Date   

Red Cross Communications Team Weekly Net - Tue, 11/17/2020 8:00pm-8:30pm #cal-reminder

main@ARC2-SDICC.groups.io Calendar <main@...>
 

Reminder: Red Cross Communications Team Weekly Net

When: Tuesday, 17 November 2020, 8:00pm to 8:30pm, (GMT-08:00) America/Los Angeles

Where:RACES/ACS Repeater; 147.195 MHz, "+" offset, PL 114.8

View Event

Description: Net Control - KI6GRO
North Check-Ins - KG6RGI
South Check-Ins - KJ6MVB

This is a voted repeater system. Please allow approximately 1 second between pushing the PTT button on you mic and talking to allow the system to work its magic. Repeater times out after 2 minutes. If this repeater is unavailable please migrate to the PARC 130 machine (147.130 MHz, "+" offset, PL 107.2).


Red Cross Communications Team Weekly Net - Tue, 11/17/2020 8:00pm-8:30pm #cal-reminder

main@ARC2-SDICC.groups.io Calendar <main@...>
 

Reminder: Red Cross Communications Team Weekly Net

When: Tuesday, 17 November 2020, 8:00pm to 8:30pm, (GMT-08:00) America/Los Angeles

Where:RACES/ACS Repeater; 147.195 MHz, "+" offset, PL 114.8

View Event

Description: Net Control - KI6GRO
North Check-Ins - KG6RGI
South Check-Ins - KJ6MVB

This is a voted repeater system. Please allow approximately 1 second between pushing the PTT button on you mic and talking to allow the system to work its magic. Repeater times out after 2 minutes. If this repeater is unavailable please migrate to the PARC 130 machine (147.130 MHz, "+" offset, PL 107.2).


Re: Saturday Nov 14th Drill

Bob Birch
 

Thanks for the update Patrick.

Bob

-------- Original message --------
From: Patrick <P_J_H@...>
Date: 11/14/20 3:21 PM (GMT-08:00)
To: main@ARC2-SDICC.groups.io
Subject: Re: [ARC2-SDICC] Saturday Nov 14th Drill

Mae and I sent an ARC213 today.
Patrick


From: main@ARC2-SDICC.groups.io <main@ARC2-SDICC.groups.io> on behalf of Bob Birch <rrbirch@...>
Sent: Friday, November 13, 2020 15:02
To: main@ARC2-SDICC.groups.io <main@ARC2-SDICC.groups.io>
Subject: Re: [ARC2-SDICC] Saturday Nov 14th Drill
 
Thanks Gary.

Yes total participants will be 10.

The number of Winlink will probably stay the same as I went down the weekly net checkins and totalled those who had a W code.

Bob

-------- Original message --------
From: Gary Kent <gary.kent@...>
Date: 11/13/20 2:55 PM (GMT-08:00)
To: main@ARC2-SDICC.groups.io
Subject: Re: [ARC2-SDICC] Saturday Nov 14th Drill

I will participate (schedule permitting – many honey dos on the list)

Guess you will need to update the number of participants to 10.  I am Winlink capable from home so that may affect the “number of Winlink capable” by 1.

 

Gary Kent

W6GDK

 

From: main@ARC2-SDICC.groups.io [mailto:main@ARC2-SDICC.groups.io] On Behalf Of Bob Birch
Sent: Friday, November 13, 2020 2:10 PM
To: main@ARC2-SDICC.groups.io
Subject: [ARC2-SDICC] Saturday Nov 14th Drill

 

Resending this message with update information for the drill.

 

Four additional people have responded about participating in the drill.

 

I have added

Marty Offenhauer

Georgia Smith

Greg Hidley

Bruce Haupt

 

With these additions the numbers below have changed for when you send you form.

 

Bob

 

 

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

9

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

 

Bob


Re: Saturday Nov 14th Drill

Patrick
 

Mae and I sent an ARC213 today.
Patrick


From: main@ARC2-SDICC.groups.io <main@ARC2-SDICC.groups.io> on behalf of Bob Birch <rrbirch@...>
Sent: Friday, November 13, 2020 15:02
To: main@ARC2-SDICC.groups.io <main@ARC2-SDICC.groups.io>
Subject: Re: [ARC2-SDICC] Saturday Nov 14th Drill
 
Thanks Gary.

Yes total participants will be 10.

The number of Winlink will probably stay the same as I went down the weekly net checkins and totalled those who had a W code.

Bob

-------- Original message --------
From: Gary Kent <gary.kent@...>
Date: 11/13/20 2:55 PM (GMT-08:00)
To: main@ARC2-SDICC.groups.io
Subject: Re: [ARC2-SDICC] Saturday Nov 14th Drill

I will participate (schedule permitting – many honey dos on the list)

Guess you will need to update the number of participants to 10.  I am Winlink capable from home so that may affect the “number of Winlink capable” by 1.

 

Gary Kent

W6GDK

 

From: main@ARC2-SDICC.groups.io [mailto:main@ARC2-SDICC.groups.io] On Behalf Of Bob Birch
Sent: Friday, November 13, 2020 2:10 PM
To: main@ARC2-SDICC.groups.io
Subject: [ARC2-SDICC] Saturday Nov 14th Drill

 

Resending this message with update information for the drill.

 

Four additional people have responded about participating in the drill.

 

I have added

Marty Offenhauer

Georgia Smith

Greg Hidley

Bruce Haupt

 

With these additions the numbers below have changed for when you send you form.

 

Bob

 

 

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

9

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

 

Bob


Re: Saturday Nov 14th Drill

Bob Birch
 

Thanks Gary.

Yes total participants will be 10.

The number of Winlink will probably stay the same as I went down the weekly net checkins and totalled those who had a W code.

Bob

-------- Original message --------
From: Gary Kent <gary.kent@...>
Date: 11/13/20 2:55 PM (GMT-08:00)
To: main@ARC2-SDICC.groups.io
Subject: Re: [ARC2-SDICC] Saturday Nov 14th Drill

I will participate (schedule permitting – many honey dos on the list)

Guess you will need to update the number of participants to 10.  I am Winlink capable from home so that may affect the “number of Winlink capable” by 1.

 

Gary Kent

W6GDK

 

From: main@ARC2-SDICC.groups.io [mailto:main@ARC2-SDICC.groups.io] On Behalf Of Bob Birch
Sent: Friday, November 13, 2020 2:10 PM
To: main@ARC2-SDICC.groups.io
Subject: [ARC2-SDICC] Saturday Nov 14th Drill

 

Resending this message with update information for the drill.

 

Four additional people have responded about participating in the drill.

 

I have added

Marty Offenhauer

Georgia Smith

Greg Hidley

Bruce Haupt

 

With these additions the numbers below have changed for when you send you form.

 

Bob

 

 

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

9

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

 

Bob


Re: Saturday Nov 14th Drill

Gary Kent
 

I will participate (schedule permitting – many honey dos on the list)

Guess you will need to update the number of participants to 10.  I am Winlink capable from home so that may affect the “number of Winlink capable” by 1.

 

Gary Kent

W6GDK

 

From: main@ARC2-SDICC.groups.io [mailto:main@ARC2-SDICC.groups.io] On Behalf Of Bob Birch
Sent: Friday, November 13, 2020 2:10 PM
To: main@ARC2-SDICC.groups.io
Subject: [ARC2-SDICC] Saturday Nov 14th Drill

 

Resending this message with update information for the drill.

 

Four additional people have responded about participating in the drill.

 

I have added

Marty Offenhauer

Georgia Smith

Greg Hidley

Bruce Haupt

 

With these additions the numbers below have changed for when you send you form.

 

Bob

 

 

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

9

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

 

Bob


Saturday Nov 14th Drill

Bob Birch
 

Resending this message with update information for the drill.

 

Four additional people have responded about participating in the drill.

 

I have added

Marty Offenhauer

Georgia Smith

Greg Hidley

Bruce Haupt

 

With these additions the numbers below have changed for when you send you form.

 

Bob

 

 

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

9

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

 

Bob


Re: Saturday Nov 14th Drill

Bruce
 

Hi Bob and DST group:

First - I stand corrected on the so called "Winlink shutdown" (I am glad to learn there IS redundancy in the system). This is twice  that I have picked up information from the SEC-ARES group that was wrong. The other was in sending pictures over Winlink during the drill! We all must learn to NOT believe every thing we - see - read - and hear! Verify it! That also goes for disaster management, when many rumors are flying about!!

Now on to Winlink use and training. Bob - KG6RGI wrote: "The idea of Winlink is to get it directly to the intended end user." That is SO TRUE!"  So just WHO is the END USER?? That will depend on the circumstances and conditions created by the disaster event. Primarily Red Cross is called in to mitigate the effects of a disaster on disaster victims. For effective and timely relief for Red Cross clients, communications is VITAL! As a DST TEAM our mission is to set up an operative and reliable communications infrastructure, of computers, printers and networks, and radio communications systems, not only in the San Diego, but in other areas Red Cross may be deployed! This takes TRAINING!  In the local geographic area, where Red Cross is setting up to serve clients, if the disaster has destroyed ALL communications infrastructure, then the END USER becomes workers and staff in all vital Red Cross ICS functions!! There is a term used in disaster management called "The Last Mile." During the Katrina disaster the "Last Mile" was more like 50 Miles, in which NO normal communications systems were left operative!! ONLY reliable Point-To-Point communications, will allow Red Cross to serve its clients with the services they need. Radio communications would need to be established at locations like: Shelters, Service centers, the CDOC, Temporary Evacuation points (TEP), Staging areas, The County EOC, to name a few. The distances are short and easily covered by VHF Winlink - VARA-FM  Peer To Peer (P2P) or repeater communications, to send and receive filled out Red Cross Forms. There have been many discussions about how to handle, and have the forms filled out. Filling these forms out by hand will NOT work and is prone to errors! The most efficient and accurate means I see, is for DST Team members to be equipped with tablet computers. If a "End User" needs to send a message form, such as an ICS213, 6409, then the DST worker would "open" that "form" up on the tablet, and have the Red Cross staff worker fill it out. Then this message with the attached form  could quickly and reliably sent on a Winlink VARA P2P connection! DO YOU NOW see the VALUE for the Red Cross DST Communications Teams to TRAIN and develop skills on VARA-FM on Winlink P2P, and repeater  station relay??!!! NOTE: there is a VARA "Broadcast - chat" function, where an announcement or status report can be received by all the P2P stations on the net frequency, that I plan to learn through TRAINING!
For disaster message traffic to and from a disaster area, going to/from National or Divisional, for mutual aid support, obviously would be handled on HF PACTOR  or  VARA 4.0. - using the same Winlink skill set learned in TRAINING!

73 Bruce   WA6DNT@...   WA6DNT@...             


On 11/12/2020 3:34 PM, Bob Birch wrote:

During the meeting I asked all who were planning to participate in the drill to send me an e-mail. Since I didn’t get one thought something had come up and you were not going to be available.

 

As for Winlink system, to my knowledge its only the website, NOT the capability to transmit winlink msg’s.

 

We will have drills in the future. Not sure how much interest is really there right now. As for P2P, not a big fan as it only ends up on the two winlink computers that transmitted the msg. The idea of Winlink is to get it directly to the intended end user. In P2P someone will have to transcribe the msg onto another format to deliver.

 

Bob



Re: Saturday Nov 14th Drill

Georgia
 

Bob – Please add me to the list of participants for Saturday’s ARC drill.  My template is all filled in and ready to send.

 

Best regards,

 

--Georgia

KI6LAV

 

From: Bob Birch
Sent: Thursday, November 12, 2020 9:47 AM
To: main@ARC2-SDICC.groups.io
Subject: [ARC2-SDICC] Saturday Nov 14th Drill

 

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

5

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

 

Bob

 


Re: Saturday Nov 14th Drill

Fred Curtis, KI6GRO
 

Bruce,

Your information is incorrect.

The only thing that will be down during the drill is the Winlink.org website, not the Winlink system.  This was confirmed by
  1. The Winlink website home page.
  2. Mike Burton, XE2/N6KZB, Winlink development team.
Emails will be unaffected and you can send them anytime in the designated time zone window.

There is redundancy in the system with 2 CMS's and one back-up CMS which happens to be here in San Diego.

Fred Curtis
KI6GRO



On Thursday, November 12, 2020, 01:13:53 PM PST, Bruce <wa6dnt@...> wrote:


Hi Bob
You have known that I am active on Winlink - so of course I will be participating in the drill.

I just sent a email to you - that the winlink system will be down for maintenance on 11-14 - for 12 hours - starting at 1200 PST!
For the National Red Cross drill -Traffic MUST be passed before 1200 PST Saturday! 
WHY is there not REDUNDANCY built into the system!? The CMS could go down during a disaster and there is NO backup??  We do not need single point failures to take down the entire winlink network!

I just wish we could of had our own local drill in addition, to learn to pass other forms like the 6409 and the shelter report form, and also to practice P2P and sending VARA thru the Palomar repeater. PLEASE we NEED this training!


On 11/12/2020 9:45 AM, Bob Birch wrote:

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

5

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

(NOTE: the winlink system will be down for maintenance for 12 hours on 11-14 starting at 1200 PST!!!)

 

Bob


Re: Saturday Nov 14th Drill

Bruce
 

Hi Bob
You have known that I am active on Winlink - so of course I will be participating in the drill.

I just sent a email to you - that the winlink system will be down for maintenance on 11-14 - for 12 hours - starting at 1200 PST!
For the National Red Cross drill -Traffic MUST be passed before 1200 PST Saturday! 
WHY is there not REDUNDANCY built into the system!? The CMS could go down during a disaster and there is NO backup??  We do not need single point failures to take down the entire winlink network!

I just wish we could of had our own local drill in addition, to learn to pass other forms like the 6409 and the shelter report form, and also to practice P2P and sending VARA thru the Palomar repeater. PLEASE we NEED this training!


On 11/12/2020 9:45 AM, Bob Birch wrote:

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

5

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

(NOTE: the winlink system will be down for maintenance for 12 hours on 11-14 starting at 1200 PST!!!)

 

Bob


Re: Saturday Nov 14th Drill

Martin Offenhauer
 

Hi Bob
I will be participating in the drill also.
Thanks 
Marty 
N6QIR 

On Thu, Nov 12, 2020, 9:47 AM Bob Birch <rrbirch@...> wrote:

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

5

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

 

Bob


Re: Saturday Nov 14th Drill

Greg Hidley
 

I will be participating as well.

greg


On Thu, Nov 12, 2020 at 9:49 AM Bob Birch <rrbirch@...> wrote:

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

5

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

 

Bob


Saturday Nov 14th Drill

Bob Birch
 

So far below are the members I received notification that they plan to participate in the drill this Saturday.

 

Chris Steinhart

Fred Curtis

Jeff Mikoleit

Steve Kurtzman

Joe Seraki

 

Attached you will find the instructions about the drill and how to complete the ARC-213 form. I know Fred KI6GRO sent these before, wanted to make sure everyone had a copy.

 

For the details about the team in the body of the message below is information you can include.

 

Team Name

Red Cross DST So. Cal Region

 

Number of Participants

5

 

Number of operators Winlink Capable (I don’t know how many are in Org, Riverside, or SB)

15

 

Remember you only need to send 1 ARC-213 to ARCPACIFIC between the hours of 6am to 6pm.

 

Bob


Red Cross Communications Team Weekly Net - Tue, 11/10/2020 8:00pm-8:30pm #cal-reminder

main@ARC2-SDICC.groups.io Calendar <main@...>
 

Reminder: Red Cross Communications Team Weekly Net

When: Tuesday, 10 November 2020, 8:00pm to 8:30pm, (GMT-08:00) America/Los Angeles

Where:RACES/ACS Repeater; 147.195 MHz, "+" offset, PL 114.8

View Event

Description: Net Control - WA6DNT
North Check-Ins - KD9LF
South Check-Ins - KJ6HOV

This is a voted repeater system. Please allow approximately 1 second between pushing the PTT button on you mic and talking to allow the system to work its magic. Repeater times out after 2 minutes. If this repeater is unavailable please migrate to the PARC 130 machine (147.130 MHz, "+" offset, PL 107.2).


Winlink No Message in InBox issue

Nat 2733E N6BRV
 

All,

   Has anyone experienced this? I was able to login to my account at https://winlink.org/user

Sent seven (7) test messages.

However, no mail received in the inbox from the Telenet connection (WinLink Express v. 1.5.32.0) nor the N6BRV@... Webmail.  Since it logged me in through the web, then my account is active?

 

Strangely, no problem sending the mail out (using WinLink Express or Winlink webmail) and received by Fred and I using the gmail or other usual email account means.  Again, not receiving in my WinLink InBox(es).

 

73' N6BRV Nat S.

 


Re: Red Cross Communications Team Weekly Net - Tue, 11/10/2020 8:00pm-8:30pm #cal-reminder

Eric Richardson
 

Email check-in for me. I will be out of comm range tomorrow evening. Thanks. Eric KM6MPE 


On Mon, Nov 9, 2020, 8:00 PM main@ARC2-SDICC.groups.io Calendar <main@arc2-sdicc.groups.io> wrote:

Reminder: Red Cross Communications Team Weekly Net

When: Tuesday, 10 November 2020, 8:00pm to 8:30pm, (GMT-08:00) America/Los Angeles

Where:RACES/ACS Repeater; 147.195 MHz, "+" offset, PL 114.8

View Event

Description: Net Control - WA6DNT
North Check-Ins - KD9LF
South Check-Ins - KJ6HOV

This is a voted repeater system. Please allow approximately 1 second between pushing the PTT button on you mic and talking to allow the system to work its magic. Repeater times out after 2 minutes. If this repeater is unavailable please migrate to the PARC 130 machine (147.130 MHz, "+" offset, PL 107.2).


Red Cross Communications Team Weekly Net - Tue, 11/10/2020 8:00pm-8:30pm #cal-reminder

main@ARC2-SDICC.groups.io Calendar <main@...>
 

Reminder: Red Cross Communications Team Weekly Net

When: Tuesday, 10 November 2020, 8:00pm to 8:30pm, (GMT-08:00) America/Los Angeles

Where:RACES/ACS Repeater; 147.195 MHz, "+" offset, PL 114.8

View Event

Description: Net Control - WA6DNT
North Check-Ins - KD9LF
South Check-Ins - KJ6HOV

This is a voted repeater system. Please allow approximately 1 second between pushing the PTT button on you mic and talking to allow the system to work its magic. Repeater times out after 2 minutes. If this repeater is unavailable please migrate to the PARC 130 machine (147.130 MHz, "+" offset, PL 107.2).


File /Weekly Nets/RCCT WEEKLY ANLG NET ROSTER 2020_11_09.pdf uploaded #file-notice

main@ARC2-SDICC.groups.io Notification <noreply@...>
 

The following files have been uploaded to the Files area of the main@ARC2-SDICC.groups.io group.

By: Jer Kostro - Red Cross

Description:
Weekly Net Roster & Assignments November/December 2020. Net Controls please use this roster until further notice.


Re: [VARA-MODEM] VARA FM Connection problem

Bob Birch
 

PDF’s seem to work fine when posting Vol Conn. Most of the Red Cross National DST files are PDF.

 

If you have problems posting reach out to me and I will try to help.

 

Bob

 

 

From: Mooneer Salem [mailto:mooneer@...]
Sent: Sunday, November 8, 2020 9:49 AM
To: Bruce <wa6dnt@...>
Cc: KI6GRO <fredcurtis@...>; John R Stephens <johnrstephens@...>; Jer Kostro <jer.kostro.AK6QJ@...>; Bob Birch <rrbirch@...>; Martin Offenhauer <N6QIRSD@...>; stevew6sjk@...; Gregory Hidley <GHidley@...>; main@arc2-sdicc.groups.io; kuggie@...
Subject: Re: [VARA-MODEM] VARA FM Connection problem

 

Hi all,

 

While the Masters Communications devices are awesome, I'd like to clarify that the newer SignaLink devices do have the necessary modifications to support VARA FM Wide per their support page (https://www.tigertronics.com/sl_suprt.htm#VARA_WIDE_/_VARA_9600_Information). However, it sounds like the deviation doesn't get all the way up to the recommended 2.5 KHz, which may be a problem for full speeds. Personally, the DRA series can easily be made a lot more rugged than the SignaLink due to the lack of external dials and thus is probably preferred for an emergency situation.

 

Thanks,

 

-Mooneer K6AQ

 

On Sat, Nov 7, 2020 at 2:21 PM Bruce <wa6dnt@...> wrote:

Hi: San Diego Red Cross DST group

(To Jerry and Bob - I would like to post this to the "Red Cross Volunteer Connection" - but not sure the best way to accomplish this - as a PDF in the DST "files section" ?) Thanks for your help in this!

In the meeting today, there was mention of a bulk purchase for Red Cross of the Signalink modem. Before any of you lock yourself into spending $200+ for that unit, here is some information, so you can make an informed decision. The Signalink due to its bandwidth of 2.7 KHz design limitations, will limit your Vara thru-put speed to around 10 Kbps.  Vara-FM-Wide requires a band width of 8 KHz!   The Masters Communications modems are designed to pass signal band widths up to 20 KHz! The best radio's to use for VARA-FM are ones that have a separate data port with a 9600 pin. The standard that is now used - is the "Mini-Din 6" cable. This will allow receive audio to be taken straight from the discriminator, and transmit audio to be sent, straight to the FM modulator, - thus bypassing the filters that limit audio bandwidth. Most of the newer radio's use this standard with the "Mini-Din 6" cable, which makes the setup "plug and play"   Also this setup leaves  the the radio microphone functional, so voice communications and VARA data can be handled with out having to unplug the mic and plug in the data cable. Also the speaker audio can be turned down during data transmissions and not effect he constant receive audio levels going into the modem from the discriminator. Most all of the newer Yaesu radio's have this data configuration, also some Icom's.  For those interested in HF - the DRA modems will outperform the Signalink when on VARA 4.0.  Beware of the FT991 - its "data port" is set up to pass AFSK RTTY only and will NOT work for VARA! I learned this from: VARA-MODEM@groups.io 

As some of you know, I use an FT7900 with a Masters Communications DRA50 for both my Base/Portable and my Mobile. I have two Signalinks and was frustrated with the slow thru-put speed of around 10-12 KHz even with a close and strong connection. From the: ("VARA-MODEM@..." ) site I learned about the speeds possible with the Masters Communications modems, and ordered two of  them. I am SO GLAD I did!  I am now getting 29+ KBps on a good path!!! Don't make the mistake like I did,  when I purchased 2 Signalink's before learning of the DRA50  !!   The DRA50 cost was $65 each, which is far cheaper than the Signalink!.    Yes - they are a kit to assemble, but the only SMT part comes soldered to the PCB. The rest of the parts are easily inserted into the clearly marked locations. The assembly takes about 1 hour. For those older, It could take 2 hours. I suggest a bulk purchase of the DRA50 be made - for the Red Cross DST members. The assembly could be done  by multiple members, that have kit building skills. The customer support for Masters Communications is excellent and there is on line documentation and video's to show the builder the way to success, and level setting. For VARA-FM  on the display - the "VU Meter" should be set at 3/4 scale. This points out another problem with the Signalink, in many cases, its transmit output level has been shown to be too low - and not enough to compensate for the radio bandwidth roll off.  Below is all the design info that went into the DRA modems, to make them so superior to other modems!   

73 Bruce  WA6DNT@...  WA6DNT@...



-------- Forwarded Message --------

Subject:

Re: [VARA-MODEM] VARA FM Connection problem

Date:

Fri, 6 Nov 2020 01:38:59 -0500

From:

Kevin Custer <kuggie@...>

Reply-To:

VARA-MODEM@groups.io

To:

VARA-MODEM@groups.io

 

Sometimes I get a request for the audio bandwidth specifications of the DRA Series radio adapters.  These specifications aren't on our website, because the DRA Series drastically exceeds the audio requirements of any mode designed for two-way radio - analog or digital.  This is mainly because the heart of the RA and DRA adapters is a C-Media chipset that was originally designed for stereo headset applications where people would be listening to high-fidelity audio, and the need to process audio from a microphone or other high-fidelity audio source.  The CM119A is superior to other chipsets, including its proposed replacement the CM119B.  While you'd think a simple letter revision doesn't mean much - in the case of this integrated circuit, it's a bigger difference than one would think - at least when the chip is used as a radio interface.

Masters Communications has been producing radio adapters (sound cards that connect to two-way radios) since 2014.  Our original RA Series was designed for AllStar Link - an analog linking and repeater controller software designed for ham radio.  The C-Media CM Series is the only chipset that would work with AllStar Link, and is why many of the higher quality radio interfaces uses one of these chips.  The CM108 was the first one, then the CM119 (no suffix), then the CM119A (the one that we currently use).  This chip is still in production, and anyone purchasing a DRA series radio adapter will see a date code that is comprised of 4 numbers stamped on the chip by the manufacturer.  These numbers are arranged like this "2009", where the "20" is for the year 2020 and the week manufactured "09" for the 9th week.  This date code relates to a manufacturing date of somewhere between February 24 and March 1 2020.

I'll address the frequency response of the RA and DRA-Series for everyone, since it was mentioned here a couple of times.

When I hear someone mention about frequency response limitations, the first place I look is at the radio.  This is especially true if the receive audio is taken from anywhere except the discriminator.  Almost every two-way radio I know of has CTCSS filtering to the speaker and most auxiliary audio connections.  This filtering is to eliminate PL buzz in the speaker.  Likewise, for the transmitter, frequencies below 300Hz are intentionally filtered in the MIC path so that any voice audio that includes fundamental frequencies in the CTCSS range doesn't "talk off" the PL decoder on the far end.  Any sub 300 Hz voice characteristic that would cause the PL tone to cancel will degrade CTCSS performance, and therefore are filtered in the transmitter.

Proper deployment of digital communications using lower and higher fundamental frequencies (than human voice) requires the connection of the radio adapter directly the the receiver discriminator absent from any such filtering or de-emphasis circuitry.  Likewise, the radio adapter needs to be connected directly the the radio's FM modulator, avoiding any limiting, filtering, and pre-emphasis.  Many people just use the MIC input and Speaker connections because it's easy, or that is all that's available.  Even the "9600" or wide-band (data port) audio connections on most radios are filtered (to some degree) to keep people from doing stuff they shouldn't and splattering over into the next channel or worst yet, out of the band.  It's these filters in the radios that limit the maximum throughputs.  Read that last sentence again....

Let's now look at the design of the RA and DRA Series adapters.  This gets pretty deep technically, and we're going to do some math, so I'll apologize for its content and length now.

The following specifications are used in these calculations:
The stated frequency response of the CM119A DAC (transmit audio path) is 20Hz to 20kHz when driven by a 48kHz sampling rate program.  This information is taken directly from the products data sheet.
Its ADC input (the receive audio path) is somewhat less at 20Hz to 19.2kHz.
The DAC output impedance is 32 ohms (in the case of the DRA-30 and DRA-36).
The LM386 output impedance is 16 ohms (in the case of the DRA-45, DRA-50, DRA-65, and DRA-70).

-------

The input impedance of the CM119A MIC input (our receiver audio path) is somewhere around 100k ohms.  In addition, there's a 100k potentiometer pot going to ground.  Worst case, the input impedance seen at the radio adapters input is around 50k ohms, because these two resistances are in parallel.  The coupling capacitors inline to the MIC input are both 4.7uF.  So worst case the series capacitance is slightly over 2uF (2.35).  When you do the math, this creates a high-pass filter at 1.35 Hertz (Yes - less than 2 cycles per second).  As such, the receive audio chain of the RA-Series adapters have a frequency response well below the 20 Hz cut-off specification of the CM119A.

The parallel capacitance on the MIC line is 47pF.  Considering the source impedance is 50k ohms or less (many radios are between 600 ohms and 10k) the worst-case high end frequency response would extend to almost 68kHz.  This is well above the 20kHz specification of the CM119A.

For DRA's without the LM386 TX audio amplification (DRA-30 and '36), each CM119A DAC output (left and right) go through a pair of 100uF coupling capacitors and a 1k potentiometer.  This provides a low frequency cut-off of about 100 Hz assuming the load is 32 ohms.  In reality, most transmitters have an audio input impedance of 600 ohms or more.  At 600 ohms, this equates to a low frequency cut-off of 5.3 Hz, well below the 20 cycle low frequency specification of the CM119A chip.  For DRA's that have the LM386 TX audio amplification (DRA-45, '50, '65, and '70) each CM119A DAC output (left and right) feed the inputs to the LM386 IC's.  Those coupling capacitors are sufficiently sized to exceed the frequency response of those IC's.  Each output of the LM386 goes through a 100uF coupling capacitor.  This provides a low frequency cut-off of about 100 Hz assuming the load is 16 ohms.  In reality, most transmitters have an audio input impedance of 600 ohms or more.  At 600 ohms, this equates to a low frequency cut-off of 5.3 Hz, again, well below the 20 cycle low frequency specification of the CM119A chip.

For all intents and purposes, the frequency response of the DRA radio adapters are no less that 100Hz to 20kHz worst case scenario, and likely to be 20Hz to 20kHz the specification of the CM119A, depending on the connected radio.

Here's a audio spectrum analyzer sweep of a CM119A with 100uF coupling capacitors being tested for maximum frequency response:
http://www.masterscommunications.com/temp/CM119A/fullbandwidth.jpg

This testing was done using a Windows based audio spectrum analyzer program called TrueRTA.  I own the 1/24 Octave license.  This testing was done at a 44.1kHz sampling rate.  It's actually a little better at 48kHz.
https://trueaudio.com/rta_abt1.htm

In terms of dynamic range - it's 16 bits (96 dB theoretical) through the chain, which is way way more than the noise-limited dynamic range of two-way radio.  Even if you write off the additional digital headroom requirements in dealing with preemphasis and deemphasis, there's still more dynamic range available than would be realized in two-way (about 40dB at best). 

In terms of noise immunity, the USB input to the CM119A can be a limiting factor where signal to noise is concerned.  We've worked very hard on the design of the circuit board to insure the USB inputs are properly routed and terminated and deliver the lowest possible noise.  The use of a high quality circuit board with a massive ground plane and rounded traces on the USB lines insure high signal to noise ratio.  47pF capacitors on all input and output lines help to insure noise immunity is high as well as providing protection against RFI.

At first, Jose was a little hung-up on the radio adapters that have the added amplification of the LM386's, IE: the DRA-45, '50, '65, and '70.  He felt it was somehow limiting the audio bandwidth or adding distortion or other artifacts which would limit the throughput.  I can guarantee you that the coupling capacitors and added amplifiers in the DRA Series aren't causing any throughput limitations.  As I said earlier, limitations are because of the connected radios and their individual bandwidth and distortion characteristics.  If you're not convinced - buy radio adapters without the added amplifiers.  But - realize certain radios require more P-P audio voltage than a naked CM119A can output.

How do I know for sure these are as good as I claim?  Here are some real world examples:

There are several guys that are using highly modified UHF GE Delta radios that were highly modified.  These radios had their I-F filters replaced with wider ones. They're using the optional FL-10 filter at 15 kHz on the transmit audio path and feeding the FM modulator directly.  The modulators were modified to provide flat frequency response from 50Hz out to nearly 8kHz.  They're using stock DRA's that have the LM386 amplification, as the TX audios injection point (after modification) requires a good bit of P-P voltage for proper deviation.  They are purportedly running a modified version of (some software package) that uses audio from 50Hz to about 8kHz on wide-band UHF channels.  They are reporting 50+ kbps throughputs, so I can assure you there are no bandwidth limitation concerns with the DRA Series.  The FL-10 filters are not needed in 99% of the deployments, so please don't think there is something to gain by adding one to your existing installation.  They are only needed when used with highly modified radios for extreme throughputs where the original filtering was removed.

Others are using the Yaesu FT-8800 and FT-8900 for gateways.  These radios perform up to their inherent filtering limitations and folks are getting in excess of 30kbps throughput, and as Bruce mentions, the FT-7900 is also an excellent radio for VARA FM.  No modifications of these radios are required for exceptional throughput rates.

In summary, the DRA Series radio adapters are not a limiting factor in exceptional throughput digital communications using two-way radios.  They will work well beyond the capabilities of the radios we're connecting these to. Remember, it's the filtering in the radios that limit the maximum throughputs.

I recently wrote an article that explains this a little differently:
http://www.masterscommunications.com/products/radio-adapter/faq/maximum-baud-rate.html

Comments and questions are welcomed.

Kevin W3KKC


On 11/5/2020 7:35 PM, Bruce wrote:

Also the Signalink audio band -pass rolls off around 2.7 KHz which limits the tru-put to around 10-15 KBps.

Vara-FM- wide needs an 8 KHz B.W.  With the Masters Communications DRA50 and my FT7900 (set to 9600)

I get 29 KBps on a good P2P path.  And YES VARA is a GREAT mode with the right equipment!

73 Bruce WA6DNT2JUNO.com   WA6DNT@...

 

 

On 11/4/2020 9:32 PM, Bradley Glen via groups.io wrote:

Vara requires a flat audio reponse for HF and FM- look on the waterfall and if there is any signs of band edge filtering like seen when taking off the speaker- not a good practice .Every radio has taylored audio designed for that radio .

1-Flat audio you will get the better data throughputs.
2-Transmit - as wide as possible and use gain control .
3-Make sure your tx and RX points do not LOAD that inout/output , use sound interfacing practises .

With these simple points above  great speeds can be seen .
My highest on HF is over 21000 bytes /min , in  ideal conditions..

When you see speeds increase and then suddenly you lose a block - reduce drive level.
You will find a sweet spot .

good luck and vara is a great mode 

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