[K3CAL] new repeater info

[Eric Christensen]

During initial tests when we turned the repeater on I noticed that you could hear the digital signal on your analog radio.  In mixed mode, however, the repeater won't transmit the PL tone during a digital transmission so if you are running tone decode you shouldn't hear the data (only see the busy light).

Oh, the data doesn't have tones like 1200-baud packet.  It sounds more like 9600-baud FSK to my ear.

73,
Eric W4OTN

-------- Original message --------
From: Wa4prr <wa4prr at comcast.net> 
Date: 04/21/2014  9:25 PM  (GMT-05:00) 
To: Calvert Amateur Radio Association - K3CAL <k3cal at mailman.qth.net> 
Subject: Re: [K3CAL] new repeater info 
 
Bob, how does an analog user know when a digital QSO is going on?  ( Unless one opens the tone squelch.). Or, if you only have tone on transmit, but normal squelch on receive, do you hear data tones?  I guess we will find out during testing.  73,

Ron Byzet / WA4PRR - Sent from my iPad

On Apr 21, 2014, at 9:04 PM, Bob Sheskin <bob at n3pph.com> wrote:

That is the beauty of this system, if we turn on the digital capabilities everything that can talk on the repeater now will continue to work. Unlike Dstar, Systemfusion adds digital without losing analog FM.

— 
73,
Bob


From: WA4PRR Ron Byzet <wa4prr at comcast.net>
Reply-To: CARA <k3cal at mailman.qth.net>
Date: Monday, April 21, 2014 at 8:56 PM
To: CARA <k3cal at mailman.qth.net>
Subject: Re: [K3CAL] new repeater info

Bob, thanks for the info.  The details of the modulation scheme reminds me of reading NASA specs!  At the current prices of the FM / Digital HT and mobile radios, most of our retired guys may not be able to afford new radios.  I know I can't right now.  (Reminds me of AM vs. SSB in the really early days on VHF!) 

I think there will be interesting discussions at the meeting!   73,

Ron Byzet / WA4PRR - Sent from my iPad

On Apr 21, 2014, at 7:34 PM, Bob Sheskin <bob at n3pph.com> wrote:

During the net and on the repeater some of us have been talking about the new digital capabilities of our new repeater. The link below will shed some light on this if you are interested.
https://www.dropbox.com/s/uk1w9buddymkn73/System_Fusion.pdf

If you like to get real technical here are the specs from Yaesu about the new digital capabilities.
https://www.dropbox.com/s/9895id5r6opstgy/Yaesu%20Amateur%20Radio%20Digital%20Specifications.pdf


— 
73,
Bob

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