Hello John,

TKS for info.

>I had VOX delay on, and when my data stream ended, the TX stayed on for that 
>split second longer, partly covering up the response
Yes VOX is too slow. ARQ FAE seems Pactor as frames are short (but not so short 
as in Pactor) and the exchange fast. The RX/TX switching must be controlled 
directly by the PC (serial control through an interface or through the CAT 
system).
Note: however the exchange is done asynchronously and not synchronously as in 
Pactor, due to Windows which is not a real-time system (as DOS was). 

>Turned down the power so that the ARQ had to work..... but it went very well 
>even when repeating frames several times.
With few repetitions, you can go down to a S/N of about -6,5 dB, with 
repetitions perhaps -7.5 dB or a bit less. Of course, you can, in that case, 
several repetitions.

>Patrick, I am assuming that it will shut itself off after sending x number of 
>frames without a response from the other station?
Yes after 30 NAK (Not AcKnowleged), the link is considered as broken and the 
program resets automatically the "Call" or "Answer" buttons.

>took less than 30 seconds to TX your test message using the long frames.
You might be at the maximum rate in unilateral (125 wpm).

73
Patrick





  ----- Original Message ----- 
  From: John Bradley 
  To: digitalradio@yahoogroups.com 
  Cc: Patrick Lindecker 
  Sent: Wednesday, February 21, 2007 9:20 PM
  Subject: [digitalradio] 141A and ALE (multipsk)



  have been on 14109.5 with Terry, VE5TLW on and off all day , trying to get 
ARQ FAE to work....... finally had success, and it was something simple,

  I had VOX delay on, and when my data stream ended, the TX stayed on for that 
split second longer, partly covering up the response
  from the other station. when I turned it off, the ARQ FAE went like the 
proverbial jackrabbit. 

  Turned down the power so that the ARQ had to work..... but it went very well 
even when repeating frames several times.

  Patrick, I am assuming that it will shut itself off after sending x number of 
frames without a response from the other station?

  Very nicely done, Patrick, looking forward to finding some others who want to 
play with this....... took less than 30 seconds to TX your test message
  using the long frames.

  John
  VE5MU

   

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