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[aprssig] Has anyone else seen this?

Dave Baxter dave at emv.co.uk
Fri Feb 1 12:17:03 UTC 2008


But what radio are you using to check the 710's beacons with?

It's *that* radio (not the 710) that may have a battery save feature
enabled, that shuts down most of the RX, so it will appear that the
senders first beacon is truncated.

Disable that if you can, or run with the squelch wide open so there is
no doubt.

You won't need a TNC to tell if there is a TXDelay problem on the 710 in
that case.   You'll hear the difference between first and subsiquent
packets.

Dave G0WBX.


> -----Original Message-----
> From: Rory Burke [mailto:rory at burke.ac] 
> Sent: Wednesday, January 30, 2008 6:51 PM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] Has anyone else seen this?
> 
> It's not a problem of the D710 not decoding - it's a problem 
> of the FIRST beacon sent manually  FROM the D710 not being 
> decoded by other stations. The second and subsequent manual 
> beacons are decoded every time.  I have not yet been able to 
> determine how long I must wait before the cycle repeats, but 
> some quick tests this morning indicate that it's not very long.
> 
> 73 - Rory
> K5MBH
> 
> On Jan 30, 2008, at 12:10 PM, John Habbinga wrote:
> 
> > This doesn't sound like a transmitting problem.  It sounds 
> like the  
> > receiver has a battery save feature enabled.  Turn off the battery  
> > save feature and it should decode the first time, everytime.
> >
> >> When I press the Beacon button the beacon is sent 
> immediately with  
> >> no TXD, and the beacon is not able to be decoded (I 
> suspect because  
> >> it is being truncated). If I immediately press the button 
> again the  
> >> beacon  is sent a second time with the proper TXD. I can 
> press the  
> >> Beacon  button as many times as I like and the proper TXD is  
> >> imposed. If I  stop pressing the Beacon button and wait 
> for several  
> >> minutes, then  press it again the problem repeats itself. It is  
> >> only the first beacon  after a period of inactivity that is  
> >> truncated.
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