[aprssig] APRS QSO frequency

Andy AB9FX ab9fx at aprs.pl
Sun Sep 30 13:39:33 CDT 2007

----- Original Message ----- 
From: "Bob Bruninga " <bruninga at usna.edu>
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
Sent: Sunday, September 30, 2007 10:17
Subject: Re: [aprssig] APRS QSO frequency

>> As I understand from reading your webpage, the PL100
>> tone [for voice-alert on 144.39] is not digi'd?
>> So ANYTIME I hear the packet, that means someone
>> with PL100 is within simplex range?
> Yes, that is why it is a perfect "radar proximity detector" for any other 
> APRS user in simplex range...

I think, this is perfect if digi operators are perfect. One of my neighbor 
W1 digi works with PL100, so every repeated packet comes out with the tone. 
Even when I don't use PL100, I can hear 100Hz burst when MY POS blinks on 
the display. Moreover, some mobile station driving around activated D700 as 
a WIDE1-1, WIDE2-1, WIDE2-2 digi and works with PL100. So, most of local 
packets suggest their original operators are VA active and in simplex range 
but they are not.

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