[aprssig] unusual Terrestrial APRS propagation

Ev Tupis w2ev at yahoo.com
Mon Aug 31 18:08:17 CDT 2015


You didn't hear any DX, therefore the band is not open?  lol.
That's a common error-in-reasoning.  It is why the 10 meter PropNET project (APRS on PSK31) involves stations that both auto-ID 24x7 but also have robots that can be interrogated...in case the band is open but there are no human operators awake at the time...except you of course.

I gotta go...I hear a VE3 working into the Dakotas on 2 meters and I'm hoping that the big-red-blob makes its way just a little farther East.
L8r.
Ev, W2EV 
     From: "pfbram at comcast.net" <pfbram at comcast.net>
 To: Ev Tupis <w2ev at yahoo.com>; TAPR APRS Mailing List <aprssig at tapr.org> 
Cc: Nagi Punyamurthula <n0agi at n0agi.com> 
 Sent: Monday, August 31, 2015 5:34 PM
 Subject: Re: [aprssig] unusual Terrestrial APRS propagation
   
I heard alot of APRS stations from Kansas and elsewhere from my QTH also (same metro area as Nagi, but different corner of it).

I suspect it was just IS->RF traffic.  Elated at first, but then I conducted a test -- I shut down my igate and twiddled the tunner across 2m, generally speaking..  Also set it up to scan.  Didn't hear any distant 2m VHF FM voice conversations.  If it was a 2m propagation anomaly, I would have expected distant phone conversations.

73, KD0KZE / Paul

From: "Ev Tupis via aprssig" <aprssig at tapr.org>
To: "Nagi Punyamurthula" <n0agi at n0agi.com>, "TAPR APRS Mailing List" <aprssig at tapr.org>, "TAPR APRS Mailing List" <aprssig at tapr.org>
Sent: Monday, August 31, 2015 2:49:43 PM
Subject: Re: [aprssig] unusual Terrestrial APRS propagation



Tropospheric inversion layer.  Big time.
There are 1000km QSO's taking place on 144, 222 and 432 MHz since yesterday.
Ev, W2Ev


 From: Nagi Punyamurthula via aprssig <aprssig at tapr.org>
 To: TAPR APRS Mailing List <aprssig at tapr.org> 
 Sent: Monday, August 31, 2015 7:39 AM
 Subject: [aprssig] unusual Terrestrial APRS propagation
 
I have been monitoring the  VHF APRS propagation map the last few days and have been noticing an unusually long range propagation.  Very rarely does my APRS sysop station hear others beyond the MN, IA, SD, ND, KS, WI, IL states – even w/ some previously experienced solar flares/storms.  Anyone has any hints on what might be causing this out of norm propagation.  
I was monitoring http://SolarHam.com/ for some info and found this from 2 days ago.
  Thanks 73, N0AGI-Nagi
http://N0AGI.com/
    
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