[OZAPRS] Unknown Data transmission

[Robert Thirkettle]

Hi All
	It's probably an APRS beacon from somebody. Have you tried
tuning a small amount each side to see if you can decode it? The problem
is that TX only needs to be 50Hz off frequency and you will not decode
the packet. 

Remember with SSB the exact tone frequencies are a product of your
receiver and where your VFO is set. The filters in the TNC are quite
narrow so you can't stand the 2 received tones being too fare off
frequency for the particular TNC being used.

Regards Rob Thirkettle ZL3RX          
Dept  Physics & Astronomy
University of Canterbury     
Private Bag 4800,         
Christchurch 8020,
New Zealand
Tel: +64 3 364 2510
Fax: +64 3 364 2469
mailto:rob.thirkettle at canterbury.ac.nz


-----Original Message-----
From: ozaprs-bounces at marconi.ics.mq.edu.au
[mailto:ozaprs-bounces at marconi.ics.mq.edu.au] On Behalf Of Norm McMillan
Sent: Tuesday, 16 November 2004 12:33 p.m.
To: OZAPRS
Subject: [OZAPRS] Unknown Data transmission

G'day all,

I'm hearing a data transmission of some sort just below the 40m APRS 
transmission. APRS is 7.036.3 lsb on my FT107-M, the unknown signal is 
at 7.036.0. The shift is apparently 200Hz.

I've tried every mode on "multipsk" and cant resolve it.

I can't remember if this list takes attachments, but I have a picture of

it from "Multipsk".
Anyone got a clue?
-- 
Norm, VK2XCI,
Voice of The Edge of The Outback.
QF27wd
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