[OZAPRS] Using Maxon Radios for RX

Craig Turner craig at craigturner.id.au
Wed Jun 21 09:16:57 EST 2006

Hi Andrew,

Ok, well, I'll play around a bit more. Which pin are you reading the data
in from?

I've never aligned a radio before, so I guess its time to learn! I've got
two of them, so I can afford to play, by the way, both seem to be the same
in terms of reception, although the APRS has gone quite in VK1 lately, I
think the local IGate may be down.


Andrew McDade
> Gday Craig,
> Yes Im currently using one on 145.175 as a digipeter. Its married up to
> KPC3+ , so makes for a very small and power efficient package. I find
> the radio seems to "nearly"  hear everything that my other shack radios
> hear. This kind of surprised me due to Garry's comments regarding RX
> sensitivity being a bit down at around -114dbm at the lower part of the
> band. Maybe your radio's RX just hasn't been aligned as well perhaps. Im
> unsure about the RX IF bandwidth suggestions. The Service manual talks
> about
> acceptance of both 12.5Khz channel spacing at 3.5Khz deviation and
> channel spacing at 7.0Khz. Maybe there are a couple of different
> ,
> or perhaps a programming option somewhere. We'll need to investigate
> a
> little further later on .
> Regards ... Andrew .. VK5EX
> ----- Original Message -----
> From: "Craig Turner" <craig at craigturner.id.au>
> To: <vk3jfk at amsat.org>; "VK / ZL APRS Users" <ozaprs at aprs.net.au>
> Sent: Tuesday, June 20, 2006 8:15 PM
> Subject: [OZAPRS] Using Maxon Radios for RX
>> Hi,
>> With all these maxon radios being bought, is anyone using them for RX
>> well as TX? I am trying to set up a TNC-X with the X-Track option in my
>> car. At the moment its set up in my lounge room, with an antenna
>> outside on the roof. I'm in an area that gets good coverage from
>> VK1RGI-1 on Mt Ginni in the ACT.
>> Anyway, my TX seems to work fine.
>> I have the input GND connected to Pin 4 on the Maxon, and the TNC-X rx
>> line connected to Pin 2 (which is labelled in the maxon service manual
>> as 'Muted Demodulation Output) I have tried also pin 9, which is
>> labelled (Data out low level filtered output), which doesn't seem to
>> work either.
>> I have limited sucess by using a HT and a TT about 10 feet away from
>> antenna, and it works, but not much further than that.
>> Anyone got any advice?
>> Regards
>> Craig
>> _______________________________________________
>> Ozaprs mailing list
>> Ozaprs at aprs.net.au
>> http://aprs.net.au/mailman/listinfo/ozaprs
>> --
>> No virus found in this incoming message.
>> Checked by AVG Free Edition.
>> Version: 7.1.394 / Virus Database: 268.9.1/369 - Release Date:
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs

Ozaprs mailing list
Ozaprs at aprs.net.au

More information about the Ozaprs mailing list