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[aprssig] New experimental GMSK version of APRS Messenger

Chris Moulding chrism at crosscountrywireless.net
Tue Aug 17 08:56:28 UTC 2010


>
> Maybe it's time for a 40 meter APRS-PSK channel.   We could use the
> stock PSK-40 and pick one small frequency range to use that's
> available with the existing 7.070 crystal.  That should work well for
> a regional setup.   After all these years we'd finally have an off the
> shelf reasonably priced radio for HF-APRS.
>    
There already is a 40m frequency in use for APRS over PSK/GMSK. In 
Australia VK2IO-63 is Igating on 7034.7 kHz.

It might be worth using this frequency worldwide?

73,

Chris, G4HYG

--
Chris Moulding
Cross Country Wireless
7 Thirlmere Grove, Bolton, Lancs, BL4 0QB, UK
Tel/fax: +44(0)1204 410626
Mobile:  +44(0)7752 391908
Website: http://www.crosscountrywireless.net



On 17/08/10 02:44, Bill V WA7NWP wrote:
>>> I wonder if the Smallwonder PSK rigs would work for APRS Messenger.
>>>
>>>    http://smallwonderlabs.com/psk31_new.htm
>>>
>>> We might have to tweak the expected frequency usage a bit but it would
>>> give a nice simple rig to use.
>>>
>>> 73
>>> Bill - WA7NWP
>>>        
>    
>> Yes that would work well with the right crystal. If it was set to 10.1476
>> MHz it could be used for all HF APRS modes.
>>
>> 73,
>>
>> Chris, G4HYG
>>      
> Thanks Chris,
>
>    
>>      
> Here's another twist on using the Small Wonder PSK31 transceivers..
> Maybe it's time for a 40 meter APRS-PSK channel.   We could use the
> stock PSK-40 and pick one small frequency range to use that's
> available with the existing 7.070 crystal.  That should work well for
> a regional setup.   After all these years we'd finally have an off the
> shelf reasonably priced radio for HF-APRS.
>
>    http://smallwonderlabs.com/docs/newPSK40.pdf
>
> 73
> Bill - WA7NWP
>
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>    



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