[aprssig] APRS Local Info Initiative

Dave dave at g8kbv.demon.co.uk
Sat Feb 18 11:09:35 CST 2012

There are other bandplans and differing frequency allocations world wide, 
so one (assumed) size does not fit all.

Just like Andre PE1RDW detailed.


Dave G0WBX.

On 17 Feb 2012 at 8:41, Bob Bruninga wrote:

> The Kenwoods do not autoset the UHF offset.  I never understood why. 
> Makes no sense, because if the frequency is above 445, then it has to
> be MINUS and if it is below 445, then it has to be +.  And every ham
> knows that, so no need to have to transmit it...
> SO I guess if you want the radio to QSY, then you should include it.
> Bob, WB4APR
> I was giving someone a hand with the IRLP APRS status script on
> their node and commented that the frequency wasn't entered
> correctly for users of the D72/D710/FTM350 (does the VX-8GR also
> do this?) to use the tune/QSY buttons. While trying to make
> suggestions, I noticed that the node is on a UHF frequency with a
> minus offset. Do these radios automatically handle the offset or
> should the offset direction be included in the object?
> The following pages are related, but I couldn't find a mention of
> offset / shift direction.
> http://aprs.org/localinfo.html
> http://aprs.org/hamfest.html
> http://aprs.org/info/netsked.txt
> Shift is mentioned on the following page, but not how it is
> implemented. Going by the original IRLP APRS status
> script, I believe it should be after the tone. Is this correct?
> Should it be blank or an S for simplex?
> http://aprs.org/aprstt.html
> Is it assumed that the radio will automatically use the correct
> offset? If so, will it do this when there's an oddball frequency
> e.g. on 70cm with a minus offset? Or is the operation dependant
> on the object showing the actual shift direction?
> 73 es cul - Keith VE7GDH
> --
> "I may be lost, but I know exactly where I am!"
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