[aprssig] APRS Skycommnd (Was RE: TH-D7 versions.)

Dave Baxter dave at uk-ar.co.uk
Mon Nov 9 04:28:56 EST 2009

The problem is Bob, that in some places (The UK for one) we have to
ensure that any RF based remote control of another tranciever we
personaly own, is purely for our own individual use.   We can't legaly
just put an open rem-con facility up (even via the 'net) for all to use,
as an individual licencee.

Simple pilot tone restrictions, or 3 digit passwords just don't cut it.
WiFi style encryption would be good, but again we are prohibited from
using any "on air encrypion" within any ham band.

With a "Notice of Variation" we can do many such things, but there are
several very significant "Hoops" to jump through first. 

OK, we don't pay for our licences now (a mixed blessing) and there are
things like the above we can now do for our own use that are legal, so
long as they are done correctly (read, "secure" from other users.)   But
for other things, like digi's etc, it's now somewhat more
complicated/restrictive than it ever was.

Take Care.

Dave G0WBX.

> -----Original Message-----
> From: Robert Bruninga [mailto:bruninga at usna.edu] 
> Sent: 06 November 2009 14:33
> To: 'TAPR APRS Mailing List'
> Subject: [aprssig] APRS Skycommnd (Was RE: TH-D7 versions.)
> > It [skycommand] is legal in Norway as long as you are not occupying 
> > the simplex frequencies.
> > .. To take over the control link you need the correct 
> subtone ... and 
> > you need to use the same callsign on AX25.
> Many people think of Skycommand as an individual's own 
> private link to his remote HF transceiver.  But there is 
> another way to implement it so that everyone in a club can 
> use it and monitor it.
> Just use a common call, common PL tone, and common freqs.  
> Then anyone in the club with an APRS/skycommand mobile or HT 
> can set SKYCOMMAND mode and either control the club radio, or 
> MONITOR what someone else is doing.
> In otherwords the display on ALL of these mobiles will 
> display the HF Controls just like it does for the one 
> controlling.  So as the controlling mobile dials around in 
> frequency, everyone else can see what they are hearing, and 
> participate in the "net".
> See www.aprs.org/skycommand.html
> And you don't even need an APRS/skycommand radio.  ANY radio 
> with PL and with a spare TNC can be used for displaying and 
> controlling skycommand.
> Bob, Wb4APR

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