[aprssig] Re: Solar Powered Digi's and Voice Alert.
ab9fx at aprs.pl
Tue Dec 4 23:34:02 EST 2007
I think, such solution would restrict cross band repeater to special use
only. If VA is used just to call and QSY, then we need another repeater to
make QSO. Also stations calling from VHF side could collide with packets on
UHF APRS channel.
I think, would be difficult to make tx on UHF APRS channel with PL for cross
band transmission and without PL for digipeater transmission. Otherwise
would be the same what is my neighborhood (not SP3LYR, my AB9FX), all
stations repeated by local W1 seems to work with VA. They are not, just W1
transmitter is working with 100Hz.
Just some thoughts. Great for emergency, idle for regular communication.
----- Original Message -----
From: "Robert Bruninga" <bruninga at usna.edu>
To: "'Andy AB9FX'" <ab9fx at aprs.pl>; "'TAPR APRS Mailing List'"
<aprssig at lists.tapr.org>
Sent: Tuesday, December 04, 2007 19:58
Subject: Solar Powered Digi's and Voice Alert.
>> our solar powered digi... works with 60 Watts solar
>> panel... a KPC3+, Kenwood TH-22, Ultimeter 2000,
>> and cross-band repeater.
> One way to greatly facilitate TEAM operation on APRS is to put
> up a cross band transceiver for area-wide VOICE alert. The
> input is on UHF (with PL) and the output is on the APRS channel
> with PL-100.
> This way, voice alert is extended far beyond simplex to actually
> cover your entire local area. This way, all APRS stations can
> instantly make a voice alert to ALL stations in the area, no
> matter what they are doing with their other radios.
> Of course, this is pandora's box. Over use, by one or more
> individuals could drive everyone nuts and cause them to turn off
> voice alert. But in my mind, it is a GREAT backup emergency
> alert system. If rarely used...
> Think of it as an APRS 911 system. IE, never used, but
> available for when you really need it.
> Bob, WB4APR
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