[OZAPRS] HF for APRS
Dave Horsfall
dave at horsfall.org
Thu Nov 20 12:37:15 EST 2003
On Thu, 20 Nov 2003, Andrew Rich (VK4TEC) wrote:
> channels ? what do u mean ?
I'll assume you have no HF experience.
In the VHF world, you step along at 25KHz spacing (eg), and contacts are
made on these discrete channels.
In the HF world, it's a continuum; you cruise around at 100Hz (or less)
looking for something, and using the clarifier because typically you and
he aren't Txing/Rxing on precisely the same frequencies.
So you say, for example, "see you on 3.625 +/- QRM".
Well, this concept also applies to the FT-100's VHF front-ends; as I
said, it's an HF rig with VHF bolted on.
It's fine for SSB/CW, but a poor choice for FM (I use it as a back-up
to my dedicated FM rigs when out in the field).
-- Dave
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