[OZAPRS] HF for APRS

[Andrew Rich (VK4TEC)]

Oh I have lotsa HF experience dont get me wrong.

I was just conjused about your use of the word channel.


----- Original Message ----- 
From: "Dave Horsfall" <dave at horsfall.org>
To: <ozaprs at marconi.ics.mq.edu.au>
Sent: Thursday, November 20, 2003 11:37 AM
Subject: Re: [OZAPRS] HF for APRS


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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