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Re: LF: QRSS with RA9MB

To: [email protected]
Subject: Re: LF: QRSS with RA9MB
From: "James Moritz" <[email protected]>
Date: Mon, 25 Mar 2002 18:41:50 +0000
In-reply-to: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
Dear Alex, LF group,

At 18:06 25/03/2002 +0000, G3AQC wrote:
Hi Alex,
I should be very pleased to transmit, for you to attempt QRSS reception...
I can also send some QRSS sigs if you like - but first, it would be a good
idea to chose a frequency that has low noise at your QTH. Preferred
frequencies here are between 135.8 - 135.9 kHz, and 137.6 - 137.8 kHz, but
this can be changed to suit your conditions.
Also, you wrote:
...Now I have simple LC VFO as master oscillator in my TX. I think that
frequency stability is not adequate for QRSS. Is it so?

I used a VFO for QRSS transmission at one time - for 3 second dots, it is OK provided you check the frequency every few minutes. But for longer dot periods, a crystal or synthesiser is probably essential. Obviously, the RX must be stable as well.
I think you are the first and only LF station from your part of the world,
so it would certainly be good to try some tests - good luck!
Cheers, Jim Moritz
73 de M0BMU



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