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Re: LF: Experimental linear amplifier testing.

To: <[email protected]>
Subject: Re: LF: Experimental linear amplifier testing.
From: "Chris" <[email protected]>
Date: Fri, 17 Oct 2014 14:16:19 +0100
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Hi Hugh, M0DSZ, can you confirm you are still TXing? I was getting a signal on 'your' frequency until about ten minutes ago, but only switched on shortly before that and it's now disappeared.
Chris, G4AYT, Whitstable, Kent, JO01MI.
----- Original Message ----- From: "LineOne" <[email protected]>
To: <[email protected]>
Sent: Friday, October 17, 2014 11:10 AM
Subject: Re: LF: Experimental linear amplifier testing.


Yes Mike, very likely. I'm starting up in a few minutes, having had the "synthesiser" on for an hour. I have a 1:18 turns ratio output transformer on a pair of dust toroids and it looks as though I need to rewind it to increase this. Calibration is from a Racal-Dana frequency counter which is within 0.2Hz at 198kHz but my signals seem to appear at different frequencies according to individual grabbers.

Hugh M0DSZ, IO82LS.

On 16/10/2014 20:49, Mike Dennison wrote:
Hugh, I am seeing a weak signal that started around 2040UTC 1Hz lower
than you said, drifting LF over the next hour by about 0.7Hz. Too
weak to read anything. Could that be you? I will continue monitoring.

Mike, G3XDV
IO91VT
===========

This is to confirm that I am running some tests on 136.173kHz, QRSS60,
latterly 150W dc input to a linear amplifier, mainly to determine
aerial tuning and loading. I was too close to 136.172 earlier so moved
away. I see that there is a frequency drift after switch on so I'll
start the synthesiser 30 minutes earlier. It is unlikely that the
transmission will reach very far at present.

73, Hugh, M0DSZ



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