Re: LF: G4AYT?

[M0FMT <m0fmt@yahoo.co.uk>]

Hi LF

 

Ok Mike thanks for all the info again.

 

But how do you wire up back to back diodes left-handed?? ..... {:0)
 

73 es GL petefmt

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From: Mike Dennison <mike.dennison@ntlworld.com>
To: rsgb_lf_group@blacksheep.org
Sent: Mon, 14 February, 2011 16:56:44
Subject: Re: LF: G4AYT?

> I am using a TS690s Internal preamp on. No external amp. Best results
> were with the TX tuner 600mm diam resonant transformer from a LW
> antenna up13m 35m long sloping down to about 5m (slope temporary). Up
> wire touches only at tuner OP and two through the wall thin PTFE
> washers and at the top of antenna up lead using a deep ribbed glass
> insulator 8inches long far end plastic dogbone. All comments welcome.

You may need an external pre-amp. See several books and web sites for
circuits. Your insulation should not be a problem on receive.

I forgot to mention that I get some advantage from driving Argo very
hard - well into the red zone - and via a crude limiter (back-to-back
diodes). The AF distortion introduced is counter-intuitive but it has
been found by me and others (Jim, M0BMU calls his limiter a Hendrix-
izer) to gain a dB or two in SNR with only a small increase in
background noise.

Mike, G3XDV
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