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LF: Re: Testing upgraded 500KHz system -- reports tks

To: <[email protected]>
Subject: LF: Re: Testing upgraded 500KHz system -- reports tks
From: "Markus Vester" <[email protected]>
Date: Thu, 10 Apr 2008 22:52:55 +0200
In-reply-to: <[email protected]>
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Reply-to: [email protected]
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Hi Mark,
yes, you are producing a nice signal into Nuernberg. What seems a little odd is that both Nicolas and Roman show it on 502.200 kHz, whereas my reading would be more like 502.225. Give or take a pixel on the ruler, but my cal shouldn't be that far off...
Reading about wind, moisture and antenna voltage effects sounds very familiar - my 200 pF on 137 k is definitely a fair-weather-only type ;-)
Best wishes
Markus, DF6NM
----- Original Message -----
From: "Mark" <[email protected]>
Sent: Thursday, April 10, 2008 9:34 AM
Subject: Re: LF: Testing upgraded 500KHz system -- reports tks

> Roman, Nicolas
> Thanks for the reports guys    Sure was weak Roman, hope stronger on the
> other antenna, but does look like it may have been me.
> a little more work to interface the PC, then I can have the system in beacon
> mode more easily.
> 10dB more power sure does get things warmer. I have killed several FETS, had
> mica caps sweating wax, toroids getting so hot you can smell them and
> insulators on the antenna complaining. The plus side is that I can now
> strike a flourescent tube by putting it within a few cm of the antenna, and
> it keeps going like a light sabre a little away from the antenna.  Oh and
> the signal seems to get a bit further :<)
> All good fun
> Regards
> Mark GM4ISM IO85AR

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