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Forum Index : Wanted : Antenna tuning device

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brucedownunder2
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Joined: 14/09/2005
Location: Australia
Posts: 1548

Posted: 08:43am 09 Jun 2008

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A bit off topic ,, but I've just aquired a frg7 hf receiver ... could anybody sell me a tuning unit for the longwire antenna I'm having to install ,,,or give me a Cct ,,or send me a tuning capacitor of the old (very)style plate capicitors that were common in old type radios...?? ( you know,,the Aluminium plate disc thingo's that we all wondered what the magic was about))

will pay you all the postage and charges ,,

Bruce

Bushboy

Tinker

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Joined: 07/11/2007
Location: Australia
Posts: 1904

Posted: 10:21am 09 Jun 2008

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Bruce, this site may be of interest if you don't have any doco's for your 'new' toy:
http://www.crocuta.com/FRG7/index.html

Re the tuner, it'll be quite a job to build one that covers the entire SW band or whatever band you're interested to listen to. I do have a box full of these variable capacitors left from my amateur radio construction days but they do come in specific values for the job in hand. One must have a suitable circuit to start with.

From personal experience I see no real reason why you want to tune a *receiving* antenna, make it as long as possible and high up, coupled with a good ground connection and you should hear the world if the ionospheric conditions are favorable. I have the FRG8800 which I used to listen to amateur SW but now is used for receiving the SSB weather forecast while sailing on my boat.
Tinker (VK6AKS)

P.S. I'm off for a long sailboat cruise so won't be able to reply for a few months.

Tinker

Klaus

brucedownunder2
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Joined: 14/09/2005
Location: Australia
Posts: 1548

Posted: 09:18pm 09 Jun 2008

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Thanks Klaus,, have a fair weather trip ,,, thanks for the reply ,,learning a bit more everyday,, I'll do what you said ....

Bruce

Bushboy

petanque don
Senior Member

Joined: 02/08/2006
Location: Australia
Posts: 212

Posted: 01:11am 10 Jun 2008

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Many divisions of the Wireless Institute of Australia (WIA) have a buy and sell section.

An ex ham antenna tuner may do the job.

The modern ones are all automatic now but cost $$$$$$

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