[SOC] Antenna matching

[Chris Redding]

----- Original Message ----- 
From: "Paul Bartlett" <paul at fulking.freeserve.co.uk>
To: "Second Class Operators' Club" <soc at mailman.qth.net>; "E-Q&A"
<Electronics-qa at vk2tips.com>; <elecraft at mailman.qth.net>
Sent: Sunday, September 26, 2004 3:53 PM
Subject: [SOC] Antenna matching


>
> My guess at the moment is that what I need to do is to connect the 50 ohm
> output of theK2 into the ATU, take the ATU outputs and feed into a balun
to
> drive the coax feed and then have a further balun at the base of the G5RV
to
> match to the antenna.


Nope,

As you say...50 Ohm co-ax from the K2 to the ATU, then twin feeder all the
way from the ATU to the top of the mast where the dipole divides.

This then makes it a balanced doublet, which should then tune up on just
about any frequency, not just the G5RVs harmonically-related 'slots'.

Using a balanced ATU will also filter out a lot of local electrical noise.

Try to have good insulation where the twin goes through the wall/window etc
to the outside world.

Good Luck with the ant and the CW

Chris G4PDJ


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