if i have a question for you or anytone who can answer,, I have a racal 921with only room for one anntenna im thinking of a multiband antenna for both 40 and 80 meters which are the bands i use the most.? do you know anyone who uses a multui band antenna as opposedd to constantly changing the length of the dipole or long wire end fed,? If you do,,do you know which one works best?? Im a disabled guy and once i get the antenmna up i want ti leave it there.\I have a small but sturdy mast to attach it to,
From: Iain G. Moffat To: Racal-manpacks@... Sent: Wed, September 22, 2010 2:56:41 PM Subject: Re: [Racal-manpacks] PRC320 and dipole?
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Ben
Feeding the dipole with coax from the transmitter output BNC is the correct way to do it - the operator is expected to roll up or unroll the dipole ends for best match. There was a thread on the clansman_larkspur group a few months ago about using the ATU for a dipole (with one leg connected to case ground and one to the antenna terminal) and I seem to recall that the conclusion was that a series capacitor of a few 10s of pf and a suitably high voltage rating between the antenna terminal and that leg of the dipole helped it match.
