I looked at a VHF PD-200 in my garage that I had apart a few years ago, the tip has a small allen screw in it. I think I loosened this screw to get the guts out of the radome. My PD-200 is noisy, this is usually caused by joints that have become intermittant. I was never able to find the bad joint, my next plan was to pass voltage thru the antenna using a car headlight or something else as a current limiter. I was then going to take voltage readings across the joints and see if I can find the bad joint. You could use the same technique to find the open.
If the radome is weathered badly, I wonder if it is worth fixing. There has been various methods to reseal the fiberglass mentioned. While you have the antenna apart, make sure that you check all the joints. The PD-200 has a history of noise problems as stated above.
73, Joe, K1ike
Tony Faiola <[EMAIL PROTECTED]> wrote:
Tony Faiola <[EMAIL PROTECTED]> wrote:
Subject: Antenna Repair Fiberglass Collinear Antenna
We were given a 5.8 db Gain Stationmaster for the 220 band, and it seems
to be very sick.
There is no DC continuity directly across the UHF connector, and the
VSWR is horrible!
We are in the process of taking this antenna apart, however there are
some of you on this site have been there and done that. This subject
has been covered a while back, but I can't seem to find any reference in
the index. If I recall, there are three screws holding the base, but
the antenna fiber glass sheath will not pull out, only if a torch heats
the solder at the antenna tip.
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