Yes, it's more than likely the traps that are causing the intermittent. The
screws holding the can and the coil wires loosen up or sometimes oxidize!
Less likely, but still a problem is that sometimes the insulation breaks
down between coil turns and they can short together.
GL and 73,
At 12:26 PM 8/3/2002 -0700, BILL STRAW wrote:
> I have a 10/15/20 rotatable dipole, actually the
>driven element from an old Cushcraft A3. It has
>worked fine for a long time, but now on 15M the SWR
>is high (3:1) until I apply power, then the SWR comes
>down to (1:1) and the signals sound fine. After a few
>seconds the signals get weak, and applying power
>reveals a high SWR again, which goes back to 1:1 with
>the power having been applied. 10 and 20 are not
>affected. Is this a trap going bad or a poor
>73, Bill WB0O
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