Yuri I had an A4S and the traps got loaded with grass spiders. They enter
through the drain holes in the bottom
of the traps. Unfortunately you have to remove the traps and take them
apart. Clean well and when you
reassemble them glue some screen on the inside of the traps to block the
holes. If you find a questionable trap
with the grid dip method it might be easier to replace it. Good luck.
73, Joe K1JC
On Mon, Nov 10, 2014 at 5:12 PM, Yuri <ve3dz@rigexpert.net> wrote:
> I have Cushcraft A4S which I haven't been using for a while. It worked
> perfectly and was tuned to CW portion of the 20,15 and 10 m bands.
> Few days ago I noticed that SWR on 10 meters went up (to approximately
> 4:1) and antenna started to resonate well above 29.0 MHz. At the same time
> the resonant frequency moved higher on 15 m, but is still tolerable in the
> CW portion (1.6:1).
> 20 m remains unchanged.
> I took it down today and examined the traps. They all look O.K. except I
> found few small spider nests inside. Also checked them for dc which appears
> to be fine.
> It's on the step ladders about 7 feet above ground level now.
> Is there anything I can do? Anybody experienced same problem before?
> Any tip would be appreciated.
>
> Thanks.
>
> Yuri VE3DZ
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