Cushcraft confirms that the traps are supposed to have vent holes, like
the originals. I've had to modify the other traps to enlarge the holes
and cover them with screen to keep bugs out, so I'll just give the new
ones the same treatment. Voids the warranty, but that's life.
The TH7 I had up for almost 30 years never had a trap problem. (Too high
for the grass spiders, or whatever got into the A3 trap 20 feet below?)
The HyGain traps have end caps that seal much better around the inner
tubing, 3 vent holes in the trap, a small hole on the bottom of each end
cap, and a small gap on the bottom where the end cap meets the outer
case. Seems to work.
73,
Scott K9MA
On 7/18/2019 11:14, Joe Ciarcia wrote:
Original A3S traps have bleed holes at the bottom of the traps. Grass
spiders would get in and build nests. The solution was to cover the holes
with a screen material. Perhaps a drain hole in the end cap solved that
problem. In any case I think drain holes are necessary. Joe
On Thu, Jul 18, 2019, 11:12 AM <n8de@thepoint.net> wrote:
Not sure what Cushcraft/MFJ is doing with the traps now, but, some
other manufacturers in the past used sealed traps with a 'bleed hole'
at the bottom of an end cap.
73
Don
N8DE
Quoting Glenn Pritchard <gpritchard7000@gmail.com>:
Regardless of how they showed up you still must have vent holes in
the traps. I had a MA5B twenty years ago and although it had vent or
moisture holes the traps still collected water.
Put the traps on a drill press and drill small 1/8 holes in the covers.
Make sure when assembled the holes face down.
Glenn, VA7UO
Sent from my iPhone
On Jul 17, 2019, at 9:35 PM, K9MA <k9ma@sdellington.us> wrote:
I recently bought some replacement traps for my old A3S from
MFJ/Cushcraft. Unike the originals, the replacements have no vent
holes. Among other problems, the original traps tended to collect
moisture and take a long time to dry out, so I'm concerned that the
replacements might be even worse. Does anyone have any experience
with these unvented traps?
73,
Scott K9MA
--
Scott K9MA
k9ma@sdellington.us
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Scott K9MA
k9ma@sdellington.us
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