[TenTec] BC RFI, and fans (was Orion cooling)

Steve Ellington N4LQ at igLou.com
Sat May 8 23:41:06 EDT 2004


Are you saying that you get this front end overload with the Orion but not
with the Omni VI? Wonder what the difference is?
Steve
N4LQ

----- Original Message ----- 
From: "Rob Atkinson, K5UJ" <k5uj at hotmail.com>
To: <tentec at contesting.com>
Cc: <k5uj at hotmail.com>
Sent: Sunday, May 09, 2004 3:29 AM
Subject: [TenTec] BC RFI, and fans (was Orion cooling)


> I've experienced the same thing here with my loop.  I'm 10 to 15 miles
away
> from three clear (in name only these days) channel 50 kw broadcast station
> transmitter sites, all omni-directional with 1/2 wave towers, on 670, 720
> and 780 KHz.  When the open wire feed transmatch isn't tuned, my rig (a
> Kenwood) gets broad garbage big time on 75 meters from the station on 780
> KHz.  With the transmatch tuned for wherever I'm at on 75 the problem goes
> away for my purposes (ragchewing).  It would still be a problem if I were
> attempting weak signal work, but in my opinion, that's why God invented 10
> to 17 meters. BTW, no probs at all on the Omni VI.  Great front end.
>
> Fans:  At a local drug store, the kind that sells all kinds of stuff in
> addition to drugs, I found the Cool Breeze fan, made by Collins
> International Co. Ltd., of Fair Lawn, NJ, item no. EB24303.  (No relation
to
> the radio company Collins.)  This is a little 3" wide fan that runs off a
> regular 115 v. ac line, with a rotary switch in the line, is quiet, runs
all
> day and comes mounted on a little stand with rubber feet so it won't walk
> around.  They were around $4 each.   I aim mine at various heat sinks when
> I'm ragchewing simplex on 2 m FM, or operating cw on HF.  SSB doesn't seem
> to heat anything up enough to need one.  Anyway, each one was about 1/4
the
> cost of a new muffin fan but you wouldn't want to try mounting one of
these
> inside something--too dangerous--strictly for separate outside cabinet
> cooling.
>
> Rob Atkinson
> K5UJ
>
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