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1. 10:44 AM - Re: In line filter (John DeCuir)
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Subject: | Re: In line filter |
I had problems like yours, and I tried notch filters in the comm ant
lead to no avail. I replaced comm and GPS coax with RG400 and eliminated
the problem.
John DeCuir
RV4
>
> Time: 07:05:22 AM PST US
> From: Dave Lammers <davelammers@mchsi.com>
> Subject: Avionics-List: In line filter
>
>
> Hi, does anyone on the list know where to purchase an in-line
(BNC/BNC)
> low-pass filter to pass 243 mhz, and reject the GPS carrier of 1.5 Ghz
> and above?
> It turns out that my comm radio causes the ring diodes in the output
of
> my ELT to resonate and retransmit at frequencies that saturate and
shut
> down the GPS reciever front end.
> I don't want to move antennas (already 4 feet apart) and think that a
> simple low pass filter in the ELT antenna line will do. I can easily
> make one but would rather just purchase one already packaged.
> Thanks
> Dave Lammers
>
>
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