speedy11
Joined: 29 Jun 2015
Posts: 62
Location: Port Orange, FL
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 Posted: Sun Jul 23, 2017 9:14 am Post subject: AeroElectric-List Digest: 3 Msgs - 07/22/17 |
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Thanks to all for your advice.
I will install without and add later if needed.
Thank you,
Stan
Do not archive
| Quote: |
Time: 12:44:12 PM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
Subject: Re: 1.57542 GHz Filter
At 01:10 PM 7/22/2017, you wrote:
>In the Garmin installation manual, it says the following:
>
>"The GPS antenna is lass susceptible to harmonic interference if a
>1.57542 GHz filter is installed on the COM transceiver antenna output."
>
>Does anyone know of anyone who had to do this?
>
>Getting ready to install a GTN650 in my RV-8 so trying to anticipate
>potential problems.
>
>Thanks,
>
>Stan Sutterfield
These were found useful on some makes of comm transceivers that
had unhappy amounts of harmonic radiation on or near
GPS frequencies. I don't now recall the brands/models of
radio involved but as I do recall, it was just a select
few.
Try it without the filter. It's easy to add later if
indeed you do need it. It's simply inserted into
the transceiver coax feedline
4-70-54-Inline-Gps-Notch-Filter-Bnc
I doubt you will find it necessary.
Bob . . .
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