Today's Message Index:
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1. 11:10 AM - 1.57542 GHz Filter (speedy11@aol.com)
2. 12:44 PM - Re: 1.57542 GHz Filter (Robert L. Nuckolls, III)
3. 07:29 PM - Re: 1.57542 GHz Filter (Alec Myers)
Message 1
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| Subject: | 1.57542 GHz Filter |
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
Message 2
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| 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 . . .
Message 3
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| Subject: | Re: 1.57542 GHz Filter |
I've tried the filters and they didn't make any difference.
On Jul 22, 2017, at 14:10, speedy11@aol.com wrote:
In the Garmin installation manual, it says the following:
"The GPS antenna is lass susceptible to harmonic interference if a 1.57542 G
Hz 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 potenti
al problems.
Thanks,
Stan Sutterfield
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