Today's Message Index:
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1. 03:07 PM - Two VOR/GS/LOC one antenna (Ralph E. Capen)
2. 06:53 PM - Re: Two VOR/GS/LOC one antenna (Greg Young)
Message 1
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| Subject: | Two VOR/GS/LOC one antenna |
Folks,
I have two VOR/GS/LOC radios
1. Apollo (now Garmin) SL-30
2. Narco NAV122D/GPS
Attached to a Comant CI-182 dual whisker antenna mounted on top ov my VS in my
RV6A.
The Narco requires a diplexer which is installed and there is aCoax T-Connectorbefore
the diplexer as the SL-30 doesn't need to be seperated.
Recently, I was doing some practice work for my IFR training - holds at an intercept
- requiring two VOR's. Consistently, the SL-30 can pick up either station
while the NAV122D is flaky with both stations - but eventually will bring me
to the intercept point.
I'm gonna guess it's not the antenna - as the SL-30 brings it in fine.
My thoughts go to three possible culprits.....the T-Connector, the diplexer, or
the radio...question is, how to tell which one?
Getting the Narco repaired will bring the "Mission Impossible" theme song in the
background - with Narco recently going under.
The diplexer is probably easily replaceable for just a few bucks as well as replacing
the T-Connector with a Comant splitter (CI-5120).
Any opinions out there? I would really rather not replace the radio if the other
items may really be the culprit......and I will probably need both VOR's to
finish my IFR training and take my checkride.
Thanks in advance!
Ralph Capen
Message 2
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| Subject: | Two VOR/GS/LOC one antenna |
You might try hooking the SL-30 to the LOC output of the diplexer. You won't have
GS but re-flying your practice holds should let you evaluate if the signal
getting to the Narco is degraded. You can use the SL-30 standby freq and obs for
the 2nd Nav. The SL-30 is a great radio and routinely locks on stations 10-20nm
(at ~100nm) before my 430W. The split for my 430W is done the same way as
yours, a diplexer and T-connector.
Greg Young
-----Original Message-----
From: owner-avionics-list-server@matronics.com [mailto:owner-avionics-list-server@matronics.com] On Behalf Of Ralph E. Capen
Sent: Monday, October 24, 2011 5:02 PM
Subject: Avionics-List: Two VOR/GS/LOC one antenna
--> <recapen@earthlink.net>
Folks,
I have two VOR/GS/LOC radios
1. Apollo (now Garmin) SL-30
2. Narco NAV122D/GPS
Attached to a Comant CI-182 dual whisker antenna mounted on top ov my VS in my
RV6A.
The Narco requires a diplexer which is installed and there is a Coax T-Connector
before the diplexer as the SL-30 doesn't need to be seperated.
Recently, I was doing some practice work for my IFR training - holds at an intercept
- requiring two VOR's. Consistently, the SL-30 can pick up either station
while the NAV122D is flaky with both stations - but eventually will bring me
to the intercept point.
I'm gonna guess it's not the antenna - as the SL-30 brings it in fine.
My thoughts go to three possible culprits.....the T-Connector, the diplexer, or
the radio...question is, how to tell which one?
Getting the Narco repaired will bring the "Mission Impossible" theme song in the
background - with Narco recently going under.
The diplexer is probably easily replaceable for just a few bucks as well as replacing
the T-Connector with a Comant splitter (CI-5120).
Any opinions out there? I would really rather not replace the radio if the other
items may really be the culprit......and I will probably need both VOR's to
finish my IFR training and take my checkride.
Thanks in advance!
Ralph Capen
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