Today's Message Index:
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1. 05:28 AM - Two VOR/GS/LOC one antenna ()
2. 06:28 AM - Re: [ExperimentalAvionics] Two VOR/GS/LOC one antenna (Ralph E. Capen)
3. 06:30 AM - Re: Two VOR/GS/LOC one antenna (Ralph E. Capen)
4. 06:35 AM - Re: Two VOR/GS/LOC one antenna (Ralph E. Capen)
5. 07:13 AM - Re: Two VOR/GS/LOC one antenna (Kelly McMullen)
6. 07:33 AM - Re: Two VOR/GS/LOC one antenna (Ralph E. Capen)
Message 1
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| Subject: | Two VOR/GS/LOC one antenna |
10/25/2011
Hello Ralph, You wrote: "and I will probably need both VOR's to finish my
IFR training and take my checkride."
I am puzzled by your problem. Since the SL-30 has simultaneous dual VOR
capability (providing radial information from one VOR to an external CDI to
track along and cross track radial information from a different VOR on the
face of the SL-30) why would you need to use the Narco NAV122D/GPS to get
information from a third VOR?
Do you lack a separate CDI for the SL-30 to feed or are you unable to feed
the CDI of the Narco unit with the SL-30 as described here?
"The NAV 122D/GPS is the same as the NAV 122D except it will include a
resolver, thus having the additional capability of being utilized as the
required "Left/Right Indicator", in IFR approved GPS or multi-sensor systems
installations."
'OC' Baker Says: "The best investment we can make is the time and effort to
gather and understand knowledge."
PS: I think that it was grossly misleading for Narco to attach the GPS
designation to their unit because it has absolutely no GPS capability, but
only provides a CDI to be fed in case a separate GPS or other sensor is
installed in the aircraft. See here:
http://www.aircraftspruce.com/catalog/avpages/narco122Dgps.php
==========================================================
Time: 03:07:20 PM PST US
From: "Ralph E. Capen" <recapen@earthlink.net>
Subject: Avionics-List: 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: | Re: [ExperimentalAvionics] Two VOR/GS/LOC one antenna |
Jake,
Good info on the Narco antenna impedance issues - and it could be an inexpensive
solution putting in a real splitter instead of the T-connector.
Thanks,
Ralph
-----Original Message-----
>From: James Hookham <godsbman@yahoo.com>
>Sent: Oct 24, 2011 11:56 PM
>To: ExperimentalAvionics@yahoogroups.com
>Subject: Re: [ExperimentalAvionics] Two VOR/GS/LOC one antenna
>
>
>There is actually a splitter that will do all that you need done. the Narco is
very suseptible to impedance issues on the antenna... where as the Garmin is
not. But there is a CI splitter that has a dual VOR/GS/LOC output where the VOR
has all the information on it the SL30 would need. The T is more than likely
causing some issues in your reception... and there are still a few shops that
will still work on a 122D (even if self destruct sequence is activated).
>
>I've actually seen this on quite a few birds out there... the main thing is to
avoid too many splitters/T's in a line.
>
>Jake
>xpaviation.com
>
>--- On Mon, 10/24/11, Ralph E. Capen <recapen@earthlink.net> wrote:
>
>
>From: Ralph E. Capen <recapen@earthlink.net>
>Subject: [ExperimentalAvionics] Two VOR/GS/LOC one antenna
>To: avionics-list@matronics.com
>Cc: "EXP-AVIONICS" <ExperimentalAvionics@yahoogroups.com>
>Date: Monday, October 24, 2011, 4:54 PM
>
>
>
>
>
>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 3
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| Subject: | Two VOR/GS/LOC one antenna |
Greg,
Thanks - something ultra-cheap to try from a troubleshooting perspective.
Ralph
-----Original Message-----
>From: Greg Young <bigdog@bentwing.com>
>Sent: Oct 24, 2011 9:49 PM
>To: avionics-list@matronics.com
>Subject: RE: Avionics-List: 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
>To: avionics-list@matronics.com
>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
>
>
Message 4
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| Subject: | Re: Two VOR/GS/LOC one antenna |
Thanks OC!
Yes, the SL-30 can do that - I just need to read the manual - good reminder!
I do have it set up to act as a backup CDI - not as a primary head to a second
NAV radio though...makes me rethink my panel strategy....
I'll start with re-reading the SL-30 manual for the dual capability.
Ralph
-----Original Message-----
>From: bakerocb@cox.net
>Sent: Oct 25, 2011 8:24 AM
>To: avionics-list@matronics.com, recapen@earthlink.net
>Subject: Avionics-List: Two VOR/GS/LOC one antenna
>
>
>10/25/2011
>
>Hello Ralph, You wrote: "and I will probably need both VOR's to finish my
>IFR training and take my checkride."
>
>I am puzzled by your problem. Since the SL-30 has simultaneous dual VOR
>capability (providing radial information from one VOR to an external CDI to
>track along and cross track radial information from a different VOR on the
>face of the SL-30) why would you need to use the Narco NAV122D/GPS to get
>information from a third VOR?
>
>Do you lack a separate CDI for the SL-30 to feed or are you unable to feed
>the CDI of the Narco unit with the SL-30 as described here?
>
>"The NAV 122D/GPS is the same as the NAV 122D except it will include a
>resolver, thus having the additional capability of being utilized as the
>required "Left/Right Indicator", in IFR approved GPS or multi-sensor systems
>installations."
>
>'OC' Baker Says: "The best investment we can make is the time and effort to
>gather and understand knowledge."
>
>PS: I think that it was grossly misleading for Narco to attach the GPS
>designation to their unit because it has absolutely no GPS capability, but
>only provides a CDI to be fed in case a separate GPS or other sensor is
>installed in the aircraft. See here:
>
>http://www.aircraftspruce.com/catalog/avpages/narco122Dgps.php
>
>
>==========================================================
>
>
>Time: 03:07:20 PM PST US
>From: "Ralph E. Capen" <recapen@earthlink.net>
>Subject: Avionics-List: 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 5
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| Subject: | Re: Two VOR/GS/LOC one antenna |
Remember that some of us are old enough to have taken our instrument
check rides with a single nav-com and ADF(no, I'm not old enough to have
used a 4 course AN range). Need a crossing radial? Better be fast on
dialing between frequencies and identifying. The SL-30 feature of
showing you the radial from the standby VOR is really all you
need..just get familiar with activating that feature.
On 10/25/2011 6:32 AM, Ralph E. Capen wrote:
> --> Avionics-List message posted by: "Ralph E. Capen"<recapen@earthlink.net>
>
> Thanks OC!
>
> Yes, the SL-30 can do that - I just need to read the manual - good reminder!
> I do have it set up to act as a backup CDI - not as a primary head to a second
NAV radio though...makes me rethink my panel strategy....
>
> I'll start with re-reading the SL-30 manual for the dual capability.
>
> Ralph
>
>
Message 6
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| Subject: | Re: Two VOR/GS/LOC one antenna |
Thanks Kelly,
Another vote for learning the features THat I have
-----Original Message-----
>From: Kelly McMullen <kellym@aviating.com>
>Sent: Oct 25, 2011 10:10 AM
>To: avionics-list@matronics.com
>Subject: Re: Avionics-List: Two VOR/GS/LOC one antenna
>
>
>Remember that some of us are old enough to have taken our instrument
>check rides with a single nav-com and ADF(no, I'm not old enough to have
>used a 4 course AN range). Need a crossing radial? Better be fast on
>dialing between frequencies and identifying. The SL-30 feature of
>showing you the radial from the standby VOR is really all you
>need..just get familiar with activating that feature.
>
>On 10/25/2011 6:32 AM, Ralph E. Capen wrote:
>> --> Avionics-List message posted by: "Ralph E. Capen"<recapen@earthlink.net>
>>
>> Thanks OC!
>>
>> Yes, the SL-30 can do that - I just need to read the manual - good reminder!
>> I do have it set up to act as a backup CDI - not as a primary head to a second
NAV radio though...makes me rethink my panel strategy....
>>
>> I'll start with re-reading the SL-30 manual for the dual capability.
>>
>> Ralph
>>
>>
>>
>
>
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