Today's Message Index:
----------------------
1. 04:19 AM - Re: looking for documentation (Rob Ray)
2. 04:27 AM - Re: TRANSPONDER ANTENNAS (Rob Ray)
3. 04:58 AM - Re: TRANSPONDER ANTENNAS (Jerry Grimmonpre)
4. 04:58 AM - Garmin Breaker Requirements (Derrick Aubuchon)
5. 05:19 AM - Re: TRANSPONDER ANTENNAS (Rob Ray)
Message 1
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| Subject: | Re: looking for documentation |
Pete,
www.vansaircraft.com
RR
Pete Cosky <pcosky@comcast.net> wrote: I hope I am looking in
the right place. I recently bought a set of RV-4 plans but they are only the plan
sheets, and if memory serves me correctly there should be an assembly manual.
I am correct and where can I find such an animal?
Pete
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Message 2
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| Subject: | Re: TRANSPONDER ANTENNAS |
Wally,
I have flown a bunch of RV4's and most had their transponder antenna on the belly,
about 24" aft of the firewall. I had mine in the same position for the first
1000 hours. Since then I have experimented with several places on my RV4
including where you mention. They all worked fine except for under my cowling
which was reported "weak".
My goal was to put ALL my antennas hidden inside the airframe behind fiberglass.
To do this I installed my comm antenna in the left gear leg fairing, transponder
in the wingtip and ELT inside the cockpit. They all work well...
Rob Ray
RV4WGH@aol.com wrote: I am in the process of locating mounting two transponder
antennas. One for my GTX-327 and one for an ATD-200 traffic detector.
I plan for my comm antenna to be mounted about 10 inches behind the firewall
and mid point side to sideHas anyone mounted their transponder antenna on the
"floor" piece that extends beyond the fuselage sides for attachment to the lower
wing skin? I can meet the 3 foot separatation to the transponder antennas
and the two foot separation between them by mounting one on each side. Alternative
would be to mount all in tandem with required separation but his would
require a longer cable run.
Thanks for any suggestions or comments.
Regards,
Wally Hunt
RV-4 Finishing Kit
Rockford, IL
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Message 3
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| Subject: | Re: TRANSPONDER ANTENNAS |
Hi Rob ...
Can you please expand on the comm antenna in the left gear leg? It
obviously had to be a straight whip. How did you fasten it to the
structure of the leg, how did you ground the antenna mount? How close
to the fuselage was the base of the antenna? How long was the antenna?
How did you prevent the whip part of the ant from touching the gear leg
and grounding out. Is the comm antenna still inside the fairing and
working good? This really blows holes in the idea that comm antennas
need a flat ground plane. Sorry for so many questions.
Thanks for your answers ...
Jerry
RV4
Huntley IL
----- Original Message -----
From: Rob Ray
To: rv4-list@matronics.com
Sent: Monday, February 26, 2007 6:27 AM
Subject: Re: RV4-List: TRANSPONDER ANTENNAS
Wally,
I have flown a bunch of RV4's and most had their transponder antenna
on the belly, about 24" aft of the firewall. I had mine in the same
position for the first 1000 hours. Since then I have experimented with
several places on my RV4 including where you mention. They all worked
fine except for under my cowling which was reported "weak".
My goal was to put ALL my antennas hidden inside the airframe behind
fiberglass. To do this I installed my comm antenna in the left gear leg
fairing, transponder in the wingtip and ELT inside the cockpit. They
all work well...
Rob Ray
Message 4
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| Subject: | Garmin Breaker Requirements |
Greetings listers,,
I am trying to plan ahead with my panel design for my RV9A project.
Can anyone tell me the circuit breaker requirements (ie; current
load) for the following:
- SL30 NAV/COM
- GTX327 Transponder
- GPS496 (I plan to panel mount the 496)
Thanks in advance!
Derrick Aubuchon
RV-4: N184DA
Jackson/Westover -Amador County (O70)
daubuchon@volcano.net
Message 5
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| Subject: | Re: TRANSPONDER ANTENNAS |
OK Jerry, one question at a time. First, I used one of the the copper tape "canopy
antennas" in Vans catalog and glued it into the fiberglass leg fairing. I
attached the connector at the top with a BNC and ran the wire into the cockpit
with my brake line.
My thinking was that it had no ground plane taped into the canopy so why should
it need one there? I had a whip antenna connected to the wing fairing on my
Tcraft for years and it worked great with a handheld. The leg antenna works good.
One improvement might be to use a fiberglass straight antenna inside the
fairing with the base removed. The cost of the copper antenna was so cheap that
I couldn't resist.
Since the letters EXPERIMENTAL are on the side of my airplane, I like to excercise
it...good luck!
RR
Jerry Grimmonpre <jerry@mc.net> wrote: Hi Rob ...
Can you please expand on the comm antenna in the left gear leg? It obviously
had to be a straight whip. How did you fasten it to the structure of the leg,
how did you ground the antenna mount? How close to the fuselage was the base
of the antenna? How long was the antenna? How did you prevent the whip
part of the ant from touching the gear leg and grounding out. Is the comm antenna
still inside the fairing and working good? This really blows holes in
the idea that comm antennas need a flat ground plane. Sorry for so many questions.
Thanks for your answers ...
Jerry
RV4
Huntley IL
----- Original Message -----
From: Rob Ray
To: rv4-list@matronics.com
Sent: Monday, February 26, 2007 6:27 AM
Subject: Re: RV4-List: TRANSPONDER ANTENNAS
Wally,
I have flown a bunch of RV4's and most had their transponder antenna on the
belly, about 24" aft of the firewall. I had mine in the same position for
the first 1000 hours. Since then I have experimented with several places on
my RV4 including where you mention. They all worked fine except for under
my cowling which was reported "weak".
My goal was to put ALL my antennas hidden inside the airframe behind fiberglass.
To do this I installed my comm antenna in the left gear leg fairing,
transponder in the wingtip and ELT inside the cockpit. They all work well...
Rob Ray
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