Today's Message Index:
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1. 05:19 AM - Electrical Question ()
2. 09:04 AM - Need two antennas for two radios?? (Don Morrisey)
3. 04:23 PM - Re: Need two antennas for two radios?? (Charles Reiche)
4. 07:15 PM - Re: Need two antennas for two radios?? (Noel Loveys)
Message 1
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Subject: | Electrical Question |
3/12/2008
Hello Tom, You wrote:
1) "For clarification, the NC switch means that I press the button to
actually cut the power. Why would this be used on an old military
helicopter stick? What is the reason for cutting the power on a switch?"
We used to say that having helicopter time in your logbook was like having
an STD entry (Sexually Transmitted Disease -- it was called venereal
disease back then) in your health record.
So I will reluctantly admit that I did fly a helicopter (CH-46) for a year
in Viet Nam. The cyclic grip had a button on it that when pressed would
disconnect the electronic flight stability / attitude positioning system so
that one could manually reposition the stick and the helicopter's attitude
then releasing the button would reengage the electronic attitude positioning
system.
Maybe you have a control stick grip that does something similar.
2) "Again, is there any way I can wire it to work with my remote ident
operation?"
I am not the right guy to answer that question, but I am sure that by using
two of the small "ice cube" type relays that ident operation could be
accomplished. It might be a pretty awkward way of doing it though from an
electrical viewpoint.
I'll forward your question to the Matronic's aeroelectric-list and maybe one
of the electrical experts there (even the great guru Bob Nuckolls) would
take a shot at it.
'OC' Says: "The best investment we can make is the effort to gather and
understand knowledge."
PS: You can subscribe to this list here -- the daily digest is a great deal.
One email inbound each day puts you in contact with the living beating heart
of the homebuilder's electrical world.
http://www.matronics.com/Navigator/?AeroElectric-List
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----- Original Message -----
From: "Tom Gibbons" <TomisFlyingby@comcast.net>
Sent: Wednesday, March 12, 2008 12:25 AM
Subject: Electrical question
On my military surplus control stick I have 4 push buttons, 2 wired normally
opened (NO) and 2 wired normally closed (NC). I really do not have access
to these switches so I have to make due but can I use the NC switches
somehow?
I have plans for comm flip/flop, nav flip/flop, and Ident for my
transponder. I actually have a "hattie" switch in the middle for trim which
is not hooked up. The stick is installed with the ptt and intercom trigger
switches working good. All kinds of switches on this guy. Was not going to
use it but hey, it felt so comfortable, why not.
For clarification, the NC switch means that I press the button to actually
cut the power. Why would this be used on an old military helicopter stick?
What is the reason for cutting the power on a switch? Again, is there any
way I can wire it to work with my remote ident operation?
Tom
Paint this summer???
Message 2
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Subject: | Need two antennas for two radios?? |
Hello Listers,
I am at the spot in cabin construction that I need to finalize what I'm doi
ng for antennas. I have two radios (Garmin & Becker) and a PMA 4000 audio
panel all nicely wired up by Stark Avionics.
Do I need to install two antennas or one w/ a splitter?
Any recommendation on antenna. I have the cheapie homebuilder's special fr
om Spruce, but am thinking maybe I should upgrade.
Thanks. Don...www.donsbushcaddy.comDon Morrisey's Skunkworks
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Message 3
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Subject: | Re: Need two antennas for two radios?? |
Install 1 CI 121 on the upper fuselage, and a CI 122 on the bottom. Feed
them with rg142 or rg400.
----- Original Message -----
From: Don Morrisey
To: avionics-list@matronics.com
Sent: Thursday, March 13, 2008 11:58 AM
Subject: Avionics-List: Need two antennas for two radios??
Hello Listers,
I am at the spot in cabin construction that I need to finalize what
I'm doing for antennas. I have two radios (Garmin & Becker) and a PMA
4000 audio panel all nicely wired up by Stark Avionics.
Do I need to install two antennas or one w/ a splitter?
Any recommendation on antenna. I have the cheapie homebuilder's
special from Spruce, but am thinking maybe I should upgrade.
Thanks. Don...
www.donsbushcaddy.com
Don Morrisey's Skunkworks
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Message 4
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Subject: | Need two antennas for two radios?? |
The short answer is two antennas... Especially if there are two
transmitters.
Noel
From: owner-avionics-list-server@matronics.com
[mailto:owner-avionics-list-server@matronics.com] On Behalf Of Don Morrisey
Sent: Thursday, March 13, 2008 1:28 PM
Subject: Avionics-List: Need two antennas for two radios??
Hello Listers,
I am at the spot in cabin construction that I need to finalize what I'm
doing for antennas. I have two radios (Garmin & Becker) and a PMA 4000
audio panel all nicely wired up by Stark Avionics.
Do I need to install two antennas or one w/ a splitter?
Any recommendation on antenna. I have the cheapie homebuilder's special
from Spruce, but am thinking maybe I should upgrade.
Thanks. Don...
www.donsbushcaddy.com <http://www.donsbushcaddy.com/>
Don Morrisey's Skunkworks
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