Today's Message Index:
----------------------
1. 04:45 AM - Re: GPS antenna. (Stewart, Michael (ISS Atlanta))
2. 05:13 AM - GNS 430W Antenna Requirements ()
3. 05:47 AM - Re: GNS 430W Antenna Requirements (BobsV35B@aol.com)
4. 05:47 AM - Re: Alternator field current (Robert L. Nuckolls, III)
5. 05:55 AM - Re: Re: Transponder noise (Robert L. Nuckolls, III)
6. 07:08 AM - Re: GNS 430W Antenna Requirements (Dave N6030X)
7. 07:08 AM - Never Again Online (Bret Smith)
8. 07:12 AM - antenna placement (Dale Fultz)
9. 07:12 AM - Re: GNS 430W Antenna Requirements (Ernest Christley)
10. 07:48 AM - Re: antenna placement (Robert L. Nuckolls, III)
11. 07:52 AM - Re: antenna placement (Bill Denton)
12. 07:54 AM - Re: GNS 430W Antenna Requirements (Bret Smith)
13. 07:57 AM - Re: Never Again Online (Walter Fellows)
14. 08:03 AM - Re: GNS 430W Antenna Requirements (BobsV35B@aol.com)
15. 08:38 AM - Re: Never Again Online (Robert L. Nuckolls, III)
16. 11:59 AM - Re: Never Again Online (Ernest Christley)
17. 12:02 PM - Garmin 430/530 and WAAS (Ron Brown)
18. 02:51 PM - Re: Never Again Online (Robert L. Nuckolls, III)
19. 03:26 PM - Re: antenna placement (Rodney Dunham)
20. 03:33 PM - "It all depends." (Rodney Dunham)
21. 03:37 PM - antenna placement (BobsV35B@aol.com)
22. 03:41 PM - Re: "It all depends." (BobsV35B@aol.com)
23. 04:30 PM - Re: "It all depends." (Terry Watson)
24. 07:48 PM - Transponder location in the panel (B Tomm)
Message 1
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Well Ill be darned.
Sure nuff was.
OK I fixed it.
You guys have good eyes. Ive looked at that a hundred times and never
caught it.
Sorry for the confusion.
Mike
Do not archive
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Bill
Denton
Sent: Thursday, March 08, 2007 1:59 PM
Subject: RE: AeroElectric-List: GPS antenna.
Mike...
In the "planning" picture at the top of the page there is a 480 between
the airspeed indicator and the transponder.
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of
Stewart, Michael (ISS Atlanta)
Sent: Thursday, March 8, 2007 12:33 PM
Subject: RE: AeroElectric-List: GPS antenna.
No 480 there.
A GRT center top in the panel.MX20 center bottom, ACS engine monitor
bottom right.
430 on the top left.
Mike
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of John
Richardson
Sent: Thursday, March 08, 2007 11:42 AM
Subject: RE: AeroElectric-List: GPS antenna.
I saw the 480 in the top picture at this link
http://www2.mstewart.net:8080/super8/panel/index.htm
I think your conclusion about Garmin's roadmap is correct. I happen to
like the 480 and would like to see it stick around. Oh well.
John
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Stewart, Michael (ISS Atlanta)
Sent: Thursday, March 08, 2007 8:13 AM
Subject: RE: AeroElectric-List: GPS antenna.
Where did you see the 480 as initial design?
I never considered it in my panel and I I can only comment on my
personal opinion as to the 480. I think it will die. It is based on
nothing but guess work looking at their portfolio and product roadmap.
Since I have the MX20, there is no need for the 480 IMHO.
Best,
Mike
Do not archive
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of John
Richardson
Sent: Thursday, March 08, 2007 10:16 AM
Subject: RE: AeroElectric-List: GPS antenna.
Mike. I looked at the link showing your panel. Very nice.
Quick question: I see your initial design was using the Garmin 480 GPS
navigator, then you changed to the 430 GPS. Do you think Garmin will
obsolete the 480 soon?
John
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Stewart, Michael (ISS Atlanta)
Sent: Thursday, March 08, 2007 3:39 AM
Subject: RE: AeroElectric-List: GPS antenna.
Yes this will work fine.
I have 5 little hockey puck antennae's on my glare shield. (3GPS and 2
XM)
2 panel GPS's, and one 295 that my wife gets in the rear. One XM wx on
the grt and one XM for radio.
Photo on the Mirrors link on this page.
http://www2.mstewart.net:8080/super8/index.htm
It makes for short wire runs, light weight, and ease of service IF you
have access panels.
If you have more than one GPS antennae, they need to be several inches
apart or you will get signal degradation between them, although they
will work.
Mike
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of B
Tomm
Sent: Wednesday, March 07, 2007 10:07 PM
Subject: AeroElectric-List: GPS antenna.
I assume a remote GPS antenna will work fine on my RV7 located on top of
the glare shield but under the windshield. Is anybody operating with
this configuration successfully (Garmin 296 or 396)? If so, which
antenna are you using.
Bevan
http://www.matronics.com/Navigator?AeroElectric-List
http://forums.matronics.com
href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.
m
atronics.com/Navigator?AeroElectric-List
href="http://forums.matronics.com">http://forums.matronics.com
Message 2
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Subject: | GNS 430W Antenna Requirements |
3/9/2007
Hello List Experts, It is fairly well documented that Garmin wants high
quality antenna cable (RGU 142 or 400) to be used for the GNS 430W and it
must be between 13 and 35 feet long.
I can understand a maximum limit. I cannot understand the physics or
electronic principles behind the minimum length requirement.
Can someone please educate me? Thanks.
OC -- The best investment we can make is the effort to gather and understand
knowledge.
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Subject: | Re: GNS 430W Antenna Requirements |
Good Morning OC,
When I asked that question, I was told they need the additional attenuation
supplied by the extra length. Seems kinda unusual to me, but the techie who
told me that is a pretty sharp tack!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
In a message dated 3/9/2007 7:15:36 A.M. Central Standard Time,
bakerocb@cox.net writes:
I can understand a maximum limit. I cannot understand the physics or
electronic principles behind the minimum length requirement.
Can someone please educate me? Thanks.
<BR><BR><BR>**************************************<BR> AOL now offers free
email to everyone. Find out more about what's free from AOL at
http://www.aol.com.
Message 4
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Subject: | Re: Alternator field current |
At 11:27 AM 3/8/2007 -0500, you wrote:
>
>Folks,
>
>I may be having a brain lockup, but trying to determine field current for
>the old 14184 type Van's alternator. I just began running my engine for
>the first time, and thought I had it wired per Z-11. I had inserted a 5a
>fuse onto the field circuit at the bus because I thought this would be
>equivalent to inserting one inline after the switch as Z-11 shows instead
>of the 22AWG fuselink. Z-11 looks like this circuit has double protection
>with the fuselink and 5a fuse on the same circuit
>.
>Well, upon first start, the 5a fuse on the buss blew, so I have two
>questions for Bob and/or other smart people on this list.
>
>1) Why the "extra" protection on the field circuit?
The wire running from the bus to the switch
and breaker is an extension of the bus. This
wire is at very low risk of being faulted and
not having protection. The protection needs
to have a response time sufficiently long
to allow the downstream breaker to do its job
if called upon . . . hence the fusible link.
>
>2) What typically would the current draw be on the field circuit for this
>35a alternator. I checked the archives and manuals, no joy...
2.5 to 4 amps depending on the design. I presume
that the alternator IS designed to run with
an external regulator? When the engine is
running and loads on the system are light, the
field current can drop below 1A.
>
>BTW, if it matters, this is the "Generic Ford" regulator as per Z-11
Did you add the ov protection too? If, except
for the (fusible link substitution) you're wired
exactly like Z-11, I'd recommend that you install
the fusible link and the put an ammeter in this
lead to see what the real static current (engine
stopped) is for he field circuit and report back
to us.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
Message 5
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Subject: | Re: Transponder noise |
At 05:33 AM 3/8/2007 -0800, you wrote:
><dustinp@direcway.com>
>
>What kind of audio panel? What are the connectors
> on the back like? Is your airplane composite or
> metal? Where is the transponder antenna mounted with
> respect to the panel?
>
> Bob . . .
>
>Bob,
>
>The audio panel is Garmin GMA 340 with 2 large D-sub connetors on the
>back. I had Approach Systems build the harness for it, as well as all the
>other avionics, and use their avionics hub to connect everything together.
>
>The plane is a highwing GlaStar, which has chrome molly passenger cage
>surrounded by a fiberglass fuselage, and vertical stabilizer. It has
>aluminum wings, rudder, and horizontal stabilizer.
>
>
>I built a composite battery shelf that spans the fuselage sides behind the
>bulkhead that seperates the baggage compartment from the empanage. In
>addition to the battery on one end, the ELT is located on the other end,
>and the transponder antenna inbetween, with the ground plane mounted on
>top of the shelf, and the element hanging underneath. This places the
>antenna about 8 feet behind the panel.
But it also places the panel and all stuff in the cockpit right in the
antenna's major radiation pattern. I've never been too happy with the
notion of internal transponder antennas. Sticking them out the bottom
of the fuselage offers an opportunity to reduce radiation to the
ship's other systems by a factor of 100 or more.
>I thought the foil tape marker beacon antenna glassed to the belly of the
>empanage may be picking up the transponder broadcast since it is hooked
>directly to the audio panel. So this morning I went out and diconnected
>the marker beacon coax from its lead on the audio panel harness, while I
>listened to my headset. However there was no change in the ticking when I
>diconnected the coax.
>I did notice a significant change in the volume of the ticking when my
>physical position changed as I moved around the plane to make the
>disconnection.
Yup. Your antenna location is filling the cockpit with
RF stresses . . . moving around within the cockpit will
"stir" the pattern of maximum stress.
> I also noted that when I turned off the ANR on my LightSpeed headset,
> the ticking was no longer audible, but I really don't want to fly without
> the ANR since it makes radio transmissions so much easier to hear.
>It does seem like there is something in the headset or ANR circuitry that
>is picking up the transponder transmission. Has anyone else experienced
>this? and if so did you find a fix??
Is the ANR headset specifically for aircraft? It
may or may not be designed to live in the aircraft
radio noise environment. In any case, try moving the
antenna to the belly and put either a tuned (radius
equal to antenna mounted height) or a would-like-
to-be-infinite (as generous as practical) ground
plane over the antenna's mounting location. In this
case, an 'oversized' ground plane goes to the task
of minimizing radiation in the direction of the cabin.
Bob . . .
Message 6
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Subject: | Re: GNS 430W Antenna Requirements |
I would be curious to hear the official answer for this, too, because
I've worked with antennas since 1971 and tracked amateur satellites
for many years, and I couldn't figure out initially why they would
have a minimum length. If anything, common sense would dictate they
should want it as short as possible to have as LITTLE attenuation as
possible when trying to pick up satellites that are hundreds of miles away.
But this is an amplified antenna, and the preamp is there to help
pull the satellite signal out of the noise. Once it has done that,
they need to make sure the resulting output doesn't swamp the
front-end of the GPS receiver. So they picked a length of coax that
would attenuate the signal just enough to give a clean signal at the receiver.
By using the coax as an attenuator instead of resistors inside the
receiver, if at some point during some installation it is discovered
the attenuation is too great, the installer can just slice a foot or
two off the coax and get more signal strength, and there is no need
to ship units back and forth to and from the factory to replace attenuators.
Dave Morris
(the standard Dennis Miller waivers apply)
At 07:45 AM 3/9/2007, you wrote:
>Good Morning OC,
>
>When I asked that question, I was told they need the additional
>attenuation supplied by the extra length. Seems kinda unusual to me,
>but the techie who told me that is a pretty sharp tack!
>
>Happy Skies,
>
>Old Bob
>AKA
>Bob Siegfried
>Ancient Aviator
>Stearman N3977A
>Brookeridge Air Park LL22
>Downers Grove, IL 60516
>630 985-8503
>
>In a message dated 3/9/2007 7:15:36 A.M. Central Standard Time,
>bakerocb@cox.net writes:
>I can understand a maximum limit. I cannot understand the physics or
>electronic principles behind the minimum length requirement.
>
>Can someone please educate me? Thanks.
>
>
>----------
>AOL now offers free email to everyone. Find out more about what's
>free from AOL at <http://www.aol.com?ncid=AOLAOF00020000000339>AOL.com.
>
Message 7
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Subject: | Never Again Online |
Today there was another article in "Never Again Online" that is a
reassuring read. http://www.aopa.org/pilot/never_again/2007/na0703.html
It makes me appreciate the dual alt electrical system I am installing in
my plane even more... Thanks Bob!
Bret Smith
RV-9A "Wings"
Blue Ridge, GA
www.FlightInnovations.com
Message 8
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Subject: | antenna placement |
When putting the Com and Transponder antenna on the belly of a metal plane
is there a distance that they should be apart?? Thanks Dale
Message 9
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Subject: | Re: GNS 430W Antenna Requirements |
bakerocb@cox.net wrote:
>
> 3/9/2007
>
> Hello List Experts, It is fairly well documented that Garmin wants
> high quality antenna cable (RGU 142 or 400) to be used for the GNS
> 430W and it must be between 13 and 35 feet long.
>
> I can understand a maximum limit. I cannot understand the physics or
> electronic principles behind the minimum length requirement.
>
> Can someone please educate me? Thanks.
Working in telecom, I get a lot of experience to fiberoptics. We often
have to insert an attenuator in the line when doing our tests. The
circuits were designed to power miles of optic cable, and if you use
just a few feet the power from the transmitter will 'saturate' the
reciever. This is akin to watching a TV in a dark room with the
brightness turned up WAY to high. Everything begins to blend together
in one big mush.
--
,|"|"|, Ernest Christley |
----===<{{(oQo)}}>===---- Dyke Delta Builder |
o| d |o http://ernest.isa-geek.org |
Message 10
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Subject: | Re: antenna placement |
At 10:08 AM 3/9/2007 -0500, you wrote:
>
>When putting the Com and Transponder antenna on the belly of a metal plane
>is there a distance that they should be apart?? Thanks Dale
They're not terribly antagonistic to each other. Get the
widest practical spacing but don't bust yer buns over it.
Bob . . .
>
Message 11
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Subject: | antenna placement |
Here's the latest word I received from Comant...
"Standard separation for antennas is 36 inches. This is especially true
for transmitters like VHF and Transponder. The transponder is a
continuous high power pulse. If space is an issue non transmitters may
have to violate this rule of thumb.
In other words, 36 inches in all cases - if unable to achieve this, make
sure the no antennas are within 36 inches of a transmitting antenna."
Hope this is useful...
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Dale
Fultz
Sent: Friday, March 9, 2007 9:08 AM
Subject: AeroElectric-List: antenna placement
<dfultz7@earthlink.net>
When putting the Com and Transponder antenna on the belly of a metal plane
is there a distance that they should be apart?? Thanks Dale
Message 12
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Subject: | Re: GNS 430W Antenna Requirements |
OC,
Is the minimum length cable required for both COM and NAV?
Bret Smith
RV-9A "Wings"
Blue Ridge, GA
www.FlightInnovations.com
----- Original Message -----
From: <bakerocb@cox.net>
Sent: Friday, March 09, 2007 8:12 AM
Subject: AeroElectric-List: GNS 430W Antenna Requirements
>
> 3/9/2007
>
> Hello List Experts, It is fairly well documented that Garmin wants high
> quality antenna cable (RGU 142 or 400) to be used for the GNS 430W and it
> must be between 13 and 35 feet long.
>
> I can understand a maximum limit. I cannot understand the physics or
> electronic principles behind the minimum length requirement.
>
> Can someone please educate me? Thanks.
>
> OC -- The best investment we can make is the effort to gather and
> understand knowledge.
>
>
>
Message 13
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Subject: | Re: Never Again Online |
It is a shame the pilot in the article provided no attempt whatsoever to
explain the cause of the electrical failure. Perhaps he is another pilot who
believes that planning and checklists can completely replace experience and
intimate knowledge of the airplane and its systems.
On 3/9/07, Bret Smith <smithhb@tds.net> wrote:
>
> Today there was another article in "Never Again Online" that is a
> reassuring read. http://www.aopa.org/pilot/never_again/2007/na0703.html
>
> It makes me appreciate the dual alt electrical system I am installing in
> my plane even more... Thanks Bob!
>
> Bret Smith
> RV-9A "Wings"
> Blue Ridge, GA
> www.FlightInnovations.com
>
> *
>
>
> *
>
>
Message 14
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Subject: | Re: GNS 430W Antenna Requirements |
Not OC here but it is only for the GPS antenna.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
In a message dated 3/9/2007 9:56:41 A.M. Central Standard Time,
smithhb@tds.net writes:
Is the minimum length cable required for both COM and NAV?
<BR><BR><BR>**************************************<BR> AOL now offers free
email to everyone. Find out more about what's free from AOL at
http://www.aol.com.
Message 15
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Subject: | Re: Never Again Online |
At 10:02 AM 3/9/2007 -0500, you wrote:
>Today there was another article in "Never Again Online" that is a
>reassuring read.
><http://www.aopa.org/pilot/never_again/2007/na0703.html>http://www.aopa.org/pilot/never_again/2007/na0703.html
>
>It makes me appreciate the dual alt electrical system I am installing in
>my plane even more... Thanks Bob!
Thank you for sharing this find with us. I've posted the
commented article at:
http://www.aeroelectric.com/articles/neveragain/Stress_Changes_Everything.pdf
I would encourage all newcomers to the List to review
the pieces posted at:
http://www.aeroelectric.com/articles/neveragain/
. . . along with Chapter 17 in the 'Connection that
speaks to SYSTEM RELIABILITY and crafting flight
systems that (1) meet your mission needs and (2) not
subject to failures that generate an emergency. To
recap:
# Nuckolls' first law of airplane systems design sez: "Things break"
# The Second: "Systems shall be designed so that when things
break, no immediate hazard is created."
# The third: "Things needed for comfortable termination
of flight require backup or special consideration to insure
operation and availability"
# The forth: "Upgrading the quality, reliability, longevity,
or capability of a part shall be because you're tired of
replacing it or want some new feature, not because it damned
near got you killed."
If these tenants are observed (not difficult to do) then
it makes no difference where you buy your parts, how much money
you spend on them or which parts you select. You're free to
try any selection with the goal of exploring how long it will
last or how well it will perform.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
Message 16
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Subject: | Re: Never Again Online |
Bret Smith wrote:
> Today there was another article in "Never Again Online" that is a reassuring read. http://www.aopa.org/pilot/never_again/2007/na0703.html
>
> It makes me appreciate the dual alt electrical system I am installing in my plane
even more... Thanks Bob!
>
> Bret Smith
> RV-9A "Wings"
> Blue Ridge, GA
> www.FlightInnovations.com
>
Summarization:
I fly without a low voltage warning light and keep nearly depleted
batteries in my handheld radio. My ships battery probably has one foot
in the grave and another on a banana peel, but I really don't know
because of the lack of a low voltage light and the fact that I've never
checked it. I like to fly with every light blazing whenever possible.
I got very concerned one day when my alternator gave up the ghost and
the airport was busy. I didn't want to divert to a less used airport,
and I didn't want to upset my wife. Fortunately, the handheld worked
well enough to get landing clearance from ATC.
Message 17
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Subject: | Garmin 430/530 and WAAS |
I just had my 430 updated yesterday. Actually, I took it to my avionics
shop on February 20. They sent it to Garmin who then refurbished my old
box with new knobs, screen, new GPS processor, replaced BNC connectors,
and realigned everything.
My shop had to make a new RG-400 cable with 3 db loss. That wound up
being a 14' cable to reach the new GPS antenna that is mounted about 10"
in front of the 430 rack. Otherwise, absolutely no changes to my
Velocity's wiring.
I then flew GPS approaches into 3 different airports, one ILS approach,
and engaged the autopilot to make sure all was working OK.
One word - NICE!
The GPS glide slope is nice and smooth - not twitchy like an ILS. The
Glide Slope starts working as soon as you turn inbound at the IAF and
works all the way down to the ground. Once on the ground, GPS altitude
is within 10 feet (that is the resolution of the altitude readout) of
the runway elevation.
It was easy to transition from the legacy 430 to the new 430W.
This upgrade is HIGHLY RECOMMENDED!!!!
Message 18
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Subject: | Re: Never Again Online |
At 02:58 PM 3/9/2007 -0500, you wrote:
><echristley@nc.rr.com>
>
>Bret Smith wrote:
>>Today there was another article in "Never Again Online" that is a
>>reassuring read. http://www.aopa.org/pilot/never_again/2007/na0703.html
>>
>>It makes me appreciate the dual alt electrical system I am installing in
>>my plane even more... Thanks Bob!
>>
>>Bret Smith
>>RV-9A "Wings"
>>Blue Ridge, GA
>>www.FlightInnovations.com
>>
>Summarization:
>
>I fly without a low voltage warning light and keep nearly depleted
>batteries in my handheld radio. My ships battery probably has one foot in
>the grave and another on a banana peel, but I really don't know because of
>the lack of a low voltage light and the fact that I've never checked
>it. I like to fly with every light blazing whenever possible.
>I got very concerned one day when my alternator gave up the ghost and the
>airport was busy. I didn't want to divert to a less used airport, and I
>didn't want to upset my wife. Fortunately, the handheld worked well
>enough to get landing clearance from ATC.
Let's not whack on this guy too hard. First, we should
look to his teachers . . . and the teachers of his teachers.
My own instructors of some 26 years ago were woefully ignorant
of electrical system physics and function. Folks seldom rise
above their teachers. Recall too that only a small
percentage of what is taught is retained. It's probably fair to
assert that the teachers are not getting any better. This
leads us inexorably to the notion that a majority of today's GA
pilots are potential victims of the same or similar situations.
In a segmented, planned activity where everyone is responsible only for
their own part of the plan (and can make your life exceedingly miserable
for transgressions), nobody is responsible for final outcomes.
If this guy's story appeared in the NTSB records as another
smoking hole, it's doubtful that the report would cite all the
ways in which his teachers and other suppliers of goods and services
delivered less than the-best-we-know-how-to-do thus contributing
to his demise.
Given the $time$ that it takes to assemble an OBAM aircraft it's
doubtful that the costs per pound of airplane are much better than
buying a spam can. Where the real return on investment comes is
the fact that folks who seek out and exploit the teachers in
the OBAM venue can ultimately become one with their machine. There's
value that goes far beyond performance and utility when the individual
at the controls UNDERSTANDS the performance and limits of both himself
and all the flight system equipment. Understanding that operates
in an unregulated environment gives us all a real leg-up for taking
responsibility for our own outcomes. Something our
spam-can-flying/government-schooled brothers are not even aware
of.
But be forewarned that anyone who frequents this List will be
hard pressed to garner sympathy for an unhappy outcome if
your own smoking hole comes about because of a lack electrical
system integrity or performance. Unlike the guy who wrote the
AOPA story, YOU have teachers here that DO understand and are
willing to help you understand too.
Recall that the hero of the story in Chapter 17, Martin
Gonzales wrote me some years later to report that deductions
I made concerning his story were dead on . . . he reported
also that an RV kit was on order. Somebody might do Mr.
Shalhoub a good turn by inviting him to join a few of the more
illuminating Lists on matronics.
Bob . . .
Message 19
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Subject: | antenna placement |
I assume you meant the VHF and XPDR antennas should be "at least" 36 inches
apart and not "exactly" 36 inches apart?
Rod
DO NOT ARCHIVE
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Message 20
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Subject: | "It all depends." |
While reading the latest edition of Aviation Safety magazine today I ran
across the following...
To quote someone with more hours in more types of aircraft than many of us
can ever hope to have - "Old Bob" Siegfried - "It all depends."
Well, we're in the presence of greatness here! :O)
Way to go Bob.
Rodney in Tennessee
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Message 21
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Subject: | antenna placement |
Good Evening Rodney,
The Comant antenna folks in their installation instructions specify a
minimum of 36 inches IF possible.
Further apart IS better. But, closer will USUALLY work!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
In a message dated 3/9/2007 5:28:11 P.M. Central Standard Time,
rdunhamtn@hotmail.com writes:
--> AeroElectric-List message posted by: "Rodney Dunham"
<rdunhamtn@hotmail.com>
I assume you meant the VHF and XPDR antennas should be "at least" 36 inches
apart and not "exactly" 36 inches apart?
Rod
DO NOT ARCHIVE
<BR><BR><BR>**************************************<BR> AOL now offers free
email to everyone. Find out more about what's free from AOL at
http://www.aol.com.
Message 22
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Subject: | Re: "It all depends." |
In a message dated 3/9/2007 5:35:35 P.M. Central Standard Time,
rdunhamtn@hotmail.com writes:
Well, we're in the presence of greatness here! :O)
Way to go Bob.
Rodney in Tennessee
Blushing profusely here!!
Thank you for the nice comment.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
<BR><BR><BR>**************************************<BR> AOL now offers free
email to everyone. Find out more about what's free from AOL at
http://www.aol.com.
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Subject: | "It all depends." |
This list has the honor of the attention of at least two great gentlemen
named Bob on it; maybe more. You both set a fine example of both knowledge
and manners for the rest of us.
Terry
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Friday, March 09, 2007 3:37 PM
Subject: Re: AeroElectric-List: "It all depends."
In a message dated 3/9/2007 5:35:35 P.M. Central Standard Time,
rdunhamtn@hotmail.com writes:
Well, we're in the presence of greatness here! :O)
Way to go Bob.
Rodney in Tennessee
Blushing profusely here!!
Thank you for the nice comment.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
_____
AOL now offers free email to everyone. Find out more about what's free from
AOL at <http://www.aol.com?ncid=AOLAOF00020000000339> AOL.com.
Message 24
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Subject: | Transponder location in the panel |
Bob,
All this talk about transponder "Antenna" locations has me thinking about
the location of the transponder itself. Will my Becker 2 1/4" transponder
(250watt) be "polite" to the Trutrak autopilot sitting next to it within
1/4"? Or should I locate a less critical device in the hole right next to
the transponder? If so which device would likely get along in close
proximity with the transponder? Voltmeter, electronic fuel gauge,
electronic tach, electronic clock?
Bevan
RV7A
Getting ready to start the electrical installation
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