Today's Message Index:
----------------------
1. 06:10 AM - IFR GPS requirements ()
2. 07:06 AM - Re: VHF Transmitting Noise (Don Morrisey)
3. 07:31 AM - Re: VHF Transmitting Noise (Garlick, Bill (W.D.))
4. 01:34 PM - Re: VHF Transmitting Noise (Noel Loveys)
5. 01:48 PM - Re: VHF Transmitting Noise (Noel Loveys)
6. 02:05 PM - Re: VHF Transmitting Noise (Don Morrisey)
Message 1
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Subject: | IFR GPS requirements |
1/16/2008
Hello Bill, Avoid that poor soul -- he has not been around long enough or
cared enough to learn that type certificated aircraft and amateur built
experimental aircraft are treated very differently in the FAA's paperwork
system.
What he has described in the way of paperwork approval just simply does not
apply to your airplane.
Here is a quote from the signature section of the FAA Form 337:
"I certify that the repair and/or alteration made to the unit(s) identified
in item 5 above and described on the reverse or attachments hereto have been
made in accordance with the requirements of Part 43 of the U.S. Federal
Aviation Regulations and that the information furnished herein is true and
correct to the best of my knowledge."
And here is a quote from FAR Part 43.1:
"(b) This part does not apply to any aircraft for which the FAA has issued
an experimental certificate, unless the FAA has previously issued a
different kind of airworthiness certificate for that aircraft."
Since part 43 does not apply to amateur built aircraft issued a Special
Airworthiness Certificate in the Experimental Category for the purpose of
operating amateur-built aircraft (FAR 21.191 (g)) how can one properly
comply with the signature certification requirement on the FAA Form 337?
Several years ago a poster described his mistaken attempt to comply with all
FAA type certificated regulatory and advisory circular requirements for the
IFR GPS installation in his amateur built experimental airplane. He even
flew a test flight with a terrified FAA inspector who spent the entire
flight frantically looking out the window in fear of a mid air collision.
The entire effort was wasted because no FAA agency or procedure for the
approval existed -- just initial erroneous assumptions by uninformed FAA
employees.
'OC' Says: "The best investment we can make is the effort to gather and
understand knowledge."
-----------------------------------------
From: "William Gill" <wgill10(at)comcast.net>Subject: IFR GPS requirements
Hello All,
I have a Bendix-King KLN 94 GPS (IFR certified unit) in an RV-7. During
discussions with an FAA inspector, I was told that I was not allowed to
use this unit for IFR use until I completed a 337 form with a field
approval, and completed the required test flight. I was not aware that
the experimental ships had to jump through the same hoops as the Type
Certificated aircraft. Can this possibly be true? I welcome all input on
this subject.
Bill
RV-7
Lee's Summit, MO
Message 2
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Subject: | VHF Transmitting Noise |
Hi Bill, you may want to look into this product: http://miracleantenna.com/
smoothie.htm
I have no personal experience with it, but it was mentioned on the yahoo ja
biru engine list in regard to engine noise. It does have the capacitor Noe
l mentions.
If you do use it I would be curious to know your results.
Don...www.donsbushcaddy.comDon Morrisey's Skunkworks
Subject: Avionics-List: VHF Transmitting NoiseDate: Tue, 15 Jan 2008 08:40:
04 +0000From: bgarlick@ford.comTo: avionics-list@matronics.com
Hi
I'd appreciate some comments or advice from avionics installers who half-un
derstand what they're doing? (My limits are that I need to follow manufactu
rers' installation instructions and wiring diagrams to the letter; and if s
omething doesn't quite work I'm at a complete loss!...Although if any advic
e was something like connecting a xxx ohm resistor in parallel in a particu
lar circuit, I could manage to cope with that).
I have just installed an ICOM IC-A200 transceiver coupled with a PS Enginee
ring PM501 Intercom in a newly built Vans RV7, and when I press the PTT swi
tch I get a lot of noise feeding-back into the earphones as I'm talking=85
The Air Traffic Controllers say they're reading me "fives", and the noise d
oesn't occur when Receiving or when using the voice-activated intercom. Th
e noise isn't in time with the engine, but is constant whilst transmitting
and sounds like wind blowing across the microphone.
Any ideas about what could be wrong?
Thanks
BillG
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Message 3
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Subject: | VHF Transmitting Noise |
Thanks Don, I was able access the website (after inserting www) and
immediately spotted the choke that Noel suggested sitting in the middle
of the circuit board picture. I might give it a try and will let you
know how it works...it's worth the relatively high cost if it gets rid
of that damn noise! (...I've found out already I can get a Toroid choke
from a local electronics store for GBP2.26 = USD4.63)
BillG - RV7
________________________________
From: owner-avionics-list-server@matronics.com
[mailto:owner-avionics-list-server@matronics.com] On Behalf Of Don
Morrisey
Sent: Wednesday, January 16, 2008 3:04 PM
Subject: RE: Avionics-List: VHF Transmitting Noise
Hi Bill, you may want to look into this product:
http://miracleantenna.com/smoothie.htm
I have no personal experience with it, but it was mentioned on the yahoo
jabiru engine list in regard to engine noise. It does have the
capacitor Noel mentions.
If you do use it I would be curious to know your results.
Don...
www.donsbushcaddy.com <http://www.donsbushcaddy.com/>
Don Morrisey's Skunkworks
________________________________
Subject: Avionics-List: VHF Transmitting Noise
From: bgarlick@ford.com
Hi
I'd appreciate some comments or advice from avionics installers who
half-understand what they're doing? (My limits are that I need to follow
manufacturers' installation instructions and wiring diagrams to the
letter; and if something doesn't quite work I'm at a complete
loss!...Although if any advice was something like connecting a xxx ohm
resistor in parallel in a particular circuit, I could manage to cope
with that).
I have just installed an ICOM IC-A200 transceiver coupled with a PS
Engineering PM501 Intercom in a newly built Vans RV7, and when I press
the PTT switch I get a lot of noise feeding-back into the earphones as
I'm talking... The Air Traffic Controllers say they're reading me
"fives", and the noise doesn't occur when Receiving or when using the
voice-activated intercom. The noise isn't in time with the engine, but
is constant whilst transmitting and sounds like wind blowing across the
microphone.
Any ideas about what could be wrong?
Thanks
BillG
target=_blank>http://www.matronics.com/Navigator?Avionics-List
p://forums.matronics.com
blank>http://www.matronics.com/contribution
________________________________
Get the power of Windows + Web with the new Windows Live. Get it now!
<http://www.windowslive.com?ocid=TXT_TAGHM_Wave2_powerofwindows_012008>
Message 4
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Subject: | VHF Transmitting Noise |
I went to check the site but got a 404 error then I tried to get to the root
directory and got a password block.
The unit, a choke, is a coil with a capacitor usually in the centre of the
coil. It is wired in series with the power line. A capacitor can be used to
filter a different kind of noise if it is just connected between the power
line and the ground.... Capacitors don't conduct DC current. A capacitor
set up the second way is generally used to smooth out DC voltage in power
supplies.
Noel
From: owner-avionics-list-server@matronics.com
[mailto:owner-avionics-list-server@matronics.com] On Behalf Of Don Morrisey
Sent: Wednesday, January 16, 2008 11:34 AM
Subject: RE: Avionics-List: VHF Transmitting Noise
Hi Bill, you may want to look into this product:
http://miracleantenna.com/smoothie.htm
I have no personal experience with it, but it was mentioned on the yahoo
jabiru engine list in regard to engine noise. It does have the capacitor
Noel mentions.
If you do use it I would be curious to know your results.
Don...
www.donsbushcaddy.com <http://www.donsbushcaddy.com/>
Don Morrisey's Skunkworks
_____
Subject: Avionics-List: VHF Transmitting Noise
From: bgarlick@ford.com
Hi
I'd appreciate some comments or advice from avionics installers who
half-understand what they're doing? (My limits are that I need to follow
manufacturers' installation instructions and wiring diagrams to the letter;
and if something doesn't quite work I'm at a complete loss!...Although if
any advice was something like connecting a xxx ohm resistor in parallel in a
particular circuit, I could manage to cope with that).
I have just installed an ICOM IC-A200 transceiver coupled with a PS
Engineering PM501 Intercom in a newly built Vans RV7, and when I press the
PTT switch I get a lot of noise feeding-back into the earphones as I'm
talking. The Air Traffic Controllers say they're reading me "fives", and the
noise doesn't occur when Receiving or when using the voice-activated
intercom. The noise isn't in time with the engine, but is constant whilst
transmitting and sounds like wind blowing across the microphone.
Any ideas about what could be wrong?
Thanks
BillG
target=_blank>http://www.matronics.com/Navigator?Avionics-List
p://forums.matronics.com
blank>http://www.matronics.com/contribution
_____
Get the power of Windows + Web with the new Windows Live. Get it now!
<http://www.windowslive.com?ocid=TXT_TAGHM_Wave2_powerofwindows_012008>
Message 5
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Subject: | VHF Transmitting Noise |
Thanks for the key to get into the site. That unit appears to be an
excellent choice. It will choke out a number of different frequencies, I'm
sure, and it will help with voltage fluctuations.
A good choice It looks heavy enough to install across the feed to your
avionics buss if your plane is wired that way.
Noel
From: owner-avionics-list-server@matronics.com
[mailto:owner-avionics-list-server@matronics.com] On Behalf Of Garlick, Bill
(W.D.)
Sent: Wednesday, January 16, 2008 11:58 AM
Subject: RE: Avionics-List: VHF Transmitting Noise
Thanks Don, I was able access the website (after inserting www) and
immediately spotted the choke that Noel suggested sitting in the middle of
the circuit board picture. I might give it a try and will let you know how
it works.it's worth the relatively high cost if it gets rid of that damn
noise! (.I've found out already I can get a Toroid choke from a local
electronics store for GBP2.26 = USD4.63)
BillG - RV7
_____
From: owner-avionics-list-server@matronics.com
[mailto:owner-avionics-list-server@matronics.com] On Behalf Of Don Morrisey
Sent: Wednesday, January 16, 2008 3:04 PM
Subject: RE: Avionics-List: VHF Transmitting Noise
Hi Bill, you may want to look into this product:
http://miracleantenna.com/smoothie.htm
I have no personal experience with it, but it was mentioned on the yahoo
jabiru engine list in regard to engine noise. It does have the capacitor
Noel mentions.
If you do use it I would be curious to know your results.
Don...
www.donsbushcaddy.com <http://www.donsbushcaddy.com/>
Don Morrisey's Skunkworks
_____
Subject: Avionics-List: VHF Transmitting Noise
From: bgarlick@ford.com
Hi
I'd appreciate some comments or advice from avionics installers who
half-understand what they're doing? (My limits are that I need to follow
manufacturers' installation instructions and wiring diagrams to the letter;
and if something doesn't quite work I'm at a complete loss!...Although if
any advice was something like connecting a xxx ohm resistor in parallel in a
particular circuit, I could manage to cope with that).
I have just installed an ICOM IC-A200 transceiver coupled with a PS
Engineering PM501 Intercom in a newly built Vans RV7, and when I press the
PTT switch I get a lot of noise feeding-back into the earphones as I'm
talking. The Air Traffic Controllers say they're reading me "fives", and the
noise doesn't occur when Receiving or when using the voice-activated
intercom. The noise isn't in time with the engine, but is constant whilst
transmitting and sounds like wind blowing across the microphone.
Any ideas about what could be wrong?
Thanks
BillG
target=_blank>http://www.matronics.com/Navigator?Avionics-List
p://forums.matronics.com
blank>http://www.matronics.com/contribution
_____
Get the power of Windows + Web with the new Windows Live. Get it now!
<http://www.windowslive.com?ocid=TXT_TAGHM_Wave2_powerofwindows_012008>
http://www.matronics.com/contribution
Message 6
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Subject: | VHF Transmitting Noise |
Hi Noel, I had the link wrong.
Here is the correct link: http://www.miracleantenna.com/smoothie/htm
Donwww.donsbushcaddy.comDon Morrisey's Skunkworks
From: noelloveys@yahoo.caTo: avionics-list@matronics.comSubject: RE: Avioni
cs-List: VHF Transmitting NoiseDate: Wed, 16 Jan 2008 17:56:35 -0330
I went to check the site but got a 404 error then I tried to get to the roo
t directory and got a password block.
The unit, a choke, is a coil with a capacitor usually in the centre of the
coil. It is wired in series with the power line. A capacitor can be used t
o filter a different kind of noise if it is just connected between the powe
r line and the ground.... Capacitors don=92t conduct DC current. A capaci
tor set up the second way is generally used to smooth out DC voltage in pow
er supplies.
Noel
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