Today's Message Index:
----------------------
1. 10:18 AM - Re: Antenna Ground Plane (Robert L. Nuckolls, III)
2. 10:55 AM - Re: Antenna Ground Plane (Charlie England)
3. 11:07 AM - Re: Antenna Ground Plane (Alec Myers)
4. 02:42 PM - Re: Antenna Ground Plane (Robert L. Nuckolls, III)
5. 04:47 PM - Re: Antenna Ground Plane ()
6. 07:02 PM - THE FASCINATING WORLD OF SOLDER ALLOYS AND METALLURGY (Art Zemon)
Message 1
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| Subject: | Re: Antenna Ground Plane |
At 08:39 PM 5/30/2019, you wrote:
>Hello,
>
>I'm installing an ACK ELT in a composite aircraft and they recommend
>an aluminum foil ground plane for the antenna.
>
>My question is how do you ensure conductivity between the layers of
>the adhesive aluminum foil and how do you attach the antenna to the foil?
>
>They also want the antenna to be more than 3 ft away from the com
>antenna, why would this be?
Might be easier to ditch the whip antenna
and go with the RST design semi-dipoles
discussed here on the List about 7 years
ago:
https://tinyurl.com/yyz6anjs
This antenna is a dual frequency DIPOLE
that does not require a ground plane.
It mounts no the side of your fuselage
inside surface.
What is the material used in your
airplane's construction?
Bob . . .
Message 2
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| Subject: | Re: Antenna Ground Plane |
On 6/2/2019 12:17 PM, Robert L. Nuckolls, III wrote:
> At 08:39 PM 5/30/2019, you wrote:
>> Hello,
>>
>> Im installing an ACK ELT in a composite aircraft and they recommend
>> an aluminum foil ground plane for the antenna.
>>
>> My question is how do you ensure conductivity between the layers of
>> the adhesive aluminum foil and how do you attach the antenna to the foil?
>>
>> They also want the antenna to be more than 3 ft away from the com
>> antenna, why would this be?
>
> Might be easier to ditch the whip antenna
> and go with the RST design semi-dipoles
> discussed here on the List about 7 years
> ago:
>
>
> https://tinyurl.com/yyz6anjs
>
> <https://tinyurl.com/yyz6anjs> This antenna is a dual frequency DIPOLE
> that does not require a ground plane.
> It mounts no the side of your fuselage
> inside surface.
>
> What is the material used in your
> airplane's construction?
>
>
> Bob . . .
>
Don't know if this is reality, but I've seen some discussion in the past
about ELTs' supplied-antennas being part of the certification 'package'.
I know we're experimentals, but some things we don't get a pass on, like
IFR GPS vs non-TSO nav/ILS radios.
ELTs in general don't give me a lot of warm & fuzzies, but I would like
to be confident that my insurance company doesn't have an 'out' if
they're asked to pay on an accident that I've survived.
Just a thought...
Charlie
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Message 3
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| Subject: | Re: Antenna Ground Plane |
Bob,
If you change the antenna, does the ELT still meet TSO-C126b, is it still
=9Capproved=9D, and does it still meet 14 CFR =C2=A7 91.207?
On Jun 2, 2019, at 13:17, Robert L. Nuckolls, III <nuckolls.bob@aeroelectric
.com> wrote:
At 08:39 PM 5/30/2019, you wrote:
> Hello,
>
> I=99m installing an ACK ELT in a composite aircraft and they recomme
nd an aluminum foil ground plane for the antenna.
>
> My question is how do you ensure conductivity between the layers of the ad
hesive aluminum foil and how do you attach the antenna to the foil?
>
> They also want the antenna to be more than 3 ft away from the com antenna,
why would this be?
Might be easier to ditch the whip antenna
and go with the RST design semi-dipoles
discussed here on the List about 7 years
ago:
https://tinyurl.com/yyz6anjs
This antenna is a dual frequency DIPOLE
that does not require a ground plane.
It mounts no the side of your fuselage
inside surface.
What is the material used in your
airplane's construction?
Bob . . .
Message 4
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| Subject: | Re: Antenna Ground Plane |
At 12:58 PM 6/2/2019, you wrote:
>Bob,
>
>If you change the antenna, does the ELT still
>meet TSO-C126b, is it still =9Capproved=9D, and
>does it still meet 14 CFR =C2=A7 91.207?
probably not according to the guy that
walks around with a rule book under his
arm . . . but it does meet the spirit
and intent. Jim sold a lot of kits.
Bob . . .
Message 5
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| Subject: | Antenna Ground Plane |
Thank you very much for the help.
The aircraft is a KIS made from honeycomb and fiberglass
On the dipole antenna what length should the folded balun be and do I make
the toroid balun with 3 toroids as in the instruction?
Just out of interest why should the ELT antenna be separated from the com
antenna
Thanks again
Mike
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of Robert L.
Nuckolls, III
Sent: June 2, 2019 10:18 AM
Subject: Re: AeroElectric-List: Antenna Ground Plane
At 08:39 PM 5/30/2019, you wrote:
Hello,
I'm installing an ACK ELT in a composite aircraft and they recommend an
aluminum foil ground plane for the antenna.
My question is how do you ensure conductivity between the layers of the
adhesive aluminum foil and how do you attach the antenna to the foil?
They also want the antenna to be more than 3 ft away from the com antenna,
why would this be?
Might be easier to ditch the whip antenna
and go with the RST design semi-dipoles
discussed here on the List about 7 years
ago:
https://tinyurl.com/yyz6anjs
This antenna is a dual frequency DIPOLE
that does not require a ground plane.
It mounts no the side of your fuselage
inside surface.
What is the material used in your
airplane's construction?
Bob . . .
---
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Message 6
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| Subject: | THE FASCINATING WORLD OF SOLDER ALLOYS AND METALLURGY |
I just ran across this very interesting article
THE FASCINATING WORLD OF SOLDER ALLOYS AND METALLURGY
<https://hackaday.com/2019/05/30/the-fascinating-world-of-solder-alloys-and-metallurgy/>
Cheers,
-- Art Z.
--
https://CheerfulCurmudgeon.com/
*Pray as if everything depends on God. Act as if everything depends on you.*
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