Easy to make and use, works well, see the update I posted here:
http://powerflarm.us/powerflarm-installation-notes/

Enjoy,
Best Regards, Dave

On Friday, April 5, 2013 3:42:45 PM UTC-7, Dave Nadler wrote:
> Easy to make and use, works well, see the update I posted here: http://powerflarm.us/powerflarm-installation-notes/ Enjoy, Best Regards, Dave

Quite a bit nicer and cleaner antenna installations at:

http://www.craggyaero.com/cables_&_antennas.htm

Richard
www.craggyaero.com

HI Richard,
That looks clean... it doesn't look like the dipole that comes with the
brick either...
1-what antenna is it?
2-how is it mounted under the covers? on plastic frame?

Any difference between it and the dipole?

Stephen S9

HI Richard,
That looks clean... it doesn't look like the dipole that comes with the
brick either...
1-what antenna is it?
2-how is it mounted under the covers? on plastic frame?

Any difference between it and the dipole?

Stephen S9

Sorry, but I wouldn't call any of the installations in these photos "nice". not even close. Effective yes, but nice? I am glad I don't have carbon in my nose and can get 4 miles average range according to Flarm range analyzer by mounting the antenna in the nose of my 27a. Otherwise I would have looked for other antenna solutions than the dipole solutions shown in these photos.
Even with the dipole, I bet sufficient range can be archived by hiding half of it below the glare shield.

Ramy

Ramy,

That's exactly what I've thought. I would have put my Flarm antenna in the nose of my glider like you did except that space was already occupied by a transponder antenna. So, last fall I embarked on designing and modelling a dipole like antenna that is constructed of thin spring wire (visually unobstructive). It has a 4 element wire counterpoise that lives below the glare shield with a single vertical element above the glare shield. I'm using a small breakaway coaxial antenna which also comprises the mounting through the glareshield. I'm planning to attend the Perry contest so I should get data on how well it performs there.

I had in mind that I might manufacture this antenna as a commercial endeavor. However, when I disclosed the design to Flarm they had certain objections. The objection that I couldn't dismiss was that the Flarm radio circuit can be damaged by static discharge and the thin exposed element would increase that suseptibility.

On Friday, April 5, 2013 6:41:15 PM UTC-7, Sam Discusflyer wrote:
> HI Richard, That looks clean... it doesn't look like the dipole that comes with the brick either... 1-what antenna is it? 2-how is it mounted under the covers? on plastic frame? Any difference between it and the dipole? Stephen S9

Sam,

Three PowerFlarm antennas are shown:

http://www.craggyaero.com/cables_&_antennas.htm

All antennas fit to the panel cover with a bulkhead fitting then the antennas screw on to the fitting.

500103 1/4 wave rubber duck 3.4" with 6" ground plane 2' cable
500101 1/2 wave dipole 5" no ground plane required 2' cable
500102 1/2 wave rubber duck 2.3" with 6" ground plane 2' cable

Richard
www.craggyaero.com

Agree with Ramy.
Using the same method - documented by Peter Kelly - in the nose of the 27.. But looking for a good combination for antenna #2. Perhaps another dipole like in Pete Alexander's 29. Only one pole is visible above the glare shield and it just sits in a grommet which would let go in an emergency.
Jim

On 4/6/2013 7:10 AM, Steve Koerner wrote:
> Ramy,
>
> That's exactly what I've thought. I would have put my Flarm antenna
> in the nose of my glider like you did except that space was already
> occupied by a transponder antenna. So, last fall I embarked on
> designing and modelling a dipole like antenna that is constructed of
> thin spring wire (visually unobstructive). It has a 4 element wire
> counterpoise that lives below the glare shield with a single vertical
> element above the glare shield. I'm using a small breakaway coaxial
> antenna which also comprises the mounting through the glareshield.
> I'm planning to attend the Perry contest so I should get data on how
> well it performs there.
>
> I had in mind that I might manufacture this antenna as a commercial
> endeavor. However, when I disclosed the design to Flarm they had
> certain objections. The objection that I couldn't dismiss was that
> the Flarm radio circuit can be damaged by static discharge and the
> thin exposed element would increase that suseptibility.

Perhaps a small ball on the end like a transponder antenna? Or is it the
exposed wire that is the problem? The "classic" Flarm seems to have a
plain wire antenna with a small button on top.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)