novaBBS - rec.aviation.soaring - Re: FLARM B Antenna

FLARM B Antenna - ASW19

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Subject: FLARM B Antenna - ASW19
From: patjord...@gmail.com (Pat Jordan)
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by: Pat Jordan - Mon, 25 Oct 2021 11:12 UTC

Re: FLARM B Antenna - ASW19

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Subject: Re: FLARM B Antenna - ASW19
From: tangoei...@gmail.com (Tango Eight)
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by: Tango Eight - Mon, 25 Oct 2021 12:11 UTC

I installed a dipole antenna on Flarm B in my ASW-20. I attached to the fuselage forward of the right rudder pedal with Dual Lock, worked well.

On Monday, October 25, 2021 at 7:12:14 AM UTC-4, Pat Jordan wrote:
> Does anyone have experience installing a FLARM B Antenna on an ASW19? Thank you.
>
> Pat Jordan, JE

Re: FLARM B Antenna - ASW19

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Subject: Re: FLARM B Antenna - ASW19
From: handb9...@gmail.com (Richard Pfiffner)
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by: Richard Pfiffner - Mon, 25 Oct 2021 12:15 UTC

On Monday, October 25, 2021 at 4:12:14 AM UTC-7, Pat Jordan wrote:
> Does anyone have experience installing a FLARM B Antenna on an ASW19? Thank you.
>
> Pat Jordan, JE

If your glider is fiberglass you can install on the inside in the nose. I put the Flarm B on the side in front of the pedals and ADSB on the other side of my Ventus B.
All worked fine.
I used Dual Lock this is thick enough so the Ends do not touch the fiberglass.

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

Richard
www.craggyaero.com

Re: FLARM B Antenna - ASW19

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Subject: Re: FLARM B Antenna - ASW19
From: markmoch...@gmail.com (Mark Mocho)
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by: Mark Mocho - Mon, 25 Oct 2021 12:39 UTC

Re: FLARM B Antenna - ASW19

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Subject: Re: FLARM B Antenna - ASW19
From: handb9...@gmail.com (Richard Pfiffner)
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by: Richard Pfiffner - Mon, 25 Oct 2021 13:19 UTC

On Monday, October 25, 2021 at 5:39:13 AM UTC-7, Mark Mocho wrote:
> Richard- Isn't there supposed to be a minimum distance between the antennae? I would think that in the nose they would be too close together and the metal pedal structure would interfere with RX/TX.

Marc,

I have not found that to be the case in the Ventus b. This has been my antenna installation for over 10 years and in my opinion acceptable it works. The A antenna is on the top of the instrument panel cover. The idea of the B antenna is to get a different look than the A antenna.
It does not appear to interfere with the ADS-B reception. String the antennas and see how they work. On the PowerFlarm in the USA the B antenna is receive RX only. Fusion B antenna both RX/TX. It is just about impossible to install an antenna in a glider that is not blocked by something.

Richard
www.craggyaero.com

Re: FLARM B Antenna - ASW19

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Subject: Re: FLARM B Antenna - ASW19
From: handb9...@gmail.com (Richard Pfiffner)
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by: Richard Pfiffner - Mon, 25 Oct 2021 13:51 UTC

On Monday, October 25, 2021 at 6:19:36 AM UTC-7, Richard Pfiffner wrote:
> On Monday, October 25, 2021 at 5:39:13 AM UTC-7, Mark Mocho wrote:
> > Richard- Isn't there supposed to be a minimum distance between the antennae? I would think that in the nose they would be too close together and the metal pedal structure would interfere with RX/TX.
> Marc,
>
> I have not found that to be the case in the Ventus b. This has been my antenna installation for over 10 years and in my opinion acceptable it works. The A antenna is on the top of the instrument panel cover. The idea of the B antenna is to get a different look than the A antenna.
> It does not appear to interfere with the ADS-B reception. String the antennas and see how they work. On the PowerFlarm in the USA the B antenna is receive RX only. Fusion B antenna both RX/TX. It is just about impossible to install an antenna in a glider that is not blocked by something.
>
>
> Richard
> www.craggyaero.com

Antennas should be separated from each other:
 Min. distance between antenna on FLARM A and FLARM B port: 30 cm (1 ft)
 Min. distance between antenna on FLARM A port and GPS antenna: 30 cm (1 ft)
 Min. distance between antenna on FLARM B port and GPS antenna: 30 cm (1 ft)
 Min. distance between ADS-B/SSR antenna and GPS antenna: 10 cm (4”)

Richard
www.craggyaero.com

Re: FLARM B Antenna - ASW19

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Subject: Re: FLARM B Antenna - ASW19
From: christop...@googlemail.com (Christoph Barniske)
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by: Christoph Barniske - Mon, 25 Oct 2021 15:37 UTC

Hi,

the PowerFLARM installation manual recommends min. 6ft/2m distance between antennas on FLARM A and B ports. In my LS8, the A port antenna is on the instrument panel cover. B port antenna is fixed within the fuselage behind the undercarriage on the aft bulkhead. It's recommended to use low-loss cables if they exceed 1m in length (e.g. H155).

European units send and receive on B port, those shipped to the US only receive on B port. So keeping the distance between the antennae may be less critical if you fly in the US. But in both cases, the B port requires software activation through the additional RFB license. See https://flarm.com/wp-content/uploads/man/FTD-033-PowerFLARM-Core-Installation-Manual.pdf for further info.

Christoph

Re: FLARM B Antenna - ASW19

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Subject: Re: FLARM B Antenna - ASW19
From: handb9...@gmail.com (Richard Pfiffner)
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by: Richard Pfiffner - Mon, 25 Oct 2021 21:10 UTC

On Monday, October 25, 2021 at 8:37:56 AM UTC-7, Christoph Barniske wrote:
> Hi,
>
> the PowerFLARM installation manual recommends min. 6ft/2m distance between antennas on FLARM A and B ports. In my LS8, the A port antenna is on the instrument panel cover. B port antenna is fixed within the fuselage behind the undercarriage on the aft bulkhead. It's recommended to use low-loss cables if they exceed 1m in length (e.g. H155).
>
> European units send and receive on B port, those shipped to the US only receive on B port. So keeping the distance between the antennae may be less critical if you fly in the US. But in both cases, the B port requires software activation through the additional RFB license. See https://flarm.com/wp-content/uploads/man/FTD-033-PowerFLARM-Core-Installation-Manual.pdf for further info.
>
> Christoph

Manuals give different separation
https://flarm.com/support/manuals-documents/

Flarm Antenna Manual Application note Flarm antenna installation.

3.3.3 Antenna Separation
Antennas should be separated from each other:
 Min. distance between antenna on FLARM A and FLARM B port: 30 cm (1 ft)
 Min. distance between antenna on FLARM A port and GPS antenna: 30 cm (1 ft)
 Min. distance between antenna on FLARM B port and GPS antenna: 30 cm (1 ft)
 Min. distance between ADS-B/SSR antenna and GPS antenna: 10 cm (4”)

I have been using this minimum separation since flarm was introduced and get acceptable range. 2 M would be hard in most gliders.

Richard
www.craggyaero.com

All power corrupts, but we need electricity.

tech / rec.aviation.soaring / Re: FLARM B Antenna - ASW19

Subject	Author
FLARM B Antenna - ASW19	Pat Jordan
Re: FLARM B Antenna - ASW19	Tango Eight
Re: FLARM B Antenna - ASW19	Richard Pfiffner
Re: FLARM B Antenna - ASW19	Mark Mocho
Re: FLARM B Antenna - ASW19	Richard Pfiffner
Re: FLARM B Antenna - ASW19	Richard Pfiffner
Re: FLARM B Antenna - ASW19	Christoph Barniske
Re: FLARM B Antenna - ASW19	Richard Pfiffner