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Flarm unit performance to OGN Ground station issue.



 
 
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  #11  
Old August 18th 18, 09:25 PM posted to rec.aviation.soaring
Richard Pfiffner[_2_]
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Posts: 319
Default Flarm unit performance to OGN Ground station issue.

On Saturday, August 18, 2018 at 12:15:06 PM UTC-7, kinsell wrote:
On 08/18/2018 09:33 AM, Richard Pfiffner wrote:
On Saturday, August 18, 2018 at 4:45:25 AM UTC-7, waremark wrote:
Isn't it supposed to transmit from both antennas with the current firmware?


PowerFlarm transmits and receives on Antenna A, receives on B and receives on ADS-B.

Richard
www.craggyaero.com


True for PowerFlarm. This is in New Zealand, presumably using Flarm
down there, and yes current firmware is supposed to transmit and receive
on both A and B.


Please direct me the Flarm Model the transmits on both A and B Antennas and the manual that specifies this.

Richard
  #12  
Old August 18th 18, 10:09 PM posted to rec.aviation.soaring
Dave Watrous
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Posts: 2
Default Flarm unit performance to OGN Ground station issue.

Release notes for Flarm firmware version 6.40:

PowerFLARM: Fully symmetric antenna diversity, dynamic receive and transmit on
both antennas (except USA and Canada)
  #13  
Old August 18th 18, 10:31 PM posted to rec.aviation.soaring
Darryl Ramm
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Posts: 2,403
Default Flarm unit performance to OGN Ground station issue.

On Saturday, August 18, 2018 at 2:09:46 PM UTC-7, Dave Watrous wrote:
Release notes for Flarm firmware version 6.40:

PowerFLARM: Fully symmetric antenna diversity, dynamic receive and transmit on
both antennas (except USA and Canada)


Thank you very much to the FCC.

We need a new version of Eric Idle's FCC song addressing device approval: https://www.youtube.com/watch?v=9tn1QNxEoF4 (NSFW)

  #14  
Old August 19th 18, 01:38 AM posted to rec.aviation.soaring
Richard Pfiffner[_2_]
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Posts: 319
Default Flarm unit performance to OGN Ground station issue.

On Saturday, August 18, 2018 at 2:31:44 PM UTC-7, Darryl Ramm wrote:
On Saturday, August 18, 2018 at 2:09:46 PM UTC-7, Dave Watrous wrote:
Release notes for Flarm firmware version 6.40:

PowerFLARM: Fully symmetric antenna diversity, dynamic receive and transmit on
both antennas (except USA and Canada)


Thank you very much to the FCC.

We need a new version of Eric Idle's FCC song addressing device approval: https://www.youtube.com/watch?v=9tn1QNxEoF4 (NSFW)


So much for being Great Again.

Richard
  #15  
Old August 19th 18, 04:04 AM posted to rec.aviation.soaring
Paul Agnew
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Posts: 306
Default Flarm unit performance to OGN Ground station issue.

On Saturday, August 18, 2018 at 8:38:55 PM UTC-4, Richard Pfiffner wrote:
So much for being Great Again.

Richard


It takes time to reverse rules put into place by the previous administrations.

PA

  #16  
Old August 19th 18, 02:42 PM posted to rec.aviation.soaring
Richard Pfiffner[_2_]
external usenet poster
 
Posts: 319
Default Flarm unit performance to OGN Ground station issue.

On Saturday, August 18, 2018 at 8:04:51 PM UTC-7, Paul Agnew wrote:
On Saturday, August 18, 2018 at 8:38:55 PM UTC-4, Richard Pfiffner wrote:
So much for being Great Again.

Richard


It takes time to reverse rules put into place by the previous administrations.

PA


I looked into FCC certification of a Flarm Device and was amazed at the cost.

Around $25,000 per enclosure, if you passed the first time. That is why manufacturers have approached Flarm as an add on device.

Richard,
  #17  
Old August 19th 18, 02:56 PM posted to rec.aviation.soaring
Chris Wedgwood[_2_]
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Posts: 100
Default Flarm unit performance to OGN Ground station issue.

On Saturday, August 18, 2018 at 2:18:16 PM UTC+2, Glidingstuff wrote:
Hi Chris and Dan

Yes the coax is connected to the aircraft ground. The aerials are correctly connected. Both aerial outlets are activated in the unit and are used. The Flarm transmit and receive aerial is on the top of the aircraft and the receive only aerial is underneath on the starboard side just behind the firewall.

Cheers

Paul


Then I would try disconnecting it at the antenna end.
  #18  
Old August 19th 18, 04:05 PM posted to rec.aviation.soaring
Benedict Smith
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Posts: 30
Default Flarm unit performance to OGN Ground station issue.

Paul,
No sign of your posting on the OGN forum, however a couple of
points occur to me,
The Flarm is probably faulty if the frequency is that unstable, I
have seen units where the frequency offset has been close to
unacceptable, but they don’t normally change much in use, as a
workaround you could ask the owner of the ground station to
increase the bandwidth that they receive on, this has the
downside of higher cpu load and greater noise but will pick up off-
frequency units better (perhaps set the demodulator ScanMargin
to around 20 or 25)
But in the long term you will probably need to get the Flarm unit
checked by the manufacturer as it doesn’t look right to me.
Ben. (U.K. OGN station Aldersht2)


At 01:17 18 August 2018, Glidingstuff wrote:
Thanks for the quick reply Dan.

Have you updated the FLARM to the latest firmware (6.60)?

Yes. Both units are running 6.60
What kind of coax did you use to connect the antennae to the

FLARM and
how long are the runs?
Aviation quality and about three meters
Have you tried a factory reset of the FLARM?

Yes. Its just back from being reset. But they admit they didn't

check the
freq performance.
Does the towplane have a metal tint on the plexiglass

windscreen?
No

I haven't ever seen the frequency offset move that quickly.

We had a FLARM CORE in the club which went for repair and

the transmit
section was replaced; it could only be seen for 100m or so. Now,

range like
all the others (OGN ranges of greater than 40 km).

A great resource is the forum for the OGN; it is at

https://groups.google.com/forum/#!fo...nglidernetwork .

Details on
joining it are at http://wiki.glidernet.org/contact .

Cheers
Dan


I have sent the above data to the OGN people but no reply from

them as yet
either.

Paul



  #19  
Old August 19th 18, 06:56 PM posted to rec.aviation.soaring
Charlie Quebec
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Posts: 253
Default Flarm unit performance to OGN Ground station issue.

Never was great, never will be.
 




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