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Messages - CliveJ

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31
No one monitoring, figured as the ADSB exchange showed my last flight pointing North all the while and now it shows the track like you would expect that it's a step forward?

32
It says ADSB on the page while it plays it?

33
https://globe.adsbexchange.com/?icao=406cb1,406436&lat=52.712&lon=1.540&zoom=11.1&showTrace=2021-05-16

Check this out. My new Funke connected to a Garmin 396.

Comments appreciated.

Regards, Clive

34
Changing to the Garmin is a wire connection under the panel so not that easy. Given that the ADSB exchange shows the shortcomings of the Funke I'll just change it, fly and then look at the flight with that website. Will report back, Regards, Clive

35
Yes, but you knew what I meant so you are indeed a pedant!

36
Hi thanks for getting back with the reply.

I've been learning some more and seems the data transmitted should indeed include the heading.
I found and example of a transmitted NMEA string
$GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,309.62,120598, ,*10
RMC—Recommended Minimum Specific GPS Data
The 309.62 was the course so it certainly looks like the GPS data that the TXP is transmitting likely should include the heading.
So the question is why isn't the Funke sending out the heading information......

Seems strange that other folk's TXP manage to transmit the heading but the Funke won't. We do have examples of the PAW GPS output being used elsewhere successfully?

As I said I was flying and my friend got a screenshot of the info my TXP was transmitting and it was North all the while.

How are you reading the GPRMC messages?

Do you think it's worth me swinging mine across to the Garmin? Just to prove it's not the Pilot Aware?

Regards, Clive
 

37
Further to the reports above of Funke TRT800 I did some testing today and was monitored by two EC units, my Brand new TXP is a ZTRT800 with V6.3.

I was maneuvering whilst talking to a friend monitoring my flight from his aircraft on the ground. He has SkyEcho displaying on SkyDemon and also Garmin GDL393D with it's own display.  On both displays my aircraft's heading was shown pointing North and when interrogated showed 359 or zero. The positioning and movement was as would be expected.
So there is definitely something amiss in the Transponders output compared to other manufacturers.
At the time FR24 was showing it's usual jumpy but generally correct track direction.

I've just had a look at my flight on the ADSB exchange and the heading was 0.0 or very close zero throughout with the icon pointing North.

On FR24 the heading looks normal with the icon changing to match the track and the track readout changing accordingly.

What I don't know as I mentioned before is how the track is derived on any of these systems, and what is actually transmitted by the TXP within it's extended information. The GPS signal is currently from a Pilot Aware unit, I can fairly easily move this to a Garmin GPS as I have that available too.

I had a chat with Norwich Radar but their system paints in responses and they figure the track out from the movement of the contact so they couldn't help. All aspects of the TXP's transmission were OK as far as They were concerned.

I'm ready to contact with Funke but thought I'd see if there was any feedback to Brian yet?

Regards, Clive

38
I've not used the GPS Global exchange before but just had a play with it interrogating my flight last eve and I do indeed appear to be going backwards and sideways.

I then looked at my flight on FR24 and I was always going forwards, as I was when I checked the flight at the time.

I then looked at G-CIJO's flight on Flight radar from 2/5 and it was always going forwards. It looks like something to do with the functionality of the GPS Global exchange's presentation of the flight data. That doesn't show what's being presented during live flight of course but as I understand it any system will join up individual position reports and string them together so it's where you are each time your transponder transmits.

Is the heading data sent out with the position data? I don't know how it works, maybe someone that does can tell me?

Regards, Clive
P.S. how do you insert a picture in this Forum? Can't seem to figure that out...

39
Image of the start up message from the new Funke. Worked fine and showed it's track fine yesterday. That was looking on FR24, haven't yet had a chance to check it with another aircraft and PAW or SE.

My old Funke transponder worked fine with a Garmin or a PAW GPS 232'd into it but I couldn't get the numbers up to get it approved as it wasn't doing what it needed to. My new one does and I may now go for the approval.

Reading the post above with interest. Regards, Clive

40
https://forums.flyer.co.uk/viewtopic.php?f=1&t=117648&p=1845748#p1845748

Flyer Forum link with much discussion.

Mark, I didn't get the upgrade as mine was too old but do have a new one, I'll have a look at the Firmware number when I power it up shortly.

A number of people (post March '16 delivery) will be OK for a free upgrade.

Regards, Clve


41
After several years of waiting FUNKE are ready to make upgrades to their Transponders. I believe this will meet the required SIL level to be more recognised by other aircraft EC systems, seems the ETSO isn't 'yet' available but I read this and from the info above that it maybe coming.

See: https://www.funkeavionics.de/service/reperaturen-upgrades/
From the above page:
Important note for ADS-B upgrades: A new firmware / software is available which now makes the ADS-B transmissions of the transponder conform to the RTCA DO-260B standard. Approval of this function according to ETSO-C166b is NOT yet available.
This upgrade is free of charge for devices from S / N 30860816 (delivered from March 2016). For devices from S / N 30580611 to S / N 30860816 (delivered between November 2011 and March 2016), the repair fee applies from MOD11. Devices shipped before November 2011 cannot be upgraded. In this case, we would be happy to offer you a special discount on a new device with simultaneous disposal of the old device.

Fees are €299 or €399 depending on how old your unit is. If it was delivered after March 2016 it maybe free.
I sent mine back recently but due to some confusion it turned out that it wasn't in the serial number band for upgrade (too old), they did however give me a good discount on a new fully compliant one. I had some protracted dealing with them over the years as I was waiting for them to give me the OK for the upgrade and they were very helpful and communications swift. The shipping in and out of the EU was less smooth.
BEFORE SENDING YOUR TXP OFF make sure you check in with them as they will give you info to put on the parcel to smooth it's way through German Customs.
Hope this helps a few of you with the units in the correct serial number band to make yourselves more visible, Regards, Clive

42
Technical Support / Re: Vector shows PAW but not ADS-B signals
« on: April 01, 2021, 11:25:33 am »
Hi Chris,

I have just had another look at your PAW install pics and video on the RV thread (very neat installation BTW - which undoubtedly accounts for your excellent PilotAware transmission performance). The pics and video however also confirm my suspicion that your transponder/ADSB Out antenna (the Narco blade-type one) is IMO poorly positioned just inboard of your right-hand undercarriage leg, where it will be significantly screened to the right-hand side by the leg, fairing and wing and also to the front-left by the exhaust/cowling (as borne out by your 1090MHz Vector plots).

Best Regards

Peter

Hi Chaps, just reading this thread and was interested in any recommendation you could make on what to do with my Transponder antenna position. I read the comment above ref the positioning of the Narco antenna and that is exactly where I have mine, also seeing some blanking from what I assumew is the U/C legs/wings.

Where on a metal low wing aircraft (mines an RV9) is the best place to permanently install the antennas?

I have the three underneath, PAW in and out are currently in a temporary position in the wing root fairings, TXP in the 'standard' RV position.

Thanks Regards, Clive

43
General Discussion / Re: Release notes for latest version.
« on: October 22, 2020, 10:14:47 am »
Had a fly around the same ground station and it does indeed change colour. After reading the updated explanation of why I noted what it was doing. What surprised me was I was flying just after a front passed through and was one of the few in the air locally, it was still changing colour though.
I shall continue to observe with interest.
Thanks for update Peter.
Regards, Clive

44
General Discussion / Re: Release notes for latest version.
« on: October 09, 2020, 11:00:44 am »
Thanks for the info, that's excellent. I have been trying to figure the blind spots on my installation and will giove 'seeing' the ground station a try to see what the receive is like.

Regards, Clive

45
General Discussion / Re: Release notes for latest version.
« on: October 07, 2020, 11:29:56 pm »
Quick question: Flew today with the new version, what's the red tower looking thing on the SkyD screen?

Good work by all, many thanks, especially like the updater app.

Regards, Clive

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