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Technical Support / Re: 1090 Sensitivity
« on: April 12, 2022, 10:00:16 am »
Thank you. I’ll see what arrives from PAW.
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Technical Support / 1090 Sensitivity
« on: April 08, 2022, 09:21:48 am »
Hi
My, less that one-year-old Rosetta has recently become deaf to traffic on 1090. It didn’t used to be. Strangely, my old Classic became similarly afflicted when I tried to use it for testing other aircraft.
I think the problem in each case is the 1090 dongle. I have ordered a new one for the Rosetta and await its delivery.
A question. To get around the lack of testing capability, I used the ‘Getyourwings’ tester, using a Noolec Nano 2 dongle. It worked a treat. At one point we had 41 aircraft visible, although I did note that the RF gain was selected to max. Can this dongle be used with PAW? These devices do seem to be quite generic, and I did wonder after I had bought it.
Thanks.
My, less that one-year-old Rosetta has recently become deaf to traffic on 1090. It didn’t used to be. Strangely, my old Classic became similarly afflicted when I tried to use it for testing other aircraft.
I think the problem in each case is the 1090 dongle. I have ordered a new one for the Rosetta and await its delivery.
A question. To get around the lack of testing capability, I used the ‘Getyourwings’ tester, using a Noolec Nano 2 dongle. It worked a treat. At one point we had 41 aircraft visible, although I did note that the RF gain was selected to max. Can this dongle be used with PAW? These devices do seem to be quite generic, and I did wonder after I had bought it.
Thanks.
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General Discussion / Re: External antenna reccomendation?
« on: December 03, 2018, 07:00:08 pm »
Final post from me on this subject....
I've flown a couple more times over the past few days.
30 minutes last Monday yielded 43 tracks. 50 minutes today 63.
Last Monday I got a traffic alert on an airliner 4km/2000' above - he was inside CAS, I was outside.
Today I got a traffic alert on another Cumbernauld-based light aircraft.
I have now seen and been alerted to traffic on both 1090MHz and 870Mhz.
I am delighted with the antenna's sensitivity. It is exceeding my expectations.
Incidentally, I believe that it is two half-wave dipoles mounted in a common body. Although it is mounted on a metal panel, there is no physical connection to it (unlike, say a TED) so it is not a quarter-wave unipole.
As I taxied in today, I received another traffic alert - '8 o'clock, same level, 240 metres'. The icon appeared on the apron at Cumbernauld, labelled 'Undefined'. After I shut down I went to investigate. It may have been another light aircraft moving away from the fuel pump. Looking through the .TRK file, the only candidate ICAO address is C13C3E which is, well.... undefined!
I am enjoying the post-flight 'plane-spotting', but I expect the novelty will soon wear off. ;-D
I've flown a couple more times over the past few days.
30 minutes last Monday yielded 43 tracks. 50 minutes today 63.
Last Monday I got a traffic alert on an airliner 4km/2000' above - he was inside CAS, I was outside.
Today I got a traffic alert on another Cumbernauld-based light aircraft.
I have now seen and been alerted to traffic on both 1090MHz and 870Mhz.
I am delighted with the antenna's sensitivity. It is exceeding my expectations.
Incidentally, I believe that it is two half-wave dipoles mounted in a common body. Although it is mounted on a metal panel, there is no physical connection to it (unlike, say a TED) so it is not a quarter-wave unipole.
As I taxied in today, I received another traffic alert - '8 o'clock, same level, 240 metres'. The icon appeared on the apron at Cumbernauld, labelled 'Undefined'. After I shut down I went to investigate. It may have been another light aircraft moving away from the fuel pump. Looking through the .TRK file, the only candidate ICAO address is C13C3E which is, well.... undefined!
I am enjoying the post-flight 'plane-spotting', but I expect the novelty will soon wear off. ;-D
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General Discussion / Re: External antenna reccomendation?
« on: November 24, 2018, 05:02:53 pm »
Second PAW flight for India Delta today. A few observations:
1. The external antennae arrangement seems to be working well - 44 contacts today in 30 minutes at 1500'.
2. My first traffic alert, with an 870MHz Sports Cruiser 12 o'clock, 400' above. Seen well outside 9km on the SD screen. Reported and tracked sensibly throughout.
3. The aircraft is also Cumbernauld-based and re-appeared as traffic on the way back to the airfield.
4. I spoke to the pilot and he had seen our second meeting on PAW, but not our first. I am using ADS-B OUT, so perhaps my engine was masking transmission from my belly antenna.
5. In the .TRK file, his callsign sometimes appears as his registration, sometimes as his registration bracketed by '#' characters. Is there any significance to this?
6. Only other item of note is that ICAO 24-bit addresses 400613 and 400E13 were in the vicinity at the time and they have got muddled on occasion - they only differ by a single bit. I'm not particularly bothered, one is a BA 747, the other an EZY Airbus.
I was very impressed by the traffic alerting - it was ages before I spotted the aircraft visually even though I knew exactly where to look.
1. The external antennae arrangement seems to be working well - 44 contacts today in 30 minutes at 1500'.
2. My first traffic alert, with an 870MHz Sports Cruiser 12 o'clock, 400' above. Seen well outside 9km on the SD screen. Reported and tracked sensibly throughout.
3. The aircraft is also Cumbernauld-based and re-appeared as traffic on the way back to the airfield.
4. I spoke to the pilot and he had seen our second meeting on PAW, but not our first. I am using ADS-B OUT, so perhaps my engine was masking transmission from my belly antenna.
5. In the .TRK file, his callsign sometimes appears as his registration, sometimes as his registration bracketed by '#' characters. Is there any significance to this?
6. Only other item of note is that ICAO 24-bit addresses 400613 and 400E13 were in the vicinity at the time and they have got muddled on occasion - they only differ by a single bit. I'm not particularly bothered, one is a BA 747, the other an EZY Airbus.
I was very impressed by the traffic alerting - it was ages before I spotted the aircraft visually even though I knew exactly where to look.
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General Discussion / Re: External antenna reccomendation?
« on: November 06, 2018, 12:21:50 pm »
I’m happy to do a bit of the leg-work if I can be of any help ease the load a bit. (32 years as a NATS Engineer)
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General Discussion / Re: External antenna reccomendation?
« on: November 05, 2018, 11:30:47 pm »
Thanks for the replies - really useful info. Next time we get some decent weather at the weekend I’ll head east-ish and see if I can bag some 869MHz traffic.
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General Discussion / Re: External antenna reccomendation?
« on: November 05, 2018, 07:13:33 pm »
Just did a quick analysis of the TRK file from my trip last Thursday, and counted 51 contacts - mainly airliners but including a C152, a Cirrus, a Beech 200 ambulance out of Glasgow and an Italian Air Force maritime patrol aircraft - not a bad haul for 30 minutes at 2000' on a quite midweek lunchtime in Central Scotland! I checked that each recorded aircraft was actually in my neck of the woods at the right sort of time using Flight Radar 24, which has given me a lot of confidence that I am looking at broadly the right things.
They are all 1090MHz though, and I would really like to see some 869MHz contacts. I was planning to head over towards Balado today to see if I could bag a glider or two out of Portmoak on the re-broadcast system, but the weather beat me. Maybe later in the week.
I was winging it a bit decoding the TRK file using Excel and a bit of previous experience. Is there a specification for the file's content that I could get a copy of?
They are all 1090MHz though, and I would really like to see some 869MHz contacts. I was planning to head over towards Balado today to see if I could bag a glider or two out of Portmoak on the re-broadcast system, but the weather beat me. Maybe later in the week.
I was winging it a bit decoding the TRK file using Excel and a bit of previous experience. Is there a specification for the file's content that I could get a copy of?
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General Discussion / Re: External antenna reccomendation?
« on: November 03, 2018, 10:02:17 am »
Will do.
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General Discussion / Re: External antenna reccomendation?
« on: November 03, 2018, 12:22:52 am »
I think that it is two distinct aerials in a single assembly. Each has its own individual feeder.
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General Discussion / Re: External antenna reccomendation?
« on: November 02, 2018, 03:37:44 pm »
Hi Lee
I haven't looked into the detail of how they are tuned, but there are a number of companies offering this type of aerial, and there is more than one profile.
I suggest that you contact Adrian Badland and ask him how it is done - https://www.badland.co.uk/
I suspect that the elements are tuned to length somehow prior to being encapsulated within the outer cover, but that is just a guess.
During testing we demonstrated reception of ADS-B traffic and reception/transmission on the P3i frequency (869.5MHz?)
Hope this helps
Dave
I haven't looked into the detail of how they are tuned, but there are a number of companies offering this type of aerial, and there is more than one profile.
I suggest that you contact Adrian Badland and ask him how it is done - https://www.badland.co.uk/
I suspect that the elements are tuned to length somehow prior to being encapsulated within the outer cover, but that is just a guess.
During testing we demonstrated reception of ADS-B traffic and reception/transmission on the P3i frequency (869.5MHz?)
Hope this helps
Dave
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General Discussion / Re: External antenna reccomendation?
« on: November 02, 2018, 10:44:27 am »
I flew G-BIID with PAW for the first time yesterday. For the external antenna I have gone for a custom-built, dual frequency (1090MHz and P3i) MIMOCONE from Badland of Stourbridge. It cost about £60 including feeders and tails to my specification. It seems to work very well although it is early days. I have attached a picture of the installation on the starboard tank cover.
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Technical Support / Re: Magnet inside GPS Mouse
« on: September 22, 2018, 04:33:25 pm »
Thanks. That’s what I hoped the solution would be. 
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Technical Support / Magnet inside GPS Mouse
« on: September 22, 2018, 03:24:03 pm »
Just building up to installing Pilot Aware in my Super Cub during the next couple of months. Was planning to mount the GPS Mouse centrally on the coaming, just behind the windscreen. I have just noticed today that the GPS Mouse contains a magnet, which is annoying as this location is not far from the compass. Has anyone managed to remove the magnet from a Pilot Aware GPS Mouse? There is a video on You-Tube showing how to do it on a different type of GPS Mouse. I’ll need to find a resolution to this because it is not going into the aeroplane like that. Thanks.
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