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Messages - Gary Nelson

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OGN-R PilotAware / Re: OGN-R map query
« on: November 07, 2017, 01:31:15 pm »
...... A banner on the PilotAware RADAR screen indicates if and how many OGN-R station are being received. No banner means no reception.

Does this banner also appear on the Pilot Aware radar you get when only using Sky Demon?

OGN-R PilotAware / Re: OGN-R map query
« on: November 07, 2017, 10:26:48 am »
Thanks all:

1.      So looking at the OGN map with PW% (as I have pasted below) are you saying a Pilot Aware user flying over any area shaded green should be in range of a OGN-R ground station and will be sent position details of any glider/aircraft in the (same area?) using Flarm

2.      What are the criteria for what Flarm users are picked up in this way i.e in terms of distance - do they both have to be within the same OGN-R ground station?

3.      I have noticed when you go on the OGN Website you get the following key and what is the difference between the old stations and the 0.2.1 stations (I assume UP or DOWN simply means if currently functioning or not?: .....Blue icons represent UP old stations, Mauve ones DOWN. Green is 0.2.1 or above and UP, Red is DOWN new.

Technical Support / Re: Transponder interrogation query
« on: November 07, 2017, 01:31:48 am »
Thanks for helpful replies

OGN-R PilotAware / OGN-R map query
« on: November 06, 2017, 04:31:57 pm »
Is it possible to see graphically just the UK ground stations (I assume OGN-R) that Pilot Aware can actually receive secondary FLARM from. I saw on the Pilot Aware website that there is a link to the OGN range tool. This link advises to put "PW%" into "Show All". I thought I did this and got the graphic display that I have (hopefully) attached here. You will see it shows lots of green balloons and some red and purple ballooons and a couple of blue balloons

I couldn't readily work out which of these are transmitting the FLARM data to Pilot Aware and would be grateful if someone could clarify and also what each colour code means as the map doesn't seem to have a key on the side as to what each colour represents?


Thank both - very helpful

If a single plane is transmitting (1) Pi3 (2) Mode S and (3) ADS-B (likely uncertified ads-b)   then what would another Pilot Aware user see on their screen - presumably not 2 aircraft (pi3 + ads-b) and a proximity alert (mode s)

I couldn’t find this topic elsewhere and apologies if already covered

Technical Support / Transponder interrogation query
« on: October 29, 2017, 05:58:29 am »
If you are flyinging in an area outside say a LARS, does this mean transponders in other planes are not being interrogated and therefore silent,  so that Pilot Aware won't detect them  - or have I totally misunderstood this?

Secondly,  if  another plane is in the same area that has equipment to detect Mode C/S, will this  "wake-up" the the other transponders in the area, so I can then, in theory, detect them with my own Pilot Aware?

Technical Support / Re: Swamping aerial signal
« on: October 29, 2017, 05:42:52 am »
Thanks Peter - i think the P3i aerial will end up about 40cm away and the Ads-B about 75cm away so sounds ok and clearly more than the  27.5cm distance you refer to - but noted the further away (ignoring co-ax loss) the better


Technical Support / Swamping aerial signal
« on: October 24, 2017, 01:39:30 pm »
Are there any mimimum distances you really want to place  the P3i aerial and the ADSB aerial from an existing transponder aerial (obviously the more distance the better) and which one is more critical to keep away from the existing transponder aerial?

Thanks for replies to date. I have 2 existing jig holes under the Eurostar SL that would be good to use for the 2 pilot aware tuned stubby aerials. These are (very appox) 70cm and 40cm away from my existing Funke mode C/S transponder aerial. Re "swamping" risk, is 70cm sufficient distance for the Pilot Aware ADS-B/Mode C/S receive aerial and does it matter if the Pilot Aware P3i transmit/receive aerial will therefore then end up being only 40cm away from the Funke transponder aerial?

If I use the above referred jig holes, then the 2 Pilot Aware aerials will end up being about 75cm from each other


Can anyone recommend a good monopole whip aerial to maximise reception of proximity alerts of Mode C and Mode S.  I am intending to install the aerial below the aircraft pointing directly downwards. Also should it ideally be 68.9mm in length for 1090MHz?

I ask as looking at the forum messages there never seems an ADS-B reception issue but a fair number saying they feel they see far less Mode C or S alerts than they would have expected for the number of GA and light aircraft they see passing en route.

NB Pilot Aware sell a P3i stubby tuned monopole whip. It is currently out of stock. If it were in stock would it work as well for picking up Mode C or S even though tuned for P3i.


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