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« on: January 12, 2019, 12:37:09 pm »
Many thanks first to those on here who helped me distinguish between the micro SD card and SD card adaptor in my previous post - not entirely obvious to someone who is not tech savvy like myself!
Yesterday I had the opportunity to try out my new rosetta 'in anger' (as it were) in a flight from my home base at Denham to Turweston. The unit was wifi'd to my iPad running SD and my iPhone (5S) running PAW Radar. Settings for bearingless contacts were short range and +/- 1000'.
I have some issues/questions as a result of this first flight which I'd be hugely grateful for help with!
1. Despite the fact that I had bearingless switched on in SD and also enabled (with Mode C/S filter) in PAW, a number of relatively close Mode S/C transponding contacts were not picked up. Talking to Oxford Radar, for instance, there was one near Rugby which was 5kms away and within 500 feet which I confirmed with Oxford was transponding with altitude Nothing was seen on the cockpit display(s) however. Could that be because 'short-range' is actually too short - even at 5kms?
2. I had a real issue with the fact that traffic distance in PAW Radar and in audio warning configurations is given in KM and NM. This makes no sense at all and could be quite confusing just when things get most busy. KM is used typically for visibility. NM is always used for traffic distance on an ATC radar service (and is also used in SD running PAW). With potentially quite a lot of data being displayed in the cockpit, why on earth complicate matters by making it necessary to perform mental calculations as to a target's distance? PLEASE in a software update can we have the display ranges - and audio alert ranges - in NM and not kilometres???
3. Given the bearingless settings I configured in PAW (as above) I could not understand what the criteria were for the different levels of alert (green, amber, red). Are they based on the target's transponding power or vertical distance from my aircraft or both? Does a red 'danger' alert, for instance, depend on the configuration settings? If one chose +/- 50,000', to take an example, would you get a red alert at, say, 1000 feet separation from a target, but if you chose, +/- 500 ft you would only get that red alert at, say, 100 ft? Because I don't know, I also don't know how much to worry - or how high (or low) in the sky to scan.
4. On my iPhone displaying PAW Radar the GS-OGN-1 banner goes slap over the vertical distance selected figure - so I couldn't see what I had selected or therefore change it (please see my attached photo).
5. On the same display an amber alert of traffic has its vertical distance figure almost completely hidden by the graphic of what looks like an aerial. Are these aerials OGN base stations? Is it just coincidence that it happens to be sitting at the centre of my aircraft or is this something else? Perhaps more worryingly, given the relative proximity of the traffic, this was potentially 'challenging' situation since I could not clearly see the vertical distance of the other target.
6. I also think the graphics identifying the up/down/level of other traffic is far too faint and not easily seen. One has to keep remembering that this is a busy cockpit environment, not an office desk, and you need to spend as little time as possible looking at the radar screen!
7. Can someone also actually tell me what GS-OGN 1 actually means? OGN is the Open Glider Network and I believe 1 means 1 base station - but GS? I can't find the answer to that one in any of the manuals.
8. Finally, though this might be a SD question, I kept getting my own transponder as a target even though I had set the HEX correctly both in PAW and on SD in the aircraft edit page. Anyone have an explanation? It got so annoying that I ended up switching it off.
So - these are my questions after my first flight. Have no doubt that PAW is going to be a great boon in time but I need to work through these wiggles first! Perhaps others have had similar issues?
If anyone can supply any answers to the above I will gladly buy him or her a decent drink! I really want to get this right.
Thanks!
Stodge