Intermittent Operation

twolimatango · May 26, 2011, 08:22:30 PM

I have been running ANRB with good results for weeks now - 200+ targets but today....NOTHING. USB light is flashing at me signal light is inactive. Have tried everything i can think of to rectify this. Changed Antenna from External to stock antenna, re-installed drivers and software and still the flashing USB light. RB says Hardware connected and reports firmware status. Totally stumped - any suggestions? Am i looking at a dead radarbox or minimum sending it back for checking out?

twolimatango · May 26, 2011, 08:26:02 PM

Intermittent because I have had this a few times but normally clears if I unplug the box and restart

CoastGuardJon · May 26, 2011, 10:12:53 PM

Hi 2LT, if it's an intermittent fault, I would suggest the RB is AOK, if it fails - it fails big-time, and the most you'll be receiving direct is aircraft within a very few miles of you, probably 30nm radius at best. If intermittent, far more likely to be a USB problem, try changing lead for a known good HQ one, and check that USB sockets appear to be firmly fastened to pcbs inside PC and RB.

AirNav Support · May 26, 2011, 10:18:43 PM

As CoastGuardJob says we would advise checking the USB cable first. We have sent you the return instructions if after using another cable its still the same.

twolimatango · May 27, 2011, 08:28:13 AM

Thanks - I have tried replacing the USB cable and still the same. I'm near to W&S so will pop into Hockley today to get a their opinion.

oldun · May 28, 2011, 11:05:57 AM

hi twolima did you get any joy from w&s because mine is doing the same thanks jeff.

twolimatango · May 28, 2011, 11:09:05 AM

Quote from: oldun on May 28, 2011, 11:05:57 AM
hi twolima did you get any joy from w&s because mine is doing the same thanks jeff.

Its been booked in for someone to take a look at. So.....have to wait and see.

oldun · May 28, 2011, 09:22:21 PM

ok thanks will you keep me informed please leff

twolimatango · June 10, 2011, 01:33:43 PM

Well..........its back from W&S but.......

They replaced the F1 filter (whatever that is). I have plugged it back in to the same setup I had before it went and I seem to have decreased range by approx 40 miles in the new polar diagram. It has only been running an hour in fairness so i will leave it and see what happens after a few days running. Before and after plots attached.

twolimatango · June 10, 2011, 01:35:11 PM

before repair

bratters · June 10, 2011, 01:52:06 PM

That's an interesting post 2LT.

Going back maybe two years I had a couple of filter problems and on each occasion I noticed a range difference on the return of the box - one an improvement over standard performance, the other a detereoration.

Being non-tech I know absolutely nothing about filters however I would ask those who do whether these things are adjustable? Alternatively do they come with differing properties? Basically can a filter setting be adjusted for maximum/minimum response in any way and if so is there an optimum setting that maybe balances distance against the likelyhood of failure? Can these filters be tweaked ?

Runway 31 · June 10, 2011, 02:28:40 PM

Comparing a polar diagram before and after with only an hours operation for the after shot is pretty meaningless. How much running had it taken to get the original diagram, give it a while and then compare.

Alan

twolimatango · June 10, 2011, 02:45:45 PM

I'll give it a fair chance - a week should do it. Happy that its working though don't get me wrong.

twolimatango · June 17, 2011, 03:29:26 PM

Quote from: twolimatango on June 10, 2011, 02:45:45 PM
I'll give it a fair chance - a week should do it. Happy that its working though don't get me wrong.

So..its been running a week and here is a combined polar diagram - one from before repair and one after, shown on the same map. looks like I've lost a around 10 to 20% range. I think in 'MyFlights' I am down around 25% to 30% in the number of aircraft Was 200+ now 140 ish. I don't know that it can be improved but I'll ask at W&S as its kind of nulled out the advantage I gained from my new antenna.