Messages

76

Technical Support / Re: Lenovo Tab3 7 connection problem

« on: December 28, 2017, 10:47:56 pm »

Not one that isn't in airplane mode.

For me this has only manifested in the latest release of pilotaware software.

77

Technical Support / Re: Lenovo Tab3 7 connection problem

« on: December 28, 2017, 07:14:06 pm »

I can eliminate Iphones as being the cause of the problem as far as I am concerned as we do not have such a device in the house! 

78

Technical Support / Re: Lenovo Tab3 7 connection problem

« on: December 09, 2017, 12:04:53 pm »

1. PilotAware Version 20170721
2. RPI OS Version  Model B Pi2, Kernel=4.9.35-v7+
3. WiFi Mode B  (G seems to make no difference to me)
4. WiFi Channel 9
4. WiFi Power ..Tried all!
5. Home Wifi on Channel 1

79

Technical Support / Re: Lenovo Tab3 7 connection problem

« on: December 08, 2017, 08:25:06 am »

Just to confirm that I do also get disconnects in FLARM (TCP) mode, tho far less frequent.

And, like above this has only manifested since the Pi kernel 4 update.

80

Technical Support / Re: Lenovo Tab3 7 connection problem

« on: December 07, 2017, 10:42:36 pm »

Hi Lee, from left to right..

Huawei P9, Android 7.0
Lenovo Tab 3 8, Android 6.0
Nexus 7 v1, Android 4.4.4 Cyanogenmod 11.0

I'll try repeating with TCP over the weekend and report back.

81

Technical Support / Re: SOLVED: Lenovo Tab3 7 connection problem

« on: December 07, 2017, 05:28:48 pm »

Yes Ian, I get the "waiting for device", just like the original poster.

Following on, I've installed a handy little App UDP Terminal  Which when connected to the PAW through WiFi allows me to see the UDP traffic.

I installed this on all three of my devices, Huawei P9 Phone, Original Nexus 7 2012 and the Lenovo Tab 8-3. When set to listen on UDP, on the Nexus and the Phone, there are regular blocks of messages, on the Lenovo it is missing out messages, sometimes for quite a few seconds. This is surely the 'problem' in action.  The question is, why??

Watch this (rather awful and out of focus video, ) The Lenovo is in the middle  https://youtu.be/6JUc7hQXELc clearly it's missing a lot of data! All 3 were connected to the PAW, I changed the wifi connection on the RH Nexus while the UDP app was running so it was titled another SSID

Can a mod please remove the 'solved' from this thread title!

82

Technical Support / Re: SOLVED: Lenovo Tab3 7 connection problem

« on: December 07, 2017, 08:04:35 am »

Watching this thread with interest as I'm still having issues with my Lenovo Tab 3-8 and the latest PAW release. Not just in UDP where the disconnects are measured in seconds but less frequently in FLARM mode too. Strangely though, the last time I flew, my mate connected with his Lenovo Tab 3-7 and that was fine!  Perhaps there's another app I am using that is doing strange things?

Every red dot in this plot corresponds with a disconnect of the UDP...



Oddy, when I connect to PAW on the ground it is not as easy to replicate the problem!

I've even re-fired up my original Nexus 7 with a very stripped down Android build to try next time I fly to absolutely confirm it's not the PAW.

On the good side, we have recently upgraded the comms panel in the C172 with a PAR200A combined comms panel /8.33KHz transceiver which has bluetooth. Hanging a £10 bluetooth transmitter dongle into the audio socket of the PAW, pairing is flawless and the audio alerts are now wirelessly fed into the aircraft comms. 

Just found an app for android called UDP sender / Receiver with which I'll have an experiment later today.

83

General Discussion / Re: New release-20170619

« on: September 03, 2017, 08:27:01 pm »

Messing about with this over the afternoon the issue seemed to have completely disappeared after I dynamically increased the WiFi power a few times , with the UDP connection being completely stable. An hour later, including a 45 minute complete power down of everything to also let them cool, it returned after around ten more minutes stability.  ..I'm discounting heat as being the cause therefore.

While the UDP is losing connection, I also have trouble connecting to the PAW through the browser with a "HTTP request method not supported" message.

One thing that is really bugging me though, I can't clear an IP address from the Static IP Address field. I don't use Static IP addressing from DHCP but I have set a reserved address in the router to assign with the MAC address of the PAW (one I can remember ..192.168.1.172). This address appears in the static address field of the PAW and it can't be blanked...

   This still appears even when only connected wirelessly..Is this 'normal' / Could it be the cause of the problems I am experiencing?

I have once again dynamically changed the Wifi power (up from 20mw to 50 Mw this time) and the UDP connection in SD is stable once more!  Weird

Vic

84

General Discussion / Re: New release-20170619

« on: September 03, 2017, 03:54:52 pm »

I have the same tablet as Roger above (Lenovo Tab 8-3, one of the few Android tablets to have GPS nowadays) which I bought to replace my ageing Nexus 7 2012 which kept dropping the Wifi connection when too close to the PAW.

All was well with PAW and this new tablet running Skydemon until the last two releases of PAW software. The device now occasionally disconnects (every 5 or so mins) if I use FLARM mode and frequently disconnects (every 10 seconds at least) if I use Piotaware (UDP) mode.  As Roger says, the auto reconnect works fine

I have tried different WiFi power settings and changed from Mode G to B to no avail and disabled the tablet's  'advanced' feature of notifying whenever a public wifi internet connection is available, making me suspect it was sniffing around for other connections and missing UDP packets out. .. The problem still existed on my last flight however... This log clip of my 50 minute flight shows everytime it happens by means of a red dot on the height view of the log...



Curiously, the 'Waiting for device' keeps coming up when I replay the track recording from the paw using the Lenovo but not on my phone sitting next to it!

It's looking like therefore a quirk of the popular Lenovo tablet with the latest versions of Pilotaware!

85

General Discussion / UK CAA opts for ADS-B as preferred GA tool. SURVEY

« on: August 26, 2017, 03:59:22 pm »

UK CAA opts for ADS-B as preferred GA tool

To help encourage ADS-B take-up by the GA community, the CAA is launching a survey seeking information on the types of devices private pilots already use and what they would prefer to use in future.

86

General Discussion / Re: Tuning the DVB Antenna for 1090MHz Specific reception

« on: December 05, 2016, 01:00:57 pm »

Hi Allan, sorry for the delay in getting back.

Yes, the whole antenna starts from where the braiding of the Coaxial cable stops covering the inner conductor. Everything from there onwards forms part of the resonant length of the antenna. Think of it as blowing across the top of a bottle and adding water to get a note you want only we are doing it with radio waves.

However, the perfect antenna relies on a clear area of space around it in all directions and we'll never get that anyway inside a light aircraft. You will  perfectly fine with what you have there and may, from experience, even have to adjust the sensitivity down in the PAW settings.

Probably more important than all this is to solder the braiding down to the base disc of the antenna.

87

General Discussion / Tragic News

« on: December 04, 2016, 06:41:27 pm »

very sad...clearly we don't know the circumstances of this but it is another that will no doubt provoke discussion here.

Glider pilot dies in mid-air crash in Leicestershire

A glider pilot has died in a mid-air collision between a glider and a light aircraft.

88

General Discussion / Re: PUK Antenna

« on: September 10, 2016, 08:16:51 am »

I wonder if it contains one of these? http://www.ebay.co.uk/itm/JOHANSON-TECHNOLOGY-0868AT43A0020E-ANTENNA-CERAMIC-868MHZ-/391150014621

Intriguing little devices.

89

General Discussion / Re: Odd Mode-C traffic

« on: September 07, 2016, 03:01:56 pm »

Lee

Under ICAO DOC 4444 the only internationally reserved squawk codes are 7500 7600 and 7700.  State governments then deal with allocation of all the other codes.

Found this which might be helpful

http://www.flightradars.eu/squawkcodes.html

90

General Discussion / Re: Odd Mode-C traffic

« on: September 06, 2016, 06:46:38 pm »

Radar Site Monitors are located close to a ground radar's antenna and are integral to the radars own internal monitoring. They are set up to simulate a specific target and have inbuilt responding delays to appear as a stationary SSR target close to the edge of the radar heads usable range. They usually squawk Mode A 7777 and Mode C of over 70,000ft.

Their appearance to the radar is internally monitored and they have executive functions to switch off the radar if errors are identified.

http://www.radartutorial.eu/17.bauteile/bt16.en.html