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Messages - Robski

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Technical Support / Re: Altimetry oddities
« on: February 24, 2019, 07:57:37 am »
If you could hover (I'm a rotary pilot) then I suspect it would be spot on.
In a hover wouldn't the whole area under the rotor disc be a high pressure area?

The tablet headphone to Trig aux should work but one thing I found in a similar installation was earth loop issues.
This manifested itself as unacceptable noise on the audio when the tablet was being run / charged from plane power. Run the tablet on its internal battery - no noise. Connect to mains - noise.

Just something to be aware of and test for.
It is possible those nice people at Trig have put an isolating transformer on the aux in to avoid this sort of issue.

Technical Support / Low power SDR
« on: February 24, 2019, 07:27:48 am »
I have a very early home-brewed PAW, subsequently 'bridged' and 'pi2b'ed'.

Works well but the dvb / ADSB dongle has always run hot. I would guess the new low power ones don't. Can I swap to one of these, or is there an alternative (commercial sdr dongle) option?
My PAW is installed with some external antennas so I don't think I need to do a wholesale rosetta upgrade.

General Discussion / Re: Transponders and ADSB beacons.
« on: February 23, 2019, 08:35:19 pm »
Thanks for the clarification.

General Discussion / Transponders and ADSB beacons.
« on: February 23, 2019, 09:26:29 am »
Is it still the case that an aircraft can legally only have one 1090Mhz device operating at a time?

Does that mean that you cannot have an ADSB-out device (like the SkyEcho2) and a transponder on at the same time?

With the new rule that if you have a serviceable transponder fitted you are obliged to turn it on, does this mean you cannot legally use a SkyEcho2 (or similar) in a transponder equipped aircraft?

Where does that leave Ian Fraser's testing in his recent LAA article (advertainment?) seeing as he said he has a mode S transponder in his aircraft? Presumably he applied for and was granted an exception as he states “Transponders not the subject of our test were switched off“.

General Discussion / Re: don´t save Config
« on: February 19, 2019, 05:54:23 pm »
 If you can't save a config without a license then how do you enter a new license key?  :o  ???

General Discussion / Re: Pi 3B+
« on: February 15, 2019, 06:08:39 am »
I only consider an OS issue as a possibility as the pi never gets an orderly (init 0) shutdown so it may have been mid—write when the power was pulled, or something along those lines... The raspbian installation did date from when I home built the pre-shield PAW as well so an update was probably overdue anyway.
I do think this is a less likely option than the hardware one.

I will look into the pi3B+ option while retaining the pi2B as a fallback position.

General Discussion / Pi 3B+
« on: February 14, 2019, 08:44:16 am »
Any news on whether the Pi3B+ is usable for pilotaware yet?

Is it just untested for PAW so cannot be recommended  ;) , or will it definitely not work  :(?

I have an original home-brewed setup,  subsequently 'bridged' and then 'Pi2B'ed etc.  I have recently been suffering the dreaded PAW / SD disconnects as have a number of chums so I am looking for a solution. A full image reinstall has been done as a first step but not tested yet. Just lining up other options, to whit: replacing the wifi dongle or 'Pi3B'ing the setup (which has the wifi built in).
The latter option was suggested at a PAW presentation, but I am skeptical as PAW ran faultlessly on the latest software from may to september and only then started playing up, which to me suggests an OS or hardware issue.

General Discussion / Re: Funke TRT800H and PilotAware
« on: February 13, 2018, 11:45:05 am »
Does anyone know if the Funke only transmits ADS-B when it is being interrogated.
Good question. I have wondered about this for all S/ADS-B transponders.

Will an ADS-B signal get transmitted in the absence of an SSR interrogation?
If so how long after the final interrogation does an 'ADS-B only' transmission get made?

General Discussion / Re: Feb 2018 Light Aviation mag EC article
« on: February 10, 2018, 01:14:00 pm »
To avoid confusion I have no involvement in the post in the LAA Magazine.

Thanks EricC
Neither have I.

Nor do I have any axe to grind. Brian Hope, the magazine editor, is doing an excellent job in the face of widespead indifference and apathy.

General Discussion / Re: Recommended Power supply?
« on: February 10, 2018, 01:08:58 pm »
I tried something similar to run Skydemon / Nexus 7 tablet in the RV6 a few years back but found it to be very noisy and made a dreadful earth loop when trying to hook the audio alerts from the tablet to the headsets.

Hope you have better luck.

General Discussion / Feb 2018 Light Aviation mag EC article
« on: February 07, 2018, 10:31:40 pm »
Anybody else read the article?

The author comes across as a bit odd - doing lots of 'research' to justify doing nothing.

His gripe about installing a mode S transponder but not really knowing why seems telling....

He seemed to keep harping on about his RV-6 as well. PAW works surprisingly well in mine for such a low powered device inside a partial Faraday cage. The fact that the PAW unit costs less than filling his RV up with Avgas didn't get a mention but he kept mentioning the 250 quid for the ADS-B out / CAP1391 unit.

Keep up the good work, Lee & co - we appreciate your efforts  ;D

General Discussion / Re: Recommended Power supply?
« on: February 05, 2018, 11:28:58 am »
Thanks for the links, Paul.

I wasn't meaning to denigrate the ChargeN devices, just point out that they are overkill for a permit aircraft when an Anker unit works very well.

Found a solution now - made a very secure 'fag lighter socket' to shove an Anker Power 2 in.

General Discussion / Re: Recommended Power supply?
« on: February 03, 2018, 09:56:30 am »
The Anker unit is not a cheapo Chinese noise box - it is a well manufactured high output current USB supply from a US company. They are very good and at a fraction of the price of the ChargeN devices were a lot of people's USB supply of choice.

They seem to have discontinued it in favour of all-in-one plug-in ones. I have one of them for the car, and very good it is too, but fag lighter plugs always rattle loose in a plane in my experience, especially with 3 20AWG USB cables hanging out of them.

If all else fails I may have to tear an 'all-in-one' Anker apart to make a 'wire-in'able one.

General Discussion / Re: Why no 'Shutdown' button?
« on: February 03, 2018, 07:21:39 am »
And when doing an update, presumably...  ;D

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