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Apr 26, 2012, 06:28 AM
Registered User
Discussion

detecting thermals


what do you know about telemetry for detecting thermals?
i have seen something with 'winged shadow'. has any1 tried it?
any other equipment?
should be interesting for all to hear about it.
or is there a thread on it already? where?
thanks
Last edited by phil alvirez; Apr 26, 2012 at 01:41 PM.
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Apr 26, 2012, 06:42 AM
turn, turn, turn.
I'd say that that sort of thing is a good learning aid.

I tried an Eagle Tree years ago... I could always tell I was in lift before I was notified.

Admittedly, I was always under 400 feet.
Way up high, it would probably be very useful for cross country flight.
Apr 26, 2012, 10:47 AM
FPV Desert Beta Test Center
I use one on my FPV Bird of Time with an ear bud speaker. The audio is picked up by an on-board mic and sent to my ground station. I also use a Range Video OSD which has a analog bario vario and the two are in perfect sync. For FPV thermaling an audio vario is IMO very helpful.

This is a recent clip.

http://tinyurl.com/7t37u3b
Last edited by Gary Evans; Apr 26, 2012 at 10:53 AM.
Apr 26, 2012, 11:11 AM
AMA 7224
Leadchucker's Avatar
Good heavens man, how do you listen to that for any amount of time? While I can appreciate it's job, that tone would drive me barking mad in short order. Nice ride none the less
Latest blog entry: Maxford Nieuport 17
Apr 26, 2012, 11:21 AM
FPV Desert Beta Test Center
Then you wouldn't like a real sailplane because that's the music of cross country thermaling.
The volume should be just high enough to hear.
Apr 26, 2012, 11:24 AM
TLAR Aviation
Harry D's Avatar
It would drive me "barking mad" too, in a few minutes.

And I've always thought it would be a bit like fishing with dynamite.

But it no doubt provides a useful function, and would be interesting to experience. To each his own.
Apr 26, 2012, 01:03 PM
Registered User

great advice


Quote:
Originally Posted by Gary Evans
I use one on my FPV Bird of Time with an ear bud speaker. The audio is picked up by an on-board mic and sent to my ground station. I also use a Range Video OSD which has a analog bario vario and the two are in perfect sync. For FPV thermaling an audio vario is IMO very helpful.

This is a recent clip.

http://tinyurl.com/7t37u3b
that's great. could you provide details? as many as you can.
everything you can throw in.
diagrams, sources.
of course, we can lower the volume to be barely heard
Apr 26, 2012, 01:30 PM
FPV Desert Beta Test Center
Quote:
Originally Posted by phil alvirez
that's great. could you provide details? as many as you can.
everything you can throw in.
diagrams, sources.
of course, we can lower the volume to be barely heard
The audio function is a recent addition to the vario. It originally was not intended for for FPV and would only wag the rudder upon entering lift. It generates a line level audio signal that can be turned on/off at the radio and can indicate either up only or up/down. It doesn't come with a speaker so you need to install your own. Being a line level signal only ear bid sized speakers can be driven without amplification. I already had an on-board mic to monitor engine run so just installed the ear bud speaker right next to the mic. It is only turned on during thermaling.
To receive the signal at a ground station requires an on-board Tx and ground station Rx/speaker which you would already have for FPV. If your not doing FPV it would not be very practical because of the added hardware. For non-FPV use the rudder wag would be the ticket. There are varios that can send down the signal to a special receiver but they are way more expensive.
Apr 26, 2012, 01:47 PM
Registered User

scout


thanks, Gary. very interesting.
i rather go for something like the thermal scout from winged shadow, with the circuit they suggest on the manual, and sends a sound very much like yours. it's here: http://www.wingedshadow.com/thermalscout.html
See the Data Output Mode Instruction Supplement for full details.

has any1 tried it?
Apr 26, 2012, 03:40 PM
FPV Desert Beta Test Center
Quote:
Originally Posted by phil alvirez
thanks, Gary. very interesting.
i rather go for something like the thermal scout from winged shadow, with the circuit they suggest on the manual, and sends a sound very much like yours. it's here: http://www.wingedshadow.com/thermalscout.html
See the Data Output Mode Instruction Supplement for full details.

has any1 tried it?
Sorry apparently I didn'take myself clear but that is the vario I'm using.
Apr 27, 2012, 01:14 PM
Foam flogger
I use the Thermal Scout. It does a pretty good job and I can see the wag at over 2000 ft agl. I haven't set it up yet to my telemetry module.
Apr 27, 2012, 01:39 PM
200 mph club
r/cmark's Avatar
Anyone else have oppions on the Thermal Scout ?
Apr 27, 2012, 02:56 PM
Registered User

Doo-doo-dee-dee........


Almost as bad as some of the crap they call "music", these days, but at least it is passing along some intelligence!
Apr 27, 2012, 03:24 PM
Registered User

kind of advice i needed


Quote:
Originally Posted by Belem
I use the Thermal Scout. It does a pretty good job and I can see the wag at over 2000 ft agl. I haven't set it up yet to my telemetry module.
thanks for your input.
i will get 1 and see if that is all that i need to catch-and stay in-a thermal.
Apr 27, 2012, 04:10 PM
Foam flogger
I know a couple of people here use them. Try this post in the Thermal section and you might get more hits. I find that it does a pretty good job signaling lift. Staying in it is another matter lol.


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