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Author Topic: FPV in IRL  (Read 114256 times)

kankrz

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« Reply #15 on: April 30, 2010, 04:21:21 AM »
900/1800 MHz band is used by cell phones. I wouldn't go this way..
I don't want to write my next post from behind the bars :)
2.4G and 10mW ... maybe a little bit more :)

Another alternative is 440MHz for video. Advantage of this system is that it would be possible to fly with company of 2.4G and 35 MHz RC transmitters. I found the webside with very tiny TX.
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lakelands

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« Reply #16 on: May 03, 2010, 15:45:25 PM »
Hi,
I'm interested in hearing a bit more about the frequencies available to use for FPV. My understanding is that frequencies in the 1.2Ghz range are also quite popular in europe and looking at this recent Comreg doc it looks like there is some scope for usage. Caveat being I presume that you must be HAM licensed to use these frequencies (and probably not allowed from a moving transmitter now that I think of it). Any comments?
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Happy Days

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« Reply #17 on: May 03, 2010, 17:44:20 PM »
Well, interesting point Lakelands. :?:

I believe Ham, (Amateur Radio) licences do allow for mobile use of transmitting equipment. However to use amateur radio equipment onboard an aircraft, know as operating as ‘Aeronautical Mobile,’ you must first have permission from the ‘Pilot in Command’ which presumably would be yourself. :wink:  

So on that basis you probably could use you own equipment,………..provided, as you say, that you first have an amateur radio licence to use the band, and be sure that the type of video signal you want to transmit is allowed within that band. :!:

That’s a lot of studying just to get a video downlink. :shock:
Phew!!

K.
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lakelands

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« Reply #18 on: May 03, 2010, 19:40:10 PM »
Time to get out the study books so!  :lol:

In the states the course for a license is apparently easy enough with lots of sample questions and self tests available. I think the irish one is a bit more demanding. I am seriously tempted to do some *practical* experiments first  :D .
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Happy Days

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« Reply #19 on: May 03, 2010, 19:55:21 PM »
Not that I would ever advocate the illegal use of radio transmitting apparatus! :shock:  But bearing in mind the very limited Effective Radiated Power of most low cost/light weight video Tx, I very much doubt anyone else in Ireland would ever know you were using it, much less track down the source of the transmissions’ and prosecute you.

(Unless you were flying near a densely populated housing/industrial area)
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lakelands

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« Reply #20 on: May 03, 2010, 20:06:59 PM »
I was looking into a few of those Fox based AV tx/rx combos which seem to be good value for money, are available in a wide power range (I would stick to low power versions) and have had generally positive reviews. As you said if you keep away from population areas I think you would pose very little interference impact. I think I'll delve a little deeper   8)  

On a related note I have seen very few FPV videos from Ireland (perhaps I am looking in the wrong places) are there any in existance?
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kankrz

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« Reply #21 on: May 03, 2010, 23:42:20 PM »
It looks like game is not worthy the candle. All this hassle with licence, then equipment for more then 1k $ , everything just to try the new toy - I am not sure. If someone wants to be very legal must not excite 25 mW for 5.8G transmitter. It is enough to reach 100m range (using quite expensive devices). On the other hand , I found report about 400m range on the ground with the same power and band. 300-500m is the range what I  look for.
And two words about 'being legal' :  Many people buy/import 5.8G AV links to transmit video from room to room , to look after a baby , to see who knocks to door. Most of them don't even know what they use. Intensity of electromagnetic field   decreases proportionally to R^4 (R - distance between aerials) ... so this kind of occasional transmission (25mW), far from the cities and people aggregations would be hard to track , but most important : the chance that it would  flood or interference other signal is very little.
Common sense is needed.
To be save : don't use 0.9 ; 1.2 ; 1.3 ; 2.4 GHz.
A few days ago I found an interesting website (not mine :) ) with 5.8G devices , reportedly very good but... prices , uff.
http://www.iftrontech.com/index.html

best regards - Krzysztof
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JJ

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« Reply #22 on: June 30, 2010, 21:16:59 PM »
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JJ

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« Reply #23 on: June 30, 2010, 21:18:34 PM »
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IceWind

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« Reply #24 on: July 01, 2010, 10:10:37 AM »
Nice... someone is using a gumcam/keychain. :)

I've a SlowStick ready to be built with all the extra gear ready for AP&FPV.

For when a AP&FPV meeting in IE? :)
Is there anymore passionated people for filming from the skies?
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Fred

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« Reply #25 on: July 01, 2010, 11:29:46 AM »
Hey Nando,

I'm equiped, but the videos from the sky, like that, are in my opinion the most boring aeromodeling videos ever !

Good to have 30 secs of it in a video, but a full lengh  :!:

My own opinion of course   :P

I'll post one of mine later if I have 2 minutes  :D


By the way, anyone interrested in a FPV/Aerial video/photo section on the forum ?  :?:
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Fred

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« Reply #26 on: July 01, 2010, 13:12:30 PM »
A quick one... Taken when I was in Britany.

http://www.gliderireland.net/images/videos/onboardbritany.wmv

Sorry for the quality, did that really quickly!  :?
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Fred

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« Reply #27 on: July 01, 2010, 13:25:31 PM »
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IceWind

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« Reply #28 on: July 01, 2010, 14:20:53 PM »
Aha!

Do you want to see my full collection of several years of AP?
All in one go... be careful if you live higher than the second floor as you might want to jump over the window... :D

True, AP or FPV footage unedited is extremely boring. I do suffer from that as I'm usually very lazy to edit them and allow that long parts of video to stay.
I believe that the ideal is to have small snippets in total making 2 to 3min and a good sound track.

Nowadays with the cheap cams I've seen some really cool ones combining different angles.

But usually the video are 10x more interesting to the person that was flying and did it than to the rest.

And now let me check you're videos. ;)
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IceWind

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« Reply #29 on: July 01, 2010, 14:32:15 PM »
Hey I liked the videos.

But I'm crazy about AP and FPV. :)

Btw i leave here a video of cool things that can be done.

[youtube]http://youtube.com/v/wrvAMyobsAw[/youtube]
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