Sam.Dzharov Posted November 11, 2014 Share Posted November 11, 2014 Hello, I have an E-revo and I live in a big private park in Devon. I wanted to explore some of the woods around in my park. It's a private park and I can easily get a permission from the land-owner to use any kind of RC. So my question is -> what Frequency and how many mW should I use, I have some old 35mhz radios so I could use a 2.4ghz FPV. I know the law states that I can only use 2.4ghz or 5.8ghz and up to 25mW or something like that, but all the topics/info that I read was relating to Flying so would it make a difference if I'm not airborne? Thanks for the replies, I'm buying everything from HobbyKing and it doesn't matter from which warehouse, also I'm looking to spend Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 11, 2014 Author Share Posted November 11, 2014 (edited) http://www.hobbyking.com/hobbyking/store/__13435__900MHZ_800mW_Tx_Rx_1_3_inch_CCD_Camera_PAL.html I was thinking about getting this one, what do you guys think? or this - http://www.hobbyking.com/hobbyking/store/__13437__2_4GHZ_1000mW_Tx_Rx_1_3_inch_CCD_Camera_PAL.html Edited November 11, 2014 by Sam.Dzharov Quote Link to comment Share on other sites More sharing options...
jordan_bench10 Posted November 12, 2014 Share Posted November 12, 2014 Tx/rx id go for a dx6 or 5 if you want a stick if not then a gt3b or c if wanted As for the camera theyres not really a rc road laws is common sense and accept people privacy if these are adhered to i see no issues fella especially being on private propety Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 12, 2014 Author Share Posted November 12, 2014 Hi, thanks for the reply. So if you know about FPV and frequencies, what VTx and VRx should I use? both radios that you've shown me are 2.4ghz, should I go for 900mhz frequency? Quote Link to comment Share on other sites More sharing options...
oodboo Posted November 12, 2014 Share Posted November 12, 2014 If you intend to use fpv on a fast off road rc then your main concern will be image stabilisation. Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 12, 2014 Author Share Posted November 12, 2014 (edited) I won't be going that fast and I'll probably put the camera on some foam or something to soak up the vibrations my main concern is Frequency and vtx power Edited November 12, 2014 by Sam.Dzharov Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 12, 2014 Author Share Posted November 12, 2014 (edited) Any clues guys? I can get 900mhz 800mw but is that legal for non-airborne use? And if it's not what're the chances of me getting caught? Also what is in the 900mhz frequency? Edited November 12, 2014 by Sam.Dzharov Quote Link to comment Share on other sites More sharing options...
turok007 Posted November 12, 2014 Share Posted November 12, 2014 (edited) the UK can only use 5.8ghz which is rubbish. lol i wish we could use the other ones as they are fantastic. i have 5.8ghz on one of my quads and line of sight is ok but when i fitted it to my car the distance dropped alot. i think alot of people use boosters. i remember seeing a test with the fatshark 25mw and the 600mw and i think the difference was about 25% as for ground used (all rules state air use) Edited November 12, 2014 by turok007 Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 12, 2014 Author Share Posted November 12, 2014 Right so what are you trying to say? Use 5.8ghz or forget about it? I would call somebody that gives out licences because they'll know but I can't find anyone... Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 13, 2014 Author Share Posted November 13, 2014 Okay guys, I little update from my research. I can use a 1.3ghz FPV setup because it is legal IF not airborne... BUT the bad news are that I can't find 1.3ghz Tx and Rx ... could you guys help me out? Quote Link to comment Share on other sites More sharing options...
turok007 Posted November 13, 2014 Share Posted November 13, 2014 (edited) i have never looked into 1.3ghz for ground use. but you might want to boost your transmitter as well from the net The 1.3 Ghz band The myth regarding 1.3GHz comes mostly from our American cousins, because, if they have a Edited November 13, 2014 by turok007 Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 13, 2014 Author Share Posted November 13, 2014 (edited) So would I need a licence to use the 1.3ghz on ground? Edited November 14, 2014 by Sam.Dzharov Quote Link to comment Share on other sites More sharing options...
turok007 Posted November 14, 2014 Share Posted November 14, 2014 (edited) the license part is vague. lol and you really need to find someone on the NET who has done a FPV car already so it saves you time and money trying to get it to work. Edited November 14, 2014 by turok007 Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 14, 2014 Author Share Posted November 14, 2014 Oh I see lol well the UK law is stopping me from getting the 900mhz so next one up is 1.2-1.3ghz thats what most people recommend Quote Link to comment Share on other sites More sharing options...
turok007 Posted November 14, 2014 Share Posted November 14, 2014 1.2ghz is used by other things so the only sort of free one is 1.3ghz. Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 14, 2014 Author Share Posted November 14, 2014 What's "other things " haha?? I'm just going to get 1.3ghz tx and rx and we'll see what happens Quote Link to comment Share on other sites More sharing options...
turok007 Posted November 14, 2014 Share Posted November 14, 2014 from what ive read don't put it near anything metal. and not near your radio gear. that is going to be a issue on a RC car. Quote Link to comment Share on other sites More sharing options...
Madmini Posted November 14, 2014 Share Posted November 14, 2014 Drop ofcom an email too the following address. They are the people who know. They will reply within a few days [email protected] Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 14, 2014 Author Share Posted November 14, 2014 Oh cool thanks Madmini and yeah I know I'll probably mount the antenna in.the front somewhere or as far away from the receiver Quote Link to comment Share on other sites More sharing options...
Smoothybb Posted November 18, 2014 Share Posted November 18, 2014 Not sure it affects them all the same but the last quote I saw about 1.3ghz is that it "kicks the a$$ out of 2.4 radio gear" If I had indeed have used my illegal 1.3 setup in my plane, I expect that what would have happened is that the vtx would have cut into the rx signal and control would have been lost. The plane would then have circled slowly until hitting the ground and dislodging a few non-essential parts, like the wings. As soon as the vtx was turned off, normal range would have resumed. For this reason I would have ordered a 1.3 low pass filter from china to cut out all frequencies above the required video channel. Admittedly if that had of happened, the vtx was probably only 10cm from the rx. Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 18, 2014 Author Share Posted November 18, 2014 Oh my God this is ridiculous hahahah I'll probably end up getting a 900mhz setup and use it until I get caught... 2.4 ghz won't have enough penetration and 5.8ghz won't have any penetration.. Quote Link to comment Share on other sites More sharing options...
Smoothybb Posted November 18, 2014 Share Posted November 18, 2014 Yeah I thought FPV would be easy after getting the goggles working lol. There is a chart somewhere (can't find the link) detailing what else uses different frequencies. I think 1.3 was mainly bad weather airport landing beacons and coastal radio so if I had used my 1.3 setup I figured it wouldn't be in bad weather and I live in the midlands..... Quote Link to comment Share on other sites More sharing options...
Sam.Dzharov Posted November 18, 2014 Author Share Posted November 18, 2014 so what did you end up using? Quote Link to comment Share on other sites More sharing options...
yoodoo Posted February 22, 2015 Share Posted February 22, 2015 This will help.... Video frequencies for FPV As you look deeper into FPV flying you soon realise there are lots off different brands of equipment available and whats more lots of different frequencies open to buy. The equipment available is for use world wide. But as with all countries the UK has only a select few that we can legally use, that are open to us. Not only are there certain frequencies that we are legal to use but there are also constraints on what power levels we can transmit legally on as well. The transmission levels though are another subject entirely. In this article ill concentrate on frequencies only So what frequencies can you get video equipment for : 900 Mhz 1.2 ghz 1.3 ghz 2.4 ghz 5.8 ghz So whats the difference ? The lower the frequency band, the larger the waveform produced. The larger the waveform the further it travels, the better it can get round or penetrate objects such as small buildings, trees and people. So in that case the obvious choice is go out and buy 900mhz video equipment ? Not that easy I Quote Link to comment Share on other sites More sharing options...
Tamiyacowboy Posted February 23, 2015 Share Posted February 23, 2015 (edited) POWER OUTPUT !!!!!!! your limited to 25mw ( not megawatts thats milliwatts) go over this limit and your breaking the law .dont matter if its land -air subsea etc etc its illegal the reason why is because to transmit on a higher power output you MUST hold a RADIO LICENCE . in other words you need to sit a Ham radio licence exam and pass it. ( let me tell you it aint easy for a start, but once gained you can run over 10w of power and more) alpha -bravo - romeo -foxtrot - wiskey , you have to learn all these codes and know them off by heart. its not just about opperating but other things to. systems 1.3ghz - 2.4ghz - 5.8ghz - 800mhz 900mhz the last two 800-900mhz are mobile phone bands, you CANNOT USE THEM IN UK !!! best systems are UHF dragon and the likes, but these cost an arm and leg and use UHF frequencys range is huge with these, 3 mile+ ( thats the radio control system ) a UHF VTX -VRX is gonna cost an arm and leg to. its specialist gear and commands a price tag to. so basic your stuck to 2.4ghz - 5.8ghz but using differnet setups and boosting the reciever can help a little. also going with purpose made to measure antennas that are tuned to the wavelength your using. cloverleafs and patch antennas ( patch ants are a large flat antenna like a big square disc) they are normally hooked to a servo set and track the signal , or are directed by manual tacking and following. here your using a narrow powered beam to direct it to the tx location. most ground stations do not run a cloverleaf, they will have a large footprint patch antenna hooked up on a long high reach pole Edited February 23, 2015 by Tamiyacowboy Quote Link to comment Share on other sites More sharing options...
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