iOSD and 25mW video Tx help

[MrMarr]

Hi Guys! New to this group but you guys seem pretty knowledgeable, I hope you can help.

I'm in the UK and building up my S900 with A2, Z15-GH4 and iOSDmkii. I have a question about video transmitters. Being in Europe I'm limited to a 25 mW and they all seem to be for 3-4s systems.

Anyone using this set up or got any clues what the best/easiest/lightest solution might be?

Thanks in advance. M

 

[Carapau]

The Immersion 25mw I bought can take up to 6s direct input as can be seen in the photo. I think most shops in UK sell these. Ask someone at the shop to double check though as I note a couple of shops are stating that it can only go to 16v.

 

[MrMarr]

Nice one, thank you. Mine just arrived today, and indeed, on the packaging it says 6s! Every place I saw selling it has 4s max in their descriptions. Bizarre!

 

[Joseph Cooper]

I'm confused by this 25mw limit. Surely you won't get much of a signal with that? Mines 200mw and I get a good signal up to around 200 meters with it, and then it starts to break up.

 

[Carapau]

Joseph, 25mw is the legal limit so flying your 200mw is against the law. The scary bit: if you get caught they can impose a hefty fine and confiscate all associated kit I believe. The reality: how you would ever get caught, I don't know and Ofcom have all but said that they are not very interested. However some of us are sticklers and so 25mw is the limit we stick to.

 

[Joseph Cooper]

Well they would need a good reason to do anything about it. If it happened to interfere with something. But even then they couldn't just come along and take everything off of you.

 

[Carapau]

It would have to go to court first before kit was taken from you I would think but that's not really the point. The point really being that over 25mw is illegal.


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[Carapau]

Adding to my last, the vast majority of operators in the UK do not stick to 25mw from what I have seen.


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[eskil23]

I'm confused by this 25mw limit. Surely you won't get much of a signal with that? Mines 200mw and I get a good signal up to around 200 meters with it, and then it starts to break up.

The max power depends on what band you are using. As I understand it the 25 mW limit only applies to the 5.8 GHz band. A 200 mW 1.2 GHz video link should be legal.

And on top of that there are national variations. In Sweden up to 2 W output is legal on the 5.8 GHz band when used for "vechile telemetry". The 25 mW is for "unspecified purposes".