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Antenna placement question

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Neil Powell 110/02/2020 21:31:31
38 forum posts
3 photos

Hi just a quick question about 2.4ghz antenna and if they are ok to be place in a 2mm thick plywood hull without any of the antenna being outside. Hope that makes sense



Ray Wood 210/02/2020 21:40:33
2047 forum posts
720 photos

Hi Neil,

Yes that will work on the inside of the boat 😀 it's magic !!

Regards Ray

Neil Powell 110/02/2020 21:47:48
38 forum posts
3 photos

Thanks Ray. Glad that you didn't give me a technical explanation, magic will do me 😂

Dave Cooper 610/02/2020 23:22:03
171 forum posts
16 photos

RC radio waves will pass through wood ok but, the other day I was running some tests in the kitchen sink (ie stainless steel all around the Rx). It didn't like it one bit and the servos were hopping mad.... !

Best avoid any metal 'shielding' of the Rx /aerial when planning your installation. Electric motor wires probably carry the greatest currents in a boat and it's good practice to fit some RF (TV type) suppressors to the motor contacts. (sorry, getting a bit tech now !)


Malcolm Frary14/02/2020 09:51:38
895 forum posts

Receiver aerials should always be as high as is practicable, and not shielded by anything that conducts electricity. Dry wood, paint, plastic, fibreglass are all OK. Metal a definite no-no, carbon fibre, probably not good. That's real carbon fibre, not the pretend stuff which is usually painted plastic.

2G4 aerials lose range if they get below the waterline.

Neil Powell 114/02/2020 10:12:33
38 forum posts
3 photos

Thanks Malcolm. Do those guidelines apply to 5.8ghz also.

ashley needham15/02/2020 09:12:10
6666 forum posts
160 photos

Yes, due to the high frequencies.

i think, practically speaking, and providing you don’t motor miles away, as long as the aerial is above the waterline you should be ok.

not come across this a legal frequency in the uk?


Malcolm Frary15/02/2020 09:31:51
895 forum posts

The higher the frequency, the smaller the item required to block it. Some commercial items using the amazingly high frequencies use technical trickery to get round the problem and effectively go round corners, but that, as far as I am concerned, is firmly in the realm of magic.

If a 5.8GHz receiver only had one antenna wire this would not apply, I would guess that it would be line of sight only, no interruptions. I haven't spotted any model use of this band, but I expect it will come when smartphones using it become more common and production of the hardware becomes mainstream, and thus cheaper.

Neil Powell 115/02/2020 09:45:34
38 forum posts
3 photos

I want to equip my boat with a 5.8ghz camera with a single antenna tx. My last one had the antenna sticking out the top but it doesn't look nice

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