New JRX9303 2.4 Gig - legal power in UK or not???

[moyesboy]

It only an issue if the rain drops are the same distance apart as the length of the 2.4Ghz receiver antennas.

[pchristy]

Moisture in the air is not a problem - at least, not until there is so much of it that it trickles into the tranny and shorts it out!

Wet foliage is another matter - as any of you who live in a fringe TV area will know!

I was initially worried that wet grass at airfields might be problematic, but just as helis suffer from "ground effect", so do radio waves. As a wavelength at 2.4GHz is only a few centimeters, once you are more than 1 wavelength up, you are effectively out of "ground effect", and don't need to worry!

The only way to be sure you are legal is to buy in the country of intended use. That way, if your set is found to be non-compliant, it is the *importers* who will have to carry the can - not you!

If you "grey import" from the US, Hong Kong, or anywhere else, *you* become the importer and are responsible for ensuring the equipment is compliant. This could be very expensive in the event of an accident!

The JR sets are currently undergoing type approval testing and as of a few days ago, *there are no JR 2.4 GHz sets approved for use in the UK*. I understand the expected date we will see them is early March - maybe a bit earlier.

There are shops in Singapore advertising CE approved sets. THEY ARE NOT CE APPROVED! There are currently NO CE approved JR 2.4 GHz radios.

Believe me, as soon as they ARE approved, MacGs will have them!

If you buy a set that turns out to be incorrectly marked, your only recourse is against the supplier. This might be very difficult to do if that supplier is not on the UK.....!

Caveat emptor!

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Pete

[david2547]

thanks for clearing that up but it is a power drop without question, wether that equates to a noticable problem or not i wouldn't know but there are claims in germany who have the decreased power that range is half what it was.futaba apparently are not bound with the same problem spektrum are due to the shifting in fasst.

it is not a myth, horizon have issued a bulletin....some radios have a problem and people should call them.

cheers

A bulletin was issued by Horizonhobby stating that US DX7 is illegal in EUROPE....not sure if this includes UK cos I have heard that 100MW is legal in UK

[david2547]

[quote=Rick Rotorhead;76159]Like many I'm casting avaricious eyes over the new JR tranny - at least as good as my current Fut9C super with integrated 2.4 Spektrum technology - luvverly!!!! Trouble is you can only get them in the USA right now!

However, I'm a little worried that the US spec may include a higher power output than we are allowed to normally purchase in UK. (As an example: I understand the the Spektrum DX7 from American retailers features a 300mW output, but the same Tx in UK is 'de-tuned' to just 100mW).

So, is this true also of the JR X9303? If I get one from the States will I be infringing our permitted 2.4Gig Tx spec - in which case I should think that would invalidate my BFMA insurance......

Any advice or views greatly appreaciated before I commit to the considerable funds......[I heard that the US DX7 are at 100MW so I can understand all the confusion]

[pchristy]

There is more to it than just Tx power, although that is the major issue. To meet EU specs, JR had to add a lot of internal screening to the DSX-9 to meet the spurious emission part of the specs. So even if you get a US set and have the power reduced, it STILL wouldn't be compliant with EU regulations!

The ONLY way to be sure that you are fire-proof is to buy a set in the country of intended use. Even within the EU, the specification varies - most notably in France - though moves are underway to sort this.

Also, there is no-one who can reduce the power of 9303s other than possibly Horizon in the US. As I understand it, Horizon UK are not permitted to touch JR equipment, just as MacGregors are not permitted to touch Spektrum sets, under their respective licensing deals. Having spent a small fortune getting the DSX-9 certified for UK use, I can't see MacGregors falling over themselves to help people short circuit the system (disclaimer: I don't work for MacGregors, though I know some of the folks there fairly well).

So in short, the 9303 isn't - and probably never will be - EU compliant!

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Pete