Is 2.4ghz really better than 35mhz?

[scallybert]

i might try a 2.4ghz conversion module for my tx. i think i saw one for £40 on ebay from the states....

At risk of being the unofficial voice of doom.., you may find that module isn't legal for use in the UK.

That being the case, it's not just illegal, but (IIRC) voids your personal liability insurance.

I'd also suggest that a 2.4GHz set-up of doubtful provenance, is likely to be worse than a good 35MHz set-up. IYSWIM.

[waveydavey]

I have only recently changed from 35meg to 2.4, mainly because I got a super deal on a DX7. I never had radio trouble with 35 meg, but what i can say over 35meg is how much bette the reaction of the heli is. I couldn't believe how much I had to change the timing on tick tocks.

[scoobystig]

i still use 35mhz for some models, never had a problem, if fact i have had more issues with Spektrum Brownouts than with 35mhz kit

yes on some electrics it can be an issue depending on aeriel location, but i flew both my 450 and a funjet on a Futaba 146 which is a short range PCM rx and never had a single glitch

our whole flying school runs on 35mhz with no issues including the turbines, 2.4 doesnt solve all our issues as we need 6 Txs to be able to fly all the school fleet, with 2.4 you can only have 1 TX bound to each RX

[muscleflex]

Hi, thanks and apologies as i don't know much... but why is it not legal?

At risk of being the unofficial voice of doom.., you may find that module isn't legal for use in the UK.

That being the case, it's not just illegal, but (IIRC) voids your personal liability insurance.

I'd also suggest that a 2.4GHz set-up of doubtful provenance, is likely to be worse than a good 35MHz set-up. IYSWIM.

[waveydavey]

I think you'll find that as it's an add on to the tx it is not covered by one CE mark and thus is not ratified by the BMFA. Straight from the horses mouth;

“Ofcom have advised that replacement modules need to be individually compliant and correctly CE marked.
Additionally, the manufacturer or person who first places the module on the market in the EU, is responsible for ensuring the compliance of the overall unit (transmitter plus module).
If you are considering using such a module, you should ensure the manufacturer of the module certifies that when the module is fitted, the complete transmitter unit is compliant with current regulations”.


I think this is where the problem lies and I don't think that Spectrum would submit say a PCM9X2 with one of their modules for CE certification

[scallybert]

And it was for sale in the US, so presumably US spec; not UK/EU.

[electricsceadu]

with 35mhz, one day your going to get a hit, with someone being on the same channel. with 2.4ghz, your never going to get a hit

as most have gone over to 2.4 ghz this is getting less likely by the day
a few years ago this statement would have been 100% correct
but in 12 years of rc aircraft flying i've only ever seen it happen once
and yes thats once too often

i have seen more trouble with 2.4 ghz than i've ever seen with 35 mhz

and before you ask i fly fasst 2.4 and still have 1/2 of my models on 35 mhz

and my trex 450 is on 35mhz pcm
on ppm it did glitch badly so i put a pcm rx into it (2.4 wasn't out at the time), its never glitched so far on pcm

[cjcj1949]

Any setup can be faulty. I wouldn't use a system that doesn't give at least 20 metres in range check. It's not that you need it for a heli, but if you don't get 20 metres then something needs fixing.

Chris

[muscleflex]

as most have gone over to 2.4 ghz this is getting less likely by the day
a few years ago this statement would have been 100% correct
but in 12 years of rc aircraft flying i've only ever seen it happen once
and yes thats once too often

i have seen more trouble with 2.4 ghz than i've ever seen with 35 mhz

and before you ask i fly fasst 2.4 and still have 1/2 of my models on 35 mhz

and my trex 450 is on 35mhz pcm
on ppm it did glitch badly so i put a pcm rx into it (2.4 wasn't out at the time), its never glitched so far on pcm

i might try and look for a PCM receiver and see if that makes a difference?

[Grant85]

i might try and look for a PCM receiver and see if that makes a difference?

Stop being so tight with your money lol and just get a cheap maybe second hand DX6i or something...They usually go for what about £50 and get a Rx for what another £30 so for £80 the price of a night out you will be all set and good to go on 2.4GHZ and that will last you years! It will pay for itself! You know it makes sense!

Cheers Grant.

[muscleflex]

what do you guys think to this?
will it fit my Eclipse 7?
Hitec Spectra 2.4GHz AFHSS module + 7ch Rx
http://www.modelshopleeds.co.uk/cata...oducts_id=5054

[danch]

This post would seem to suggest it's possible :

http://www.rcgroups.com/forums/showthread.php?t=1210865

Dan