Radio Gear Question.

[Static Age]

I have 27mhz radio sets in my runners as thats what I had in the 1980's. I see that the 2.4ghz sets are now equally priced, whats the advantage of 2.4ghz over the old 27mhz set up?

[kaiser]

no crystals or frequency conflicts.

no glitching.

longer range.

shorter antenna.

many 2.4ghz radios only use 4 AA batteries instead of 8.

many 2.4ghz radios have multiple model memory as well.

[Static Age]

Thanks for the reply kaiser.

The 2.4ghz set up sounds ideal for what I want in my drift car. How does it get around the frequency conflict without crystals?

[kaiser]

2.4ghz tehnology uses "spread spectrum", basically it hops through frequencies until it finds one that is not being used.

it does this constantly and in mili sceonds so there is no loss in signal or function.

i'm not sure my explanation is 100% correct but we don't "need" to know how it works, it just works. lol

[taliesin]

2.4ghz scans the available freaks about 500x/sec and if a signal encroaches on the bound freak it switches to a different one in a tiny fraction of a second.

I'm no engineer, but that's it in a layman's terms.

[Static Age]

Thanks guys. Just satisfying my curiosity with that last question.

[Percymon]

I bought the Acoms Technisport kit recently (they do two, one with servos and one without) and have to say its pretty good for the money (under £40) - really easy to set up and the receiver is minute (less than an inch square!)

If you want something even cheaper , then end-of-line-rc had a non boxed system, similar tot he Acoms, a week or so back for under £20 !

[Butler]

just noticed Acoms have released a stick version of their 2.4ghz kit.

[Kevin_Mc]

all i've ever had is 27Mhz from Acoms and i can't fault it, 2.4Ghz sounds good though

[Percymon]

all i've ever had is 27Mhz from Acoms and i can't fault it, 2.4Ghz sounds good though

Me too, but recently the Acomms 27Mhz receivers seem to be £21-23 each (last year i was paying about £16) plus crystals, so the move to 2.4 was a pretty easy one. Separate receivers are about £23, which is OK give you don't need to buy extra, or swap, crystal sets from one car to another.

[Kevin_Mc]

i take it you have to get a 2.4ghz reciever for each car too?

[Percymon]

i take it you have to get a 2.4ghz reciever for each car too?

Its no different to 27MhZ, you either move the receiver over from car to car, or buy two receivers.

With 2.4Ghz you only have to buy the receivers, as there are no crystals.

As an example for 2 cars..

27Mhz

One receiver £22 and crystal set £7 that moves from car 1 to car 2

Two receivers £44, one crystal set £7 - just move crystals from car 1 to car 2

Two receivers £44, two crystal sets £14 - permanently installed in both cars

2.4GHz

One receiver that you move from car 1 to car 2 £23

Two receivers, one in each car permanently £46

Given you an buy a Acomms technisport TX and RX for under £40 there's no point staying on 27Mhz !