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Model Forum / Radio Controlled / Land Models / November 2006



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27 v 40 mhz?

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ian - 25 Nov 2006 19:39 GMT
my car came with a 27mhz transmitter.  Most replacement ones seem to be
40mhz.  They are both am systems.  Are there any advantages to 40mhz?
Bob - 25 Nov 2006 20:39 GMT
>my car came with a 27mhz transmitter.  Most replacement ones seem to be
>40mhz.  They are both am systems.  Are there any advantages to 40mhz?

  Although I am not an experienced RC'er, I am experienced with RF (
Radio Frequency ). The best reason I can think of to avoid 27mhz is to
avoid the interference from over powered  CB transmitters.

  Bob
Richard - 26 Nov 2006 03:44 GMT
> >my car came with a 27mhz transmitter.  Most replacement ones seem to be
> >40mhz.  They are both am systems.  Are there any advantages to 40mhz?
[quoted text clipped - 4 lines]
>
>    Bob

That also depends what country your in Bob.  I think in the US 27 Mhz CB is
still very popular, in the UK I'm pretty sure they use 27 Mhz FM only and in
Australia 27 Mhz is pretty much non-existent because of the 477 Mhz FM CB
band.

The other thing you can look at Ian is the 2.4 Ghz radios like the Spektrum
DX2 or DX3.  It automatically finds your frequency and it also 99.9%
guarantee's that you will always have a open frequency with almost limitless
channel choices.  So no more crystals, digital and almost 100% interference
free makes it one of the best choices.

Cheers
ian - 27 Nov 2006 00:15 GMT
: > >my car came with a 27mhz transmitter.  Most replacement ones seem to be
: > >40mhz.  They are both am systems.  Are there any advantages to 40mhz?
[quoted text clipped - 17 lines]
:
: Cheers

I have a ko pro transmitter receiver system.  it currently runs on 27 am.
It has 2 model memories.  I don't think it will accept the spectrum modules.
ian - 27 Nov 2006 00:09 GMT
: >my car came with a 27mhz transmitter.  Most replacement ones seem to be
: >40mhz.  They are both am systems.  Are there any advantages to 40mhz?
[quoted text clipped - 4 lines]
:
:   Bob

I thought the mobile phone killed those rigs off years ago.  I have one,
antennae on the roof, about 15 feet long.
 
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