[NSRCA-discussion] Futaba 9z with Spektrum SPMMSFUT7

[Ron Van Putte]

I don't know about whether it makes a difference or not, but I do  
know that the higher frequency means that the signal's wavelength  
will be much shorter than that for 72 MHz and I would think that the  
2.4 GHz signal would be susceptible to distortion from an adjacent 72  
MHz antenna.  However, what do I know about electronics and radio  
frequency distortion; I'm an aeronautical engineer?

Ron

On Sep 7, 2007, at 12:28 PM, george w. kennie wrote:

> I would guess that when you plug in the S.S. module, the original  
> output signal path is interupted and redirected to the 2.4 antenna.  
> So with no signal going to the original antenna it doesn't make any  
> difference whether you remove it, leave it in, extend it, or  
> collapse it, ..........it's just along for the ride.
>
>
>
> ----- Original Message -----
> From: Dave Smith
> To: NSRCA Mailing List
> Sent: Friday, September 07, 2007 1:08 PM
> Subject: Re: [NSRCA-discussion] Futaba 9z with Spektrum SPMMSFUT7
>
> According to Krysta,the antenna for the 9C just retracts into its  
> case.  I would guess other Futaba TX's would have the same feature.
>
> Dave
> ----- Original Message -----
> From: Bob Richards
> To: NSRCA Mailing List
> Sent: Friday, September 07, 2007 1:48 PM
> Subject: Re: [NSRCA-discussion] Futaba 9z with Spektrum SPMMSFUT7
>
> I have not removed my 72mhz antenna. Of course, I have not flown it  
> yet. I'll have to review the instructions to see what they say. I  
> can't imagine the antenna would have to be removed, just fully  
> retracted.
>
> Bob R.
>
>
> Ron Van Putte <vanputte at cox.net> wrote:
> I assume that you must remove the 72 MHz antenna from the transmitter
> in order to have the Futaba TM-7 module function at its best. True?
>
> Where are the TM-7 module and R607FS receiver available? Tower still
> says availability in "early September".
>
> Ron
>
> On Sep 7, 2007, at 9:36 AM, Bob Richards wrote:
>
> > >>>Futaba ought to be ashamed of putting this out!
> > Jerry
> > <<<
> >
> > Pardon me, but this was NOT Futaba, this was Spektrum.
> >
> > I have just purchased the TM-7 2.4ghz module, that was made by
> > Futaba. Does not look like a kludge to me, IMHO. I can very easily
> > swap between the 2.4ghz and 72mhz modules at any time (and probably
> > will for a while).
> >
> > Bob R.
> >
> >
> >
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