Please be careful when picking a clear channel. I think I remember
something in Part 73 or is it Part 74 that you need to be at least the
3rd adjacent channel away from an existing licensed user in the
commercial broadcast band 88-108 MHz.
How much power is this transmitter putting out? Is it 10 watts or is it
in milliwatts? Just curious.
Rob Weinstock wrote:
>
> >SFR tried the "low power FM transmitter" again yesterday, and it failed to
> >work again.
>
> Actually, the low power FM transmitter was repackaged, tested, and it works
> fine. There was an issue in the morning in trying to find a clear frequency
> -- the GGF site is noisy in RF terms.
>
> A clear frequency has been found 93.7 MHz, and was range tested. From the
> RV, signal could be received (barely) at the end of the second grid, past
> the catering truck, and out by the porta-potties. That's three different
> directions. A directional antenna may improve things further. Reception was
> tested by asking drivers to tune in their car radios. Thanks to those of you
> that helped, BTW.
>
> Once this was resolved, another problem was discovered with the AC generator
> in the RV -- it kept cutting out. Although the FM transmitter will continue
> to operate (battery powered), the microphone/PA will not. With this problem,
> there seemed to be some reluctance to announce the autox.
>
> So, there are a couple of items that have to be addressed with the "low
> power FM transmitter".
>
> First, it is battery powered, so this has to be watched. There is an LED
> indicator on it; if it goes dark, replace the batteries -- they lasted all
> day, BTW. Remeber to turn power off when not in use.
>
> Second, the antenna needs to be placed on the roof of the RV, and then taken
> down at the end of the day. I made a antenna frame with a "grounded plane"
> that can be placed up there relatively easily. There is sufficient cable to
> go from the roof of the RV, through the vent, and to the transmitter.
>
> Third, we need to start announcing.
>
> Next time out, I'll label the box and bring out written instructions for
> setup and tuning. There should be no need to retune at GGF. 93.7 MHz.
>
> Regards,
>
> Rob Weinstock
> ________________________________________________________________________
--
Kenneth Allan Mitchell
mailto:nokones@ix.netcom.com
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