[VHFcontesting] Re 4 meters

[Eric Smith]

Got tons of 66-88Mhz stuff left over from the other users
of the space between TV channels 4 and 5... Paging
companies!!!  Many systems, back in the "dark ages" before
satellite data  communications, used 72-75 Mhz narrowband
FM for linking the paging sites to the area "master"
transmitter.  Thus, I got lotsa commercial Yagis, cavity
filters, and even a pair of Motorola transmitters and
receivers.  Lots of GE receivers also.

The cavities tune up nicely on their 3rd harmonic, 222
Megahertz!!!
Eric
KB7DQH


On Thu, 19 Jul 2007 09:23:21 -0400
 "Vic" <wb4slm at cox.net> wrote:
> 4m is alive & well -- I copied signals on 20 June here in
> EM82 and was hoping for a 4 to 6 meter crossband -- Mike,
> VE9AA,  did have a crossband & perhaps the first
> "recorded" in history .. if one is so inclined a simple
> search on "youtube" one can find the video .. 
> 
> Regarding Transverters -- I know of two transverters &
> receive converters made for 4 meter operation -- one made
> in OZ --link is,
>  http://rudius.net/oz2m/70mhz/transverter.htm  and the
> other made in England by Spectrum Communications link is,
>  Spectrum Communications 
> 
> I've heard U.S. amateurs could have been authorized 4
> meters years ago, but the Remote Control Aircraft Hobby
> Lobby may have kept it from happening, the RC spectrum is
> however 2 MHz higher than the Euro's use for weak signals
> .. however, I think something could be worked out if the
> FCC would authorise the use of the band .. and I like RC
> aircraft so no "flames" please :-))
> 
> U.S. Ch4 falls within the Euro spectrum, so until HDTV
> actually becomes the defacto standard we may have to do
> without weak signal 4 meter operation .. 
> 
> There is a web page with all the info one needs about 4
> meters .. link is http://www.70mhz.org/ 
> 
> 
>       I would like to see more people QSX on 4 meters in
> the U.S. as I think the propagation is there, just not
> enough aluminium in the air to find out ... just think it
> was only a generation ago we were doing cross band
> contacts with Europe on 10 to 6 meters ... 
> 
>       Cheers de Vic -- WB4SLM EM82dp -- ex G0MOS .. 
> 
> 
>      
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