Hi Bill,
The 902 to 903 portion of the band is in fact part of the Amateur band and
is designated by the ARRL band plan as Narrow-bandwidth, weak-signal
communications. It is a good question why we use the 903 instead of 902. I
think it has to do with the fact that a lot of 900MHz hand held telephones
are operating in that portion of the band. Since I have (not working at the
moment) a DSP-10 for the IF rig, it made it simple for me to set up the
DSP-10 to display 903.nnn on the frequency while in fact I was working with
a 902 to 144 transverter even though the DSP-10 was putting out 145.nnn
MHz. I was really surprised as to the telephone activity I could hear on 902.
Lee Scott - AA1YN
Home of the VHF & Up Register http://www.aa1yn.com/vhf
Hooksett, NH
FN43gc52
At 05:06 PM 5/14/2003 +0000, you wrote:
>Kevin, Gosh it's so long ago and my mind isn't as sharp as it used to be.
>I think we (in the US) LOST the 902-903MHz portion of the band. The
>Canadians still have 902 so that's why the 144-902 combo still exists and
>it's perfectly useable at 903 when the IF is tuned to 145. There used to
>be "some" stations back in the "old days" that couldn't go above 144.4
>(for instance) with their IF rig (I know that seems pretty far fetched
>with the proliferation of multimode 144-148 rigs these days - but it's
>true). That fact coupled with the desire to have "instant bandswitching"
>(not having to change band switch on IF rig when going from 903 - 1296 -
>2303, etc) made the 144-903 desireable to some.
>
>These days the 144-902 (144-903) setup is probably the best. That way if
>you want to sell the rig to a VE station, he doesn't have to buy a new
>crystal if he wants to operate at 902.. (hah!)
>
>hope you are now as confused as I am!
>
>bill, k1DY Maine
>
>_________________________________________________________________
>STOP MORE SPAM with the new MSN 8 and get 2 months FREE*
>http://join.msn.com/?page=features/junkmail
>
>_______________________________________________
>VHFcontesting mailing list
>VHFcontesting@contesting.com
>http://lists.contesting.com/mailman/listinfo/vhfcontesting
|