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Old May 28th 08, 02:48 PM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Dec 2007
Posts: 17
Default Triband Mobile Vertical

They certainly are, i'm using a couple at the moment. Our 2 Mtr and 70cm and
UHF CB are all 25KHz spacings.
There is talk of changing the UHFcb to 12.5 Kc to get 80 channels instead of
40 but i don't see how this will work as there will still be thousands of 40
channel radios out there with standard deviation splattering all over the
newer narrower radios.

As for the pmr446 band, you need a radio that will do 12.5kHz not 2.5 which
are available here and i would guess many other countries. From what i read
the band starts at 446.0 and goes to 446.1, thus 446.012.5 - ch1, 446.025 -
ch2, 446.037.5 - ch3 446.050 - ch4 etc. The deviation for that would be
around 8kHz and for 25KHz would be around 12. i think, not 100% but i'm sure
it's something like that over here.

Anyhow, i still need an antenna lol.

Gary


"Highland Ham" wrote in message
...
Gary Smith wrote:
UHF Cb in Australia is in the range of 476.425 - 477.400 MHz.
Sorry, i was thinking i was posting in an Australin ng.

So i need an antenna to cover 144-148, 430-440 and 476.425-477.400MHz

Thanks.

Gary

=======================================
UHFcb in Oz-land is highly likely similar to PMR446 in Europe and FRS in
the USA.

PMR446 are 8 RF channels with 12.5 kHz spacing starting at 446.0025
MHz . That means using a Ham radio it must have the capability to be set
at 2.5 kHz channel spacing and few if any ham transceivers have that.
Also, the deviation is set at a low 1.5 KHz.

So I wonder how UHFcb is operated in Australia ........would a Ham radio
with extended range be usable ?

Frank GM0CSZ / KN6WH


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