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Old May 27th 09, 07:46 PM posted to rec.radio.amateur.homebrew
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Posts: 543
Default Transceiver mod


"JIMMIE" wrote in message
...
On May 26, 8:30 pm, wrote:
JIMMIE wrote:
I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.


Jimmie.


As a licensed amateur (I'm assuming US), you can do anything you want
with your equipment as long as you don't transmit outside of the
frequencies and modes authorized by your class of license.

--
Jim Pennino

Remove .spam.sux to reply.


Thanks Tom and Jim, It was also my reasoning that if I could build my

own transmitter and operate it surely modifying equipment would be
legal as long as I did not transmit outside the bands. The radio is
an Icom and I use software thst I wrote to control the frequency/mode.
It would not be too difficult to modify the software to limit the
frequency data sent to the transceiver in accordance with the band I
am using. The software already "knows" when I use the transverters so
I get the proper frequency dispaly. As the XYL and YL may be using it
some goof proofing may be in order. Hopefully soon I will also have
the computer controling the switching of the transverters.

Jimmie


The spectral purity specifications in part 97. Most HF rigs have allowed
some out of band operation ever since I could remember. It is the shared
responsibility of the station licensee and control ops to stay cleanly
within their grant. Regular RG 58c provides at least 60db of isolation from
adjacent cabling. Be aware of the possibilities of what might come out of
the antenna ports and take appropriate action. If you waste a little power
in an attenuator and/ or filter circuit on the input of the Xverter,
spurious from the driving radio are also reduced. Nice to be able to verify
with a spectrum analyzer too if you know someone. GL



 
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