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P1030
radio.
A few years ago these radios were sold at a
radiomarket in Meppel. At first sight they
are very interesting, but when i had bought
them I noticed they must be programmed with the
plug on top. Some of them only gav ethe message
‘Prog’ on the display, they probably lost their
program of have neven been used before.
The original program is only a list of frequencies
and trunkin data. This software must be uploaded by
some PC program and a cable which are not available
in the Netherlands.
The only solution for making these radio's useful
was to write new control software for the main CPU of
the radio. This gives also the possibility to use every
frequency at the 12.5kHz spacing instead of some
fixed channels like the PRP73. The
main CPU is now able to calculate every frequency
with or without shift. There is a 70cm version and
a 2meter version available, in the Netherlands
probably only 70cm.
The original frequency range of both versions are far from the
amateur frequencies, with retuning the front-end it is possible to create a good
sensitivity. The problem is for the second half of the amateur band, the VCO can't reach
it so for receiving some frequencies the VCO is switched to TX mode by software to
add this frequency part.
Most radio's have a transmitter power of about 7 watt, this
can be selected by software in 8 steps. See the usermanual for the
possibilities or download the .doc file…
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