I have a couple of them in service on two 440 repeaters, and they work OK. I
have too much gain, and they both give some desense with the transmitter keyed,
but both provided a worthwhile increase in receiving range on the repeaters.
(GE Mastr II base repeaters)
They are a little tricky to tune though, as you have to spread the turns on the
front end coil to get them in the band. The stock front end coil is below 440
mHz.
I had very poor luck trying to use the 2 meter version, even with a pad to
decrease the gain. Receive range always decreased with the addition of the
preamp. A stock GE HS preamp worked far better.
73 - Jim W5ZIT
Laryn Lohman <[EMAIL PROTECTED]> wrote: ........I
know, I know.... Not First Class, but, has anyone ever used
the Ramsey 70cm preamp, the $15 one? I *have* put one of the 2m
versions of this preamp into service on a repeater remote receiver and
it works fine after 4 years in operation.
This one would be for a simplex packet radio, an Exec II. There is a
tight bandpass filter in place already, so the preamp would not be
subject to on-site commercial RF overload.
Laryn K8TVZ
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