wayne burdick wrote:
For some applications on 6 m you might want a lower NF, and we took this
into account by providing a path into which you could patch an external
preamp, if necessary. Thus the RX IN and RX OUT jacks on the KXV3. We
also provided a way to power it (12VDC OUT) and turn it off/on
(DIGOUT1). We also included through-mode jacks on the PR6 itself so it
can be bypassed while still allowing the connection of RX antennas or
filters for other bands.
The resulting MDS with the PR6 inserted is better than nearly every HF
transceiver that also covers 6 m. Of course many 6-m stations doing
weak-signal work already have external preamps either in the shack or
mounted at the antenna, and they likely will not need the PR6.
In order to tell if your installation requires a preamp, a simple rule
of thumb is to listen to band noise while switching between your antenna
and a dummy load. If the band noise increases when the antenna is
connected, then a preamp would not improve your ability to hear weak
signals.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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