Preamps are handy to boost the performance of radios with poor front end
sensitivity or for use with antennas with poor efficiency. However one has to
be
extremely careful that the addition of one does not actually degrade the
performance of the radio.
The K2 with it's built in preamp switched on seems to on a par with the best
radios at present available in the market on this score with an extremely
sensitive RX front end. I would also have thought the ambient noise level on
80
and 160m in a greater part of the world unless you intend moving to
somewhere like Antactica would have largely negated the benefits of almost all
preamps. Without being extremely careful with the gain and type of preamp you
are
adding could have an adverse effect on the performance of your K2.
The normal problem is how do sort out the wanted signals from the ever
increasing layer of electronic smog that is emanating from modern electrical
and
electronic appliances, particularly on 80/160m?
Bob, G3VVT
K2 #4168
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