gd0tep wrote:
As some one who bought the K3 purely for it's RX performance on 6m, can
some one tell me once and for all if it is as good as, or better/worse
than, other radios like the Icom 756 pro etc... It was my understanding
from information provided that it was, is this not the case??
The K3's sensitivity specification corresponds to a noise figure of
about 13dB. My K3 meets its sensitivity spec almost exactly, but at this
site it can barely hear antenna noise on 6m.
By contrast, the old IC-746 hears 6m antenna noise easily because it has
a VHF-optimized preamp built in. Even that ageing mid-range rig has a
choice of two different preamps (and a third dedicated to 2m).
Of course it's still possible to work lots of weak DX on 6m using the
standard K3 receiver; but in the limit, some QSOs will be lost that
could have been completed with a more sensitive receiver.
The K3 with a preamp is probably the best 6m receiver available; but
this high-end rig should have included a competent 6m preamp and bypass
relays on the original KVXV3 board, and not as a clumsy afterthought.
--
73 from Ian GM3SEK
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