Hi Frank,

I've had pretty good luck with mine, so I am not sure what happened with
your units. As far as the 455kHz I.F. there were a couple of engineering
changes. First of all, that 270uH inductor was replaced with a tunable unit.
Next, there was a .047uF coupling capacitor that was changed from a leaded
unit to an SMD type. Apparently, there was some radiation from the cap.
I haven't experience that problem with my unit.
As far as sensivity, both my HF-150 and my R30 are in the .1uV
range..........when the whip amp on the 150 engaged, the sensivity improves
to .04uV.
I haven't used my comm receivers very much, instead, using the Grundig 3400
as a bedside radio, but that can change, depending on moods.

Pete

wrote in message
oups.com...
I must have been doubly unlucky with the R-30 because I've had two of
them and they were dogs! They both had massive birdies and an unstable
IF, not to mention vastly inferior sensitivity to the HF-150 that I
compared them with. I actually liked the feel and sound of the R-30s
but even my old FRG-8800 ran circles around them.

Frank
K3YAZ
Tucson