[Elecraft] [K3] K3 VS 7600 Sherwood List

[Stephen Prior]

I spent several hours comparing my K3 with an IC7700 a couple of weeks ago.
I was hard pushed to hear any practical difference between the receivers in
digging weak signals out of noisy band conditions, but what struck me most
was that as soon as the Icom went on ssb tx (20m) the whole noise floor rose
on the K3 dramatically (on the same band about 100kHz away).  Onto transmit
on the K3 with the IC7700 on rx, there was no sign of the K3 at all.  I
forget what transmit levels were being used but they were the same with both
rigs.

The K3 was on a G5RV and the IC7700 on an R8 with half a small garden's
width between the antennas.

I like the IC7700 a lot, it's VERY pretty and has really rich audio like the
IC781 which it replaced at my friend's qth.  However, it's also very big,
heavy and expensive.

Horses for courses....

73 Stephen G4SJP




On 06/09/2009 07:45, "Dave G4AON" <elecraft at astromag.co.uk> wrote:

> 
> One area where the K3 is also looking good is the transmitted noise
> level, ARRL members may wish to look at the on-line reviews and check
> the close in spectrum analyser plots of the K3 vs the rest when keying
> on CW. A near neighbour appears to be +/- 50 KHz wide on 80m with
> rubbish from his transmitter, now if he was 15 dB cleaner by running a
> K3 instead of his "top of the range" rig (it's not Icom by the way) some
> of us would be a bit happier. Maybe that's why multi-rig contest
> stations are migrating to the K3?
> 
> 73 Dave, G4AON
> K3/100 #80
> ------------------