[Elecraft] K3 question to field testers - 10M birdies??

[Tom Hammond]

Hi Simon:

At 05:40 07/21/2007, Simon Lewis wrote:
>Can one of the testers please comment....
>
>My main interest in the K3 is for transverter driving from 10m
>
>Can someone provide info on what birdies if any they find around the 10m
>band receiver
>
>My K2 was less than acceptable in this hence the reason it got sold
>
>Is the K3 10m section free ?? Anyone comment?

When I first received my K3, I tuned thru the bands specifically 
looking for birdies which I felt might cause reception problems... 
e.g. birdies which I COULD find with NO ANTENNA connected and which 
were still present when an antenna for that band was connected, and 
still strong enough to be a potential problem.

For 10M, I found two spurs:

   29.085.55 MHz  Moderate
   29.661.70 MHz  Strong

I reported them to Wayne and the other Field testers. Wayne 
immediately responded,
suggesting that I double-check the physical (mechanical) grounding of 
the shield
immediately behind the front panel "sandwich" of PC boards to its 
attachment point
on the top-left side of the radio frame.

Sure enough, the screw at that point had not been securely tightened 
by the assemblers.

I snugged down the screw at that point and re-checked for birdies on 
10M... GONE!  The only birdies I could then hear (no antenna 
connected) were completely covered when my 10M yagi was attached 
(note: the band was DEAD, and there was no QRM nor QRN present).

NOW... the ONLY birdie which I've found, and which I would classify 
as even a possible problem appears around 1.855MHz, and it's not all that bad.

I think you'll be happy.

73,

Tom   N0SS