[Elecraft] KFL1-4 Trimmers

Tom Hammond NØSS [email protected]
Tue Feb 19 17:10:01 2002


Well, I've certainly been dead wrong before, John. Guess I should have shut
up.. <G>

I'll double check again...

OK... here's the dope on the question at hand, and THEN we'll actually
respond to Jerry's question which really DOES (I think) refer to the (FWD &
REFL) POTS, rather than to the caps!!!

The trimmer CAPS in the KFL1-4 DO have the rotor of the cap connected to
the pin at the ROUNDED side of the cap. I just disassembled my K1 and check
them out!

Now, to answer Jerry's question...

The two blue-topped trimmer POTs have a LARGE flat and a small flat (on the
back side).
The 'flat' referred to in the manual is the LARGE flat.

73,

Tom  N0SS

W2AGN wrote:

Could be different with the new trimmers, but I checked one of the old kind I
had from an unbuilt 2 band module, and the flat side was connected to the
adjusting screw, therefore ground.

       John L Sielke   W2AGN

 >On Tuesday 19 February 2002 15:28, you wrote:
 > > What I believe John may have forgotten to say was that what he 
describes is
 > > the way to determine WHICH of the two pins is to be connected to GROUND...
 > > however, this appears to NOT be the flat side, but the more ROUNDED side.
 > > So the flat side would be the pin NOT connected to the adjustment screw of
 > > the CAPACITOR.
 > >
 > > Note - I got this info from comparing scans I made of the (UNPOPULATED) K2
 > > PC boards, incl. the RF board. I looked at the scan of the top of the 
board
 > > and can see that the LEAST NARROW side of the capacitor is connected to
 > > ground. So the 'flat' side you are looking for is the MOST NARROW side.
 > >
 > > 73,
 > >
 > > Tom  N0SS