LS,
Yes, the demise of available ceramic trimmers (original) and later the
demise of the wide range blue trimmers (1 to 40pF) used in both the K1 4
band board and the K2 bandpass filters (and wattmeters) has cause quite
a stir for Elecraft. The best trimmers now available have been supplied
with your K2 kit, and yes they are a bit harder to adjust then those
with a standard screwdriver slot, but a screwdriver can still be used to
adjust them. Use a blade width that is just a bit more narrow than the
diameter of the hole.
Similar capacitors have been used in the K60XV option and the KX1 for a
long time now - except those are bottom adjust where the new ones for
the K2 are top adjust. Read the errata to determine which color
trimmers go where.
Never-the-less, those are good quality trimmer capacitors that will hold
their adjustment over a long period of time. The experience with
similar trimmers used in the K60XV option and the KX1 indicate that
those trimmers are good ones to use.
Notice that they do have a flat side, so orient them correctly with the
flat side indicated by the silkscreen or the parts placement diagram.
73,
Don W3FPR
On 4/4/2016 9:23 PM, lstavenhagen wrote:
Interesting... the bandpass filter trimmers in my latest K2 have changed,
IMO, for the slightly worse in terms of quality. My first K2 (#6882 ) has
nice well made looking trimmer caps in it, but 4 of the ones in the new kit
are these barrel shaped ones that are kind of blah in terms of quality, and
a little dodgier to get a screwdriver into.
So maybe there are supply issues already affecting the K2 also?
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