[Elecraft] K1 Band Boards

[Mike Morrow]

Dave speculated about the KFL1-2 filter board:

> ...aren't all the boards the same except for the frequency
> determining parts (toroids and caps)?

Yes, plus the two heterodyne crystals.

> you could just swap out those parts on your 20/30 board.
> Pretty sure the caps and cores would still be available
> somewhere,

Plus the two heterodyne oscillator crystals.

> somebody is bound to have the winding instructions for
> the toroids for 40 and 80.

All the winding info is in the instructions for the KFL1-2, found on the Elecraft site at:

 http://www.elecraft.com/manual/E740020%20KFL1-2%20instr%20Rev%20I.pdf

There were a lot of surplus 40/20m filter boards after the KFL1-4 came out in 2001.  Perhaps someone has one for sale, to have 20m parts replaced with 80m parts.  There was also an RFC and capacitor that had to be added on the K1 RF board for 80m operation.

FWIW, somewhat bizarrely, links to documents for the KFL1-4 four-band filter board are missing from the Manuals and Downloads page of the Elecraft site.  Now the two needed files must be selected from this link:

 http://www.elecraft.com/manual/?C=M;O=D

or reached directly from these two links:
 
 http://www.elecraft.com/manual/KFL1_4_man_rev_A.pdf
 http://www.elecraft.com/manual/KFL1-4%20Errata%20Rev%20A-4.pdf

It seems to me it would be better to have all this info still available directly at the Manuals and Downloads page for the K1.

Mike / KK5F