[Elecraft] K1 for 17/15 question (160/12/10 too)

[David Toepfer]

Has anyone ever worked out the mods required to do 160, 12, and 10?

Is it possible?

dt
.

--- Jessie Oberreuter <joberreu@moselle.com> wrote:
> 
> On Thu, 29 Apr 2004, Mike Morrow wrote:
> 
> > >The 4 band board is really two sets of two bands where each band set
> > >always has the cap for the the higher of the two bands permanently
> > >switched in, and the lower band cap(s) added when the lower band is
> > >selected (see schematic on-line).  With a little fiddling, you can come up
> > >with a wide variety of configurations.
> >
> > That's true only if you ignore the changes needed to the transmitter output
> > filter networks to accomodate any other choices.
> 
>      Sorry, yes, in addition to the four pre-mix and RF filters, you will
> need to make sure the output filters accomodate your bands as well, and
> this is where the number of options dwindles.  We should, however, be able
> to add 15/17/20/30 to the list of combinations that the board can natively
> support, eg remove C13,C14 and CN,CP, replace C11,C12 and CM,CL with them,
> replace C10 with a 2pf cap, and then re-work the 40/30 low-pass filter.
>      Folks who can get crystals for 10/12 experiements could also come up
> with some useful combinations.  Too bad we can't run cw on 60m :).
>