[Elecraft] KX1 power output question
David Toepfer
[email protected]
Wed Apr 21 15:50:59 2004
Sure enough, this resolved all of my problems. I could not seem to be able to
squeeze L2 enough to get a 0.3W power differential between bands, so I settled
for 0.25W (close enough I hope).
dt
.
--- David Toepfer <[email protected]> wrote:
> You know, I checked the connections and resistance on all of the toroid
> inductors and the transformer, but I forgot to double-check the turns. Thank
> you for this.
>
> What I saw this morning is that all of the inductors are wound right, but the
> transformer was wound wrong (6 turns on the primary instead of 8), which
> should
> result in an effective lower power output.
>
> All I had time for this morning was to remove it and rewind the primary.
> I'll
> have to rewind the secondary and install it tonight.
>
> I'll post the results to the list.
>
> Thank you again.
>
> dt
> .
>
> --- k4zm <[email protected]> wrote:
> > Dave:
> > I came up with the same output level on a KX1 I just built for a fellow in
> > Calif and it turned out to be the fact that I wound 1 turn too many on the
> > secondary of the T1 in the collector of the driver transistor Q5. I
> removed
> > a turn and it came right up to the specified 3.5 watts on all three bands.
> > You might want to check that one out. It is very easy to do.
> >
> > 73
> > Jim Younce K4ZM
> > K2 SN: 18
> >
> >
>