[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
> > 
> > 
>