[Heathkit] HW100/101 final tank coil

[Edward B Richards]

Dick et al;

I have seen them wound the way you describe.

Ed   K6UUZ

On Tue, 18 Nov 2008 19:03:20 -0500 "Dick KF4NS" <kf4nsradio at verizon.net>
writes:
> Ok guys, I just discovered something I had not noticed in the 38 
> years 
> I have been using my HW100, servicing and modifying it.
> 
> There has always been a problem with poor power output on the 10M 
> band. I exhausted all the possible causes long ago and followed all 
> 
> the steps recommended. I even squeezed and expanded the add-on 10M 
> tank coil that sets on top.  Nothing worked so I just gave up until 
> 
> now.
> 
> I was working on the tank load capacitor which had gotten very tight 
> 
> over the years. The shaft is fine and so is the bearing, just hard 
> to 
> turn so I cleaned the thing with some CRC and then lubed it the best 
> I 
> could, short of the dreaded removing of the cage and tuning 
> capacitor, 
> and it has loosened up considerably. Enough for that.
> 
> Then I happened to notice that the last 3 turns (part of the 10M 
> band 
> switching section) of the tank coil on my original coil, are wound 
> at 
> an angle slanted toward the rear of the rig, out of the coil form 
> grooves  and unevenly spaced. I wonder if this is the root of my 10M 
> 
> tuning problem.
> 
> I would greatly appreciate it if someone who has a final tank coil 
> that they can look at, would check and compare it with my 
> observations. This fine radio works as great as the day I built it 
> in 
> 1970 except for the low 10M output (about 50-60W).
> 
> 73, Dick KF4NS
> St Petersburg, FL 33714 USA
> Keep The Glow! 
> 
> 
>