If you are using a Johnson external VFO (Model 122) - it will give you 160
meter frequencies without worrying about the oscillator too much.
I once made an SB-101 sort of work on 160 by coupling RF from a Meissner
Signal Shifter (at 1.8 MHz) into the grids of the finals and stuffing some
ferrite into the tank coil and adding some capacitance. I probably put out
as much RF on 80 meters as I did on 160, but it was enough to work Kentucky
(N4AR/K4GSU) from Southern California with a very low dipole.
Tree N6TR
On Wed, Oct 29, 2025 at 10:07 AM Lee Boulineau via Topband <
topband@contesting.com> wrote:
> GM Jeff,
> Maybe an easier exercise would be to convert one of the 60s to 160m only?
> This might be especially useful if you are going with crystals only.
> Initial thoughts are:
> Add parallel capacitance to both C22 and C24.
> Rewind L3. and L2 for 160.
> L1 may or may not need to be altered. The oscillator circuit is a Pierce
> circuit which usually behaves pretty well. L2 is likely the main tuning
> element for the second amp/doubler circuit so only L2 may need to be
> rewound.
> You can bypass the bandswitch; that simplifies matters a lot. :
>
>
> 73 de Lee KX4TT ZUT
>
>
>
>
> On Wednesday, October 29, 2025 at 12:43:19 PM EDT, Radio KH6O <
> radio.kh6o@gmail.com> wrote:
>
> I have a couple of Heath DX-60 transmitters. I'd like to convert one of
> them to 160. This would involve re-doing the 80m section of the rig.
>
> Does anyone have a step-by-step article to do this? I did an internet
> search but found nil. Maybe one of the magazines (QST, 73, CQ, HR) might
> have run an article on this way back when.
>
> 73,
> Jeff KH6O / 6
>
> NNNN
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