When using high side injection, sidebands are reversed and tuning is
backwards. We found this back in the 90's when we first got on 10GHz using
12 GHz Cal Micowave LOs. A 94 MHz LO is bo problem 144-50=94.
Now a 144 to 222 may be more possible. 222-144=78 but the second harmonic
of 78 is 156 which is close enough to 144 it might cause desense. A +17dBm
LO to the mixer is a whopping big signal on 12 MHz away. My guess is Steve
at DEMI could answer these questions
Personally, I prefer a second radio for coordination.
Terry Price - W8ZN
Directive Systems and Engineering
703-754-3876
On Wed, Sep 17, 2025, 9:12 AM VE3KH via VHFcontesting <
vhfcontesting@contesting.com> wrote:
> Hi
>
>
>
> It would seem that some might want a 144 to 50 transverter so that one
> doesn't need a second radio for 6m in VHF contests.
>
> Any solutions?
>
>
>
> 73 Kevin VE3KH
>
>
>
>
>
>
>
> _______________________________________________
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> VHFcontesting@contesting.com
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>
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