[TenTec] Corsair II tuning

[Steve Hunt]

I should have added for completeness that it's a 5MHz IF with a 9MHz VFO 
mixing arrangement that produces a sideband inversion between 80m and 
20m. It also does away with the tuning inversion.

Steve G3TXQ

On 27/08/2018 09:24, Steve Hunt wrote:
> Using a 9 MHz IF conveniently gives you 80m and 20m coverage from a 
> 5MHz VFO without the need for heterodyne crystals; however it does 
> _not_ produce a sideband inversion. What happens is that the tuning 
> direction reverses - on 80m the RF frequency gets _lower _as the VFO 
> increases, and on 20m the RF frequency gets _higher _as the VFO 
> increases.
>
> If the 9MHz IF filter is, say, upper sideband, you'll get USB on both 
> 80m and 20m. It's one of those old "ham myths" that you get a sideband 
> inversion with that mixing arrangement.
>