[ARC5] More on the Pullen Mixer circuit

[Kenneth G. Gordon]

On 3 Jan 2017 at 23:47, Ron Barlow wrote:
 
> FWIW, I have constructed 2 different down converters that do not have an RF 
> stage preceding the Pullen mixer. They work fine. This design has a low noise 
> figure, and the lack of an RF stage is not a liability, at least up thru 30m, which is 
> the highest freq that I have experimented with, using the Pullen. I did use a 
> double tuned input circuit, to eliminate any potential image problems, but that may 
> not have been necessary, considering the relatively high IF freq that I was using.
>  I only needed a total of 3 triodes, in these converters, as the LO is xtal 
> controlled, so "pulling" is not an issue.
>    73 de ron

Thank you, Ron. That is very helpful and I am very glad to know this.

vy 73,

Ken W7EKB

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