Ge evening Allison.

I mentioned it because of the two fets used in cascade at the front end and the use of agc.

It's design being nearly 50 years old is a totally different concept.

As you said the semiconductors are obsolete but one could use modern ones if they want to do so.

However, I have scanned the article which is hereto attached.
I scanned it at 600 dpi so I had to split it into three PDF files because of the 20 Mb attachment limit.?

Regards to all.

Lawrence

On Thu, Apr 12, 2018 at 2:48 PM, ajparent1 <kb1gmx@...> wrote:

ARRL Single Sideband for the Radio Amateur 1970 p193 et seq.

"An Engineer's Ham-Band Receiver"

I've duplicated the PLL for another radio and copied ideas for radios I have built.
They worked very well.

Three reasons its not a fit for uBITx......
One: the MOSFets used disappeared in the late 70s.
Two: Its a narrow band front end using varicap tuning, usually called a preselector. Lots of band coils.
Three: is it would require much switching to take it out of the transmit path.

Allison