On Sat, Apr 14, 2018 at 1:31 PM, MAuVE111 <info.mauve@...> wrote:
Thanks Lawrence for the memories,
Your scan rung a long dormant bell (nostalgia face here).?
Do they come from the ARRL SSB handbook, where you scanned it
from, or an original QST article sometime along 1965-1975?
Can't readily tell, but the pleasure doesn't change.
73 Nikos SV1IYF
HiOn 13/4/2018 11:41 ¦Ì¦Ì, Lawrence Galea wrote:
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.
