|
Post by BBB on Jul 11, 2016 10:30:08 GMT -5
This Pearce Simpson Sentry radio was forced upon me by the guy that sold me the Executive CTZ-100D. He literally chased me down on my way to my vehicle to say it came with the other radio. Well I think he just wanted to get away from from his tailgate sale so his lovely wife took over the selling and he got a legitimate reason to wander around and shop for himself It looked like any other old '60s transistor CB at first. I was surprised to find it is indeed a tube hybrid. Evidently right on the solid state/ tube changeover timeline as there are tubes in the PA section and transistors in the receiver section. In fact several transistors are in sockets, like Nuvistar tubes. Freaky. I've yet to find a schematic for the Sentry but it may be similar to other Pearce Simpson models?
|
|
|
Post by BBB on Jul 11, 2016 10:48:23 GMT -5
|
|
Sandbagger
Administrator/The Boss
Posts: 6,247
|
Post by Sandbagger on Jul 11, 2016 16:31:17 GMT -5
You have to consider the time period. Tubes were still in vogue and transistors were not all that reliable or have a long service track record yet. So since tubes were in sockets for easy replacement, it stood to reason to offer the same servicing convenience for transistors. Eventually, when transistors became more reliable, and didn't weaken with age like tubes, they decided to save a few pennies by removing the sockets.
|
|
n4fv
Mudduck
Posts: 1
|
Post by n4fv on Jul 17, 2020 13:40:24 GMT -5
Ever find a schematic?
|
|
Sandbagger
Administrator/The Boss
Posts: 6,247
|
Post by Sandbagger on Jul 17, 2020 19:32:26 GMT -5
Hopefully sometime in the last 4 years he did..... :-P
|
|