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Tramd, just an update from my direction.....

Certain parts of the Range Gain schematic look VERY different as you have already said.

On a lark.... I went to look at the Range Gain II SAMS (CB-13) schematic and "guess what"? It matches what Champo sees in his actual radio. The main area I am talking about are the MicAmp/Squelch amp tube. The CB-5 schematic has the two halves REVERSED from the factory manual schematic. Very oddly.... the CB-13 (Range Gain II, CB-13) has them correct!

Additionally in the area around V2... while parts are the same.... voltage readings are different from the CB-5 schematic... AND THEY MORE CLOSELY MATCH what Champo is seeing in his radio.

Not saying CB-13/Range Gain II is the RIGHT schematic....but I thihnk we are going to "add it in to the fold" as an additional resource as we go through this.

And, yet another thing.... even though the oscillator circuits are near identical.... the TX alignment procedure looks to be more straightforward. More of a "Tune for MAX" concept and does not require a sweep generator.

This really is an adventure!!!!!!

Bob

<blockquote data-quote="guitar_199" data-source="post: 774983" data-attributes="member: 18156">Tramd,&nbsp; just an update from my direction.....Certain parts of the Range Gain schematic look VERY different as you have already said.On a lark.... I went to look at the Range Gain II SAMS (CB-13) schematic and &quot;guess what&quot;?&nbsp;&nbsp; It matches what Champo sees in his actual radio.&nbsp; The main area I am talking about are the MicAmp/Squelch amp tube.&nbsp;&nbsp; The CB-5 schematic has the two halves REVERSED from the factory manual schematic.&nbsp;&nbsp; Very oddly.... the CB-13 (Range Gain II,&nbsp; CB-13) has them correct!Additionally&nbsp; in the area around V2... while parts are the same.... voltage readings are different from the CB-5 schematic... AND THEY MORE CLOSELY MATCH what Champo is seeing in his radio.Not saying CB-13/Range Gain II is the RIGHT schematic....but I thihnk we are going to &quot;add it in to the fold&quot; as an additional resource as we go through this.And, yet another thing.... even though the oscillator circuits are near identical.... the TX alignment procedure looks to be more straightforward.&nbsp; More of&nbsp; a &quot;Tune for MAX&quot; concept and does not require a sweep generator.This really is an adventure!!!!!!Bob</blockquote>

[QUOTE="guitar_199, post: 774983, member: 18156"] Tramd, just an update from my direction..... Certain parts of the Range Gain schematic look VERY different as you have already said. On a lark.... I went to look at the Range Gain II SAMS (CB-13) schematic and "guess what"? It matches what Champo sees in his actual radio. The main area I am talking about are the MicAmp/Squelch amp tube. The CB-5 schematic has the two halves REVERSED from the factory manual schematic. Very oddly.... the CB-13 (Range Gain II, CB-13) has them correct! Additionally in the area around V2... while parts are the same.... voltage readings are different from the CB-5 schematic... AND THEY MORE CLOSELY MATCH what Champo is seeing in his radio. Not saying CB-13/Range Gain II is the RIGHT schematic....but I thihnk we are going to "add it in to the fold" as an additional resource as we go through this. And, yet another thing.... even though the oscillator circuits are near identical.... the TX alignment procedure looks to be more straightforward. More of a "Tune for MAX" concept and does not require a sweep generator. This really is an adventure!!!!!! Bob [/QUOTE]

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