I'm sure this topic has been brought up in the past, but I can't seem to find anything on them on a search.
I have a 453714 and a 228480 serial number radios.
The lower serial has the battery and the higher, a cap for the memory backup.
My service manual from 10/1994 doesn't make an reference I can find on a battery or capacitor that I can find. It's a REV E, and I see a manual on the bay that is a REV B. So that would tell me there were 2 revisions between the 2 I know about, so 5 different revisions or more? So every revision must have had a change somewhere or they wouldn't have printed newer manuals...but I could be wrong.
I think the thing I like most about these radios is the stable SSB
Just thinkin out loud
I have a 453714 and a 228480 serial number radios.
The lower serial has the battery and the higher, a cap for the memory backup.
My service manual from 10/1994 doesn't make an reference I can find on a battery or capacitor that I can find. It's a REV E, and I see a manual on the bay that is a REV B. So that would tell me there were 2 revisions between the 2 I know about, so 5 different revisions or more? So every revision must have had a change somewhere or they wouldn't have printed newer manuals...but I could be wrong.
I think the thing I like most about these radios is the stable SSB
Just thinkin out loud