I have the original manual for mine and it's just a TR-4C with a few added pages and a sticker added to the front cover.
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
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On Wednesday, April 2nd, 2025 at 2:28 PM, Paul Christensen via groups.io <pbc.law@...> wrote:
Thanks, Peter.? I¡¯ll have a look.
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Paul, W9AC
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Paul:
Check under the sub-directory?of "VERSIONS".? That's where there are three files that refer to the TR-4CW/rit in my very early K4OAH "CD".
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On Wed, Apr 2, 2025 at 10:25?AM Paul Christensen via
<pbc.law=[email protected]> wrote:
As I recall, there¡¯s no TR-4Cw/RIT manual as such.? I¡¯ve been relying on the non-RIT manual with a two-page RIT addendum.?
But if I¡¯m wrong¡I would sure like a copy.
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I do have K4OAH¡¯s TR-4C service manual but the included schematic does show D6.? Did he produce a service manual specific
to the Cw/RIT model?
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Any informed guesses as to why there¡¯s no PTO Zener regulation in the RIT model?
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Paul, W9AC
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Good point Jim.....the zener is there (D6) in the late TR-4C's, and probably the TR-4CW's, but it's not in the TR-4CWrit.
My bad.? I recall Garey telling me he'd documented over 40 different
electrical versions of the 4-line PTO's.? I need to do a better?job of keeping up!
Not likely to happen though.? I'm too old.
Mark - good to hear you got the PTO rebuilt OK and at least it's working fine.
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There is no Zener in the PTO schematic you posted. :D
