[R-390] Incomplete IF module

[Tim Shoppa]

Glenn Little WB4UIV <glennmaillist at bellsouth.net> wrote:

> Some years ago I bought an incomplete IF module from a surplus house. In 
> cleaning this weekend, I uncovered it.
>
> The module is marked
> SM-C-343621
> I.F. FINAL ASS'Y
> FR-11-C22-C-4-26418(E)
> SER. NO. 0294
>
> The module has the tube sockets, RF connectors, T5-1-T503, Z501, C506, 
> TB501 and some small parts mounted. Very little has solder on it.
>
> Is this a rare find?
>
> Why would it have the serial number assigned before completion?
>
> Thanks
> 73
> Glenn
> WB4UIV
>
>
>
>
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Is it possible this was not a "half-built" module but a "built,
torn down for spare parts, and the begun to be rebuilt" module?

For reasons that I do not fully comprehend I've seen lots of
stripped-down IF modules over the years, almost always missing
the BFO and often missing some other parts.

Tim.