Solid State I.F. Amplifer Replaces a tube?

[Edward Greeley]

Hey Pirate - take another look at the contract date on your item - 1952!
Look at the pack date - March 1953! There weren't any solid-state,
plug-in replacements for ANYTHING in those days. What you have is an
entire IF stage, including the sub-mini TUBE, the tuned inductors, and
the various resistors and caps to support the stage. Think of it as a
very early "integrated circuit." IIRC, the unit was used in the
AN/PRC-8/9/10 "breaky backy" walkie-talkie radio sets of Korean War
vintage.

Ed Greeley
Korean War vintage SigC instructor

Pirate Wez wrote:
>
> Hello Everybody,
>
> I have a military box that contains three gizmos. These gizmos look like
> solid state I.F. replacement tubes. If this is true I don't know which
> tube they replace? Can anyone help me? They have a seven pin miniature
> base. The military box data is:
>
> 2C448A-427
> AMPLIFIER, I.F., AM-427/U
> 4300 KC +-4 KC
> R.C.A. DWG. 628784-502
> 1 EACH
> 3374-PHILA-52-01
> ADMIRAL CORPORATION
> CHICAGO, ILLINOIS
> METHOD 1A-8  MVP
> DATE PKD  3-53
>

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=BOATANCHORS
To post - BOATANCHORS at LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/BOATANCHORS.html