[R-390] IF Amplifier

[Nick England]

FWIW - Photos of Glenn’s unfinished IF deck at
http://www.virhistory.com/ham/shelby-19/IMG_3490.JPG
http://www.virhistory.com/ham/shelby-19/IMG_3491.JPG
Cheers,
Nick

On Mon, Sep 16, 2019 at 8:41 AM Les Locklear <leslocklear at hotmail.com>
wrote:

> Glenn and group,
>
> That was a spare parts contract awarded to Communications Systems Corp. in
> 1966  for audio modules. They also manufactured Veedor Root Counters
> order/contract no. SM-C-249195. And, audio cw filters. They were located in
> Morton Grove, Illinois.
>
> Glenn, look closer at the contract number. I have it listed as
> FR-11-022-C-C-26418(B) That example was in a 1967 EAC s/n 4743.
>
> There are several other manufacturers that manufactured spare parts
> modules under separate order/contract numbers. Stewart Warner, Clavier
> Corp., and American Transformer Coil located in Richmond Hill, Long Island,
> NY.
>
> Les Locklear
>
> ----- Original Message -----
> From: Glenn Little WB4UIV <glennmaillist at bellsouth.net>
> To: <r-390 at mailman.qth.net>
> Sent: 9/15/2019 7:46:47 PM
> Subject: [R-390] IF Amplifier
>
> ________________________________________________________________________________
>
> I have an IF Amplifier that was never completed.
> It is part number SM-C-343621.
> I have heard that there are two versions of the IF amplifier and suspect
> that this is the first and was pulled from the assembly line when the
> second or later version was approved.
> There is another number that I do not recognize on the IF Amp.
> FR-11-C22-C-4-26418(E), possibly a contract number.
> If there were two versions if the IF Amplifier, what were the changes?
> I would like to build this amp as if it were a kit to ensure all
> resistors are in tolerance and the capacitors do not leak.
>
> Any ideas?
>
> 73
> Glenn
> WB4UIV
>
> --
> -----------------------------------------------------------------------
> Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
> Amateur Callsign:  WB4UIV            wb4uiv at arrl.net    AMSAT LM 2178
> QTH:  Goose Creek, SC USA (EM92xx)  USSVI LM   NRA LM   SBE ARRL TAPR
>
-- 
Nick England K4NYW
www.navy-radio.com