[R-390] IF Amplifier

[Glenn Little WB4UIV]

I have a number of modules that I got many years ago from a scrap yard 
in Charleston, SC.
These were sold as scrap by DRMO Charleston after they were chiseled out 
of the chassis to chisel out the "gold" connectors from both the module 
and the chassis.
They are pretty beat up but should provide most of the parts to complete 
the chassis.
A long project, but gives me a module that has no paper caps and no out 
of tolerance carbon comp resistors and can be built with TFE insulated wire.

73
Glenn
WB4UIV

On 9/16/2019 9:28 AM, Barry wrote:
> Reminds me of an old "King of the Hill" cartoon where Bobby finds a spark plug and then begins to fantasize that if he could find a frame, wheels, motor, pedals, and a steering wheel, he could finally have a go-cart.
>
> Good luck finding those parts...
>
> Thanks,
> Barry - N4BUQ
>
> ----- Original Message -----
>> From: "Nick England" <navy.radio at gmail.com>
>> To: "R-390 HF Receiver List" <r-390 at mailman.qth.net>
>> Sent: Monday, September 16, 2019 8:06:49 AM
>> Subject: Re: [R-390] IF Amplifier
>>
>> 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
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-- 
-----------------------------------------------------------------------
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
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"