[R-390] IF Amplifier...new information...

[Les Locklear]

Just the highest s/n reported at that time (2002)

Les


----- Original Message -----
From: Glenn Little WB4UIV <glennmaillist at bellsouth.net>
To: Les Locklear <leslocklear at hotmail.com>, <r-390 at mailman.qth.net>
Sent: 9/16/2019 8:34:05 AM
Subject: Re: [R-390] IF Amplifier...new information...
________________________________________________________________________________

So...
Does the 24 indicate that there were 24 pieces started or completed or ??

Glenn


On 9/16/2019 9:09 AM, Les Locklear wrote:
> I went into my old paper files and found some more information regarding spare parts contracts and specific info on the audio module you have.
>
> In 2002 Tom Marcotte N5OFF, Wally Chambers K5OP (SK) and I were involved with contract/order numbers on not just the R390 series, but spare parts, cabinets and other information regarding those particular R-390 series.
>
> Attached you'll see more manufacturers and comments regarding the Comm. Systems audio modules sent to me from Tom Marcotte in 2002.
>
> 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
>

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Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
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