[Boatanchors] R-388 51J3 & Mech Filters

[Larry WA9VRH]

Hi Robert and all,

The manual for the 354A-1 is on the CCA website if anyone is interested.

http://www.collinsradio.org/Archives/Collins_Radio_Equipment_Manuals.aspx

Just look for the 354A-1 on that page.

73 Larry WA9VRH
Collins Collectors Association Archive Manager

P.S. If anyone has any additional information on any adapters please let me 
know. I would like to borrow them to add to the website.
tnx Larry WA9VRH


----- Original Message ----- 
From: <WA5CAB at cs.com>
To: <Boatanchors at mailman.qth.net>
Sent: Monday, October 01, 2007 5:52 PM
Subject: Re: [Boatanchors] R-388 51J3 & Mech Filters


> Getting back to the subject subject, Collins made an adaptor to add up to
> three mechanical filters to the 51J-3 (R-388/URR) and 51J-2 S/N 501 and 
> above.
> It mounts in the area originally occupied by V107 (1st IF Amp) and T103 
> (1st IF
> Transformer).  It includes two 6BA6 tubes, one on the input and one on the
> output.  So technically, the receiver so modified would have four IF 
> amplifier
> tubes.  The instruction booklet says that one of the tubes was added to 
> make up
> for the insertion loss of the filter(s).
>
> I have the instructions but have looked for years for one of the kits with 
> no
> luck.
>
>
> Robert Downs - Houston
> <http://www.wa5cab.com> (Web Store)
> MVPA 9480
> <wa5cab at cs.com> (Primary email)
> <wa5cab at comcast.net> (Backup email)
>
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