[Milsurplus] R1451A/WLR-6 - One More Time

[Jim Whartenby]

AlYour photo reminds me of the FRR-23 receiver in that there are four modules, Antenna, 1st RF, 2nd RF and Oscillator-Mixer.  The problem I found in repairing my examples is that the Antenna coils were often fried due to transmit RF getting into the receiver.  Since you can get decent reception by bypassing the Antenna module perhaps the same problem I found exists in the modern solid state version?
I'll pass this reply onto a Navy buddy to see if he might have some information on the R-1451 receiver and hopefully a manual.Jim
I wonder why people argue over the 10% of their differences and ignore the 90% they agree on? 

    On Sunday, July 7, 2019, 02:47:21 PM CDT, Al Klase <ark at ar88.net> wrote:  
 
  Gang,
 
 Thank you to everyone who weighed in on this.  I must say I'm amazed at how many of these are in captivity.  I'll host any documents that show up on my site, and maybe even do some scanning if the Jersey Boys come through with paper.
 
 I made some progress on my set.  See:  http://www.ar88.net/pix/R-1451A/Troubleshooting%20A1%20-%20RF%20Head.png
 
 So I'm really in need of, at least, the RF No. 1 board schematic.  Has anyone been inside one of these.  I'm assuming step one is to disconnect the shaft coupler between the front panel and the band switch.  Then get the module out of the radio, pull the shaft, and extract the board.  (There's a tool for that included.) 
 
 VY 73,
 Al
 
 On 7/7/2019 2:35 PM, John Watkins wrote:
  
 
 I think I have some of those dual gate FETs somewhere, going through all of those treasures and will let you know if I find them.  
  John WD5ENU  
  On Sun, Jul 7, 2019 at 09:54 Al Klase <ark at ar88.net> wrote:
  
  Gang,
 
 Is there any documentation on this receiver beyond what comes up on Google?
 
 I got this RX in 2001, and it worked pretty well, kind of a solid-state SP-600 with a nixie tube readout.  Now, it still tunes, but is profoundly deaf.  It hears  stations at about 0 dBm.
 
 I do have a module-interconnect diagram that's better than nothing.  Let me know if you'd like a copy.  (It's a shame these lists aren't opened up to support reasonable sized attachments.  I can tell the moderator how to do this if he's interested.)
 
 Regards,
 Al
  -- 
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

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Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

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