[Boatanchors] Want to buy some Parts For Receiver Projects

[wa9wfa]

Hi, I’m looking to buy some parts for some home made receiver projects that I am current working on and plan to build.  I’d appreciate if you could look in your junk boxes and help me out with parts that were once easily available in the 1960’s.  

I’d like to find:

1.  1 or 2 Miller 2112 365 pF dual section variable caps.
2.  Some Miller 455 Kc IF transformers, interstage like a Miller 1312-C2,  and output, preferably the newer slim chassis mount version like a 12-C2
3. Some Miller screw adjustable coil forms or coils like the 4411 that go up to maybe 350 or 400 uH.
4.  Miller MD-8 two speed vernier dial.  I’ve never ever seen one.  Has anyone ever used one?  I see it on the front panel of the HB-67 in the 1967 ARRL Handbook.
5. A couple voice coil transformers, small for a small receiver, preferably with multiple output impedances
6. Compression variable capacitors


I am currently working on a 3 tube 40/80 meter superhetrodyne receiver first published in QST April 1966.  I built a duplicate of Lew McCoys circuit last Spring, got it working a bit, but had a lot of struggles with it.  The circuitry was tightly crammed in the chassis so cross coupling of oscillators and amplifiers were a problem.I wasn’t ready to abandon it because there was much more to learn, so I am now building a breadboard version of the circuit that is spread out, separating sections, reducing cross coupling of oscillators, using coax for section interconnects, shielding, etc.. I put up a Youtube video of it last night. 

https://youtu.be/kEgELROqNtw <https://youtu.be/kEgELROqNtw>

 It’s a hot little receiver but needs more selectivity so I need to get the crystal filter working. The filter uses two military surplus 455 Kc crystals.  Once I’m done with the breadboard I want to go back to my compact version and figure out what’s wrong with it.

I was ready to be done building tube radios after struggling with the Mate but with this breadboard success I am jazzed up to build a more complicated one with Collins mechanical filter, AND AGC!  I am thinking of something similar to the HB-67 from the 1967 ARRL Handbook.

If you’re no longer building, or have spares,  how about giving me a chance to use those parts.  Many thanks! Let me know what you have. 

73, Scott WA9WFA