EMRFD Message Archive 4595

Message Date From Subject
4595 2010-04-28 07:50:14 w5ida Source for Regen Receiver Parts
Some time back, there was a discussion on this group about the regenerative HF receiver shown on Figure 1.13 of EMRFD. I built one myself, and it was really a fun little project.

My only major problem was finding the variable capacitors at a reasonable cost, since I didn't have anything suitable in my junk box. As luck would have it, I came across an excellent source for these parts at Antique Electronic Supply (http://www.tubesandmore.com/). The part number is listed as C-V198, and it is a 4-gang capacitor intended for a GE broadcast radio that was apparently never manufactured. AES apparently bought thousands of these things and is now unloading them for $2.66 apiece. Such a deal!

The only minor problem is that the capacitors have a very short shaft and are intended for a knob with a D-shaped connection to the shaft. However, the shaft is brass and easily solderable. I soldered a piece of 9/32" thin wall brass tubing to the shaft, and this allowed me to use superglue to attach an aluminum shaft extension. The tubing is available at hobby shops and is used for fuel delivery in model aircraft.

As always, I have no commercial interest in AES, etc., etc.

4606 2010-04-29 07:04:55 Kenneth Ketner Source for Regen Receiver Parts
other sources for variable caps one can find thru on-line search are
Crystal Set Society, various crystal set fans and suppliers, also Dan's
Small Parts.

Kenneth Laine Ketner
Paul Whitfield Horn Professor
Institute for Studies in Pragmaticism
Texas Tech University
Charles Sanders Peirce Interdisciplinary Professor
Anita Thigpen Perry School of Nursing
Texas Tech University Health Sciences Center
Institute for Studies in Pragmaticism
Texas Tech University
Lubbock, TX 79409-0002
806 742 3128
Office email: kenneth.ketner@ttu.edu
Office website: http://www.pragmaticism.net
Personal website: http://www.wyttynys.net