Well after a little more than a year of off-an-on progress I finally finished it and I'm very pleased with the result. I posted a photo album of the finished...
Richard; Congrats on a job well done! You have joined the elite although growing group of those who have completed a Theremin based on my design. Back when I...
Hi Richard, Congratulations for your work! The wiring looks perfect, and your coil winder seems great too ! I have a question about the octal plug you use : I...
Mark and Jean, thank you for the kind words. Jean the octal plug is vintage 1940s/50s and is made with a groove around the circumference to hold the snap on...
Richard, thanks for your answer. Concerning the antennas, you may know that Mike Buffington has built several RCA reproduction antenna sets, as you can see...
Jean; I would recommend solid (not tubing) brass. 1/4" can be formed by hand for the volume loop, but 3/8" is going to be fairly difficult. I did try making a...
Mark, infact, I was planning to use 8mm solid copper (rather than brass), because I know someone who can give me the necessary length of it. Moreover, copper...
Jean; The conductivity will make no difference whatsoever. I *think* that brass is easier to nickel plate than copper. As I recall, it takes one more step...
... Richard... An inspiration indeed. I enjoyed the detail in you post and perhaps I can incorporate some of that in my build. I am at the very beginning...
Therm friends.... I am looking for a cross connect solder lug mount to use in both the audio and power chassis. Looking on Philip Neidlinger's web page, I...
Jack; Keystone makes the terminal strips. Since you're local, be sure and check with Tony at Cascade Surplus, which is out around 178th and Division. ...
... I am heading to Cascade today. So I will check them first. ... OK. I ended up paying $65 (which I thought was a fair price) for both chassis from...
... Wow! The price is right! ... OK. Thanks. I was at a loss as to what to use myself. ... I want to use period looking wiring between the two chassis, and ...
Jack; Okay, if the chassis are painted top and bottom, you'll want to scrape away the paint where the terminal strip lug mounts so that you get a good contact....
Surplus Sales is great! I was first there arond 20 years ago. It was mostly hydraulic related surplus. Now, they have expanded into not only new equipment...
Jack, According to the information I have, the HF-15 is 2.8pf - 17.5pf. The HFA 15B is 2.8pf to 16pf which should work. Mark was telling me it doesn't take...
... ********************************* I think I answered my own question. I found this Hammarlund chart: http://www.rfparts.com/caps_hammarlund.html It looks...
... Richard.... Well, it looks like mine should work fine then. I have never removed a rotor plate before on a cap like this. Guess I can figure it out. If...
Jack, I have tried this very tube in a guitar amp, and, like just everyone would admit, it can't get close to a good NOS tube. The JJ, like every new 6V6 I...
Hi Gents, It's pitty but causing me a lot of headake... I have couple of variable caps form USA; there are two screw holes on all of it. But I don't have...
Pala; The mounting screw is most likely what we call "4-40", although it's possible it could be "2-56" or even "6-32". The first number is the size, the second...
Hi, Thank You! Now I know the magic conversion too: 0.06"+0.013" x first digit : gives the diameter in inch ( x 2.54 and I got the dia. in our metric system) ...
Hello everyone, I've just had an idea, which may be a figment of my imagination, that's why I'm asking: wouldn't Litz wire be useful in the pre-mixed section...
Jean; I've never had problems with oscillator stability. I would be more interested in knowing why some have. Litz wire is designed to reduce the skin effect...
