Instead of the often suggested double heater transformer approach to PS, here's what I do: Use one 6V or 12V transformer for the tube heaters. For the B+, use...
Still playing with the two tube Novice Special... Well the suggestion that the screen and plate are effectively isolated in ECO oscillator fashion is true all...
Sounds like some good stuff there, Rob. So far, and for the past few decades I've been using our local Military Surplus outlet "Skycraft", located in Winter...
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Peter Leybourne
peter.ley08@...
Dec 1, 2010 1:49 pm
The problem with soldering direct to battery terminal is unsoldering and re-soldering 20 joints if the batteries require replacing. My solution would be to...
... The classical description of what the screen grid does--in addition to providing electrostatic screening in true screen-grid tubes (which audio beam power...
Ah, I remember the fun of Oki-Gomi days! Used to cycle around the neighbourhood looking for discarded treasure. Picked up all sorts of goodies. Do they not...
I downloaded scans of original HT batteries, print them onto cardboard and make my own using PP3s and battery clips; You can get 11 or so into a box, giving...
... Just a bit of correction: With the Mix/Goodman band-imaging scheme ( http://mysite.verizon.net/dpnewkirk/ej/goodman_receiver/ ) both bands tune in the same...
Picked up a 3 tube (two tubes plus rectifier Philmore little regen set two weeks ago. Been gone. Will have to check it out. Looks like 50s vintage kit....
I also have the Philmore in question. I just dug it out the other day and its also non working. Can't remember where I got it, perhaps an auction or flea...
Gotcha, Dave. I'm a little rusty at juggling the frequency mixing schemes "in motion" as you tune the LO or a stage after a mixer. You are adding frequency...
Well, I've got the power supply made and functioning, I managed to keep the a.c. hum down to a dull roar, I'ver verified that all the stages, xtal LO, Mixer...
Nick, 'sodai gomi' days are gone. Now you have to call up City Hall and they send a truck around to collect your oversized trash... for a charge. Anyway, while...
Hi Gary fascinating as usual to hear yor development struggles, hav you enough room for a small dipole got to be better than a 5ft wire . you could try a...
Hi guys. It's getting harder to find tube type stiff every day. Some of us have accumulated sizeable junk boxes over the years, but when we check out, what...
Gary, I think it might just be very poor propagation conditions. Along with fewer and fewer things to listen to, listen for, on shortwave. The 31 meter...
Leonard, This is now becoming a problem. If you think it is a problem now just wait untill the 3 - 4 year old grow up. I am more of an electronic hobbiest ...
Heh, I agree. And that, at several levels. :>) Oh, hey, guess what? Signals!!! Yay!! There's a net going somewhere around 14.220 or so, and lots of code!...
Hee, shades of King Spark! <grin> Actually, that's a very good idea! You know, the sets used during WW1 by both the "Old Contemptables" and the USAEC (we...
Leonard, the world does not want folks who are independent. I could write a whole rant on this. Sufficient to say, us old pharts need to do what we can do...
Gary, Derward, I tried to get my kids interested but only had limited success. One daughter got interested in building furniture and the other likes to work on...
The Global Elite who are running this planet don't want anyone to be independent, they are dumbing down the intelligence of the world's population by poor...
I already have a "one world government" but I don't mind as long as she keeps cooking & cleaning. I am the boss in my house, and I have my wife's permission to...
There is a principle called "casting bread upon the water" that addresses increase in lieu of giving. I've had that same thing happen: I'd give away stuff,...
I would LOVE to run into "bread cast upon the water" at a Swap meet or anywhere else, But Hamfests and Swap-meets do not happen any where near my QTH and...
I went ahead and posted a video of the Eavesdropper version of the Regenerodyne in actual operation on 20m ssb. I thought I would use a phone recording simply...
Hi Mr. Meek i collect ARC and SPARK stuff. Any thing radio pre 1928 speaker, AK BB crystal set and more. what do they have to sell ? Yes we are an endangered...
