... Leonard, you often read that low mu triodes make better regenerative detectors, but I think what the parallel triode experiments show is that it is low mu...
Very interesting idea, Rob. A tube version would need to use directly heated types so they could be turned off when not in use. I've used diode switching in...
The FET/Bipolar Two seems to be an interesting FET regen. But I see that this receiver wouldn't be intended for wide band coverage (for example from 49m band...
Sorry about that- RegensWU2D Folder. Yes absolutely, this radio is strictly for a narrow range and as with other radios, the secret of its stability and...
That’s encouraging results for a minimalist ham radio set. Two – or 3 - transistor receiver, and a single transistor transmitter of about 5-10 watts –...
I finally solved problem connecting a Gimmik wire to cathode of pin diode of 40 mt.Few centimeters are sufficent.Now the reaction contriol work on all band...
I hope you will all tolerate a question from an absolute novice. I think I understand that the point of the gimmick wire is to provide a couple of pf of...
Rob, I've been thinking about your idea of separate detectors for each band. The diode switching would be okay for solid state but I think it would be more...
Interesting regen showed up on Ebay for sale. A UK made Ivalek 3 transistor regen from the 1950s. Seems extremely rare as can't find a single reference on...
I found this signal generator schematic on the Internet But will this work I not been do any electronic work for over 30 years Can any one tell if this work ...
I just posted a change to my AGC amp to speed up attack and slow down decay. I may have to add another resistor with the switch so as not to load the amp when...
Yes, i suppose the cause of blocking it's the capacitance of switching circuit .. The solution it's not the best possible, but i don't have found others...
Thank you Al I change the out put of the 555 to sign wave. I have upload to the file section the new schematic. This so seems to simple to work. I also have a...
While browsing around the excellent Fun with Tubes site: http://www.angelfire.com/electronic/funwithtubes/index.html I found a link to a fascinating Nonlinear...
Very VERY interesting! Thank you for posting. Gary N9ZSV ... -- Gary Pewitt N9ZSV 1500 French Prairie Rd Booneville, AR 72927 [Non-text portions of this...
Thanks for the kind words, Rob. It's unfortunately an early draft, so there are some typos (eg, Armstrong's wife's name is misspelled as Marion, instead of...
Can't even fix a typo correctly. Reverse Marian and Marion in the paragraph below. Her name was Marion (nee McInnis). Aargh. Tom -- Prof. Thomas H. Lee Allen...
I recently bought a new multimeter with the ability to measure frequency. Can I use it to read the tuning freq. of my regen rcvr? The rcvr has a 6AQ5 tube. I...
Things to check: What input levels does the multimeter need? And what impedance does the meter present to the outside world? -- Prof. Thomas H. Lee Allen...
Most important question really is will the meter even measure that sort of frequency? Most normal hobbyist DVMs I have come across only measure frequency up to...
Tom, I will be quite interested in the book when it it released. Please let the list know when and where to buy it. As a true amateur when it comes to radio...
