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Hellenedyne: a new type of regen-reflex radio
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Hellenedyne: a new type of regen-reflex radio
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Hellenedyne: a new type of regen-reflex radio
elaich wrote:
wrote in news:496c922c-a06e-4e9b-a32a-69c2d97dd8d7 @g61g2000hsf.googlegroups.com: others are successfully using the Hellenedyne up to 25 MHz. my daily listener is a multi-tube homebrew of my own design (PDF pending). I intend to build your simple little radio, if nothing else, to prove that a one tube radio is a one tube radio. You can add regen to it, but it is still a one tube radio. I built one in 1967 - it could get my 5,000 watt local AMer, and that was it. Regen will help, but it can't even come close to even an AA5 for sensitivity and selectivity. Regenerative receivers have tons of gain and are very sensitive. |
Hellenedyne: a new type of regen-reflex radio
"Dave" wrote in message ... elaich wrote: wrote in news:496c922c-a06e-4e9b-a32a-69c2d97dd8d7 @g61g2000hsf.googlegroups.com: others are successfully using the Hellenedyne up to 25 MHz. my daily listener is a multi-tube homebrew of my own design (PDF pending). I intend to build your simple little radio, if nothing else, to prove that a one tube radio is a one tube radio. You can add regen to it, but it is still a one tube radio. I built one in 1967 - it could get my 5,000 watt local AMer, and that was it. Regen will help, but it can't even come close to even an AA5 for sensitivity and selectivity. Regenerative receivers have tons of gain and are very sensitive. Very sensitive, not bad selectivity, but a lousy noise floor.. |
Hellenedyne: a new type of regen-reflex radio
Dave wrote:
Regenerative receivers have tons of gain and are very sensitive. ....but have poor selectivity, poor stability and radiate like crazy. Probably explains why they became obsolete 60 or 70 years ago. |
Hellenedyne: a new type of regen-reflex radio
Doggy woked me up at about 5:15 AM this morning.I turned on my
radio.Howard Bloom was talking about fortunes made and lost on Tulip flowers/bulbs, other thingys too. Depressions come and go.I blame them all on those Crooked *******s in U.S.Fed govt! Hang Them High!!! cuhulin |
Hellenedyne: a new type of regen-reflex radio
howdy Telamon!
good hearing form you too! i'm having fun designing and building simple (often single active device) radios. others run them in contests. i listen to some kooks on shortwave. i would do more modern design but it's not as fun programming PIC's, designing PCB's, and "glueing" together chips. i would rather be winding toroids and soldering on tube sockets. regards, phil :) |
Hellenedyne: a new type of regen-reflex radio
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Hellenedyne: a new type of regen-reflex radio
hi Telamon!
actually i was not working with PICs, i only looked into them. do you have a favorite brand of MCU? i am not real up on them. btw, many had trouble with my Hellenedyne so i designed a more reproducible circuit. after much debate we figured out that the Hellenedyne was NOT working as i thought! it may actually be a new type of detector: it is a regenerative plate detector. i posted several PDFs. i now listen to shortwave on a single-triode, 27 volts of plate, using modern 16-ohm earbuds, and at normal-ish volumes! http://home.comcast.net/~phils_radio_designs/ Happy Holidays! phil :) |
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