tag:blogger.com,1999:blog-7590176649168185428.post1842847494755556272..comments2024-03-28T06:58:15.720-04:00Comments on SolderSmoke Daily News: The Ladybird TRF (Regen!) ReceiverBill Mearahttp://www.blogger.com/profile/07662500663603350847noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7590176649168185428.post-55930033438911427452014-03-20T06:13:45.065-04:002014-03-20T06:13:45.065-04:00This lady bird radio was from my first book at 7 y...This lady bird radio was from my first book at 7 years old. All the "lady bird" books were kids books. I never built this one but I did build the crystal set earlier in the book. Colin.<br />K0lINkinggreenehttps://www.blogger.com/profile/00989872060108708932noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-85768868152203050292014-03-17T22:44:51.661-04:002014-03-17T22:44:51.661-04:00Regens are like 1st generation direct conversion ...Regens are like 1st generation direct conversion receivers.<br /><br />And face it, where would oscillators be if Howard Armstrong hadn't cooked up the regen? Reality says you can see the regen as a stage that goes into oscillation, or an oscillator that can be stopped from oscillating.<br /><br />And don't forget "supergainers" a concept from the thirties launched by Frank C. Jones apparently. A regen with a converter ahead of it, or looked at differently, a superheterodyen receiver with a regen receiver as the IF strip.<br /><br />That sort of receiver got a lot of play towards the end of the regen time, simple receivers that were better than just a regen (if nothing else, putting them on a fixed or limited range makes tuning easier, and the converter stage isolates them from the antenna). Late fifties/early sixties, they seemed to thrive, especially in portable or mobile equipment, a last gasp before direct conversion receivers took over from regen receivers in the "simple receiver category".<br /><br />And then don't forget the q-multiplier a regen stage added to the mixer output of a 455KHz IF superhet, to add selectivity. You could get those even for fancier receivers like the Collins 75S receivers, except there, they were generally used as a notch filter, rather than for peaking.<br /><br /> Michael VE2VBW<br /><br /><br /><br /><br /><br />Michael Blacknoreply@blogger.com