They also mention type 12 tubes, and a couple of others, so apparently there was no set tube lineup for this radio. On one of the pages Tuska recommends a UV200 for the detector and UV201A for the RF and 2 audio stages. I have been involved in several discussions of what the correct tubes are. One thing I came upon that was of particular interest to me was a paragraph where they mention tubes.
There is a lot of good information in the articles you posted. I didn't even know the forum had been around that long. All before he was 30!įirst, I notice you joined in 1969!! Wow. Later, his company (and Armstrong license) was bought by Atwater Kent. In 1923, he co-developed the "Superdyne" modification to the regen technology, which resulted in your radio. However, as a commercial enterprise this would negate his amateur status, and would require his stepping down as a League officer.
TUSKA 228 SUPERDYNE RECEIVER RADIO LICENSE
His new company was awarded a license from Armstrong for the regenerative circuit. Tuska company in 1920 marketing educational kits, but the 20's radio boom proved irresistible. He was by this time head of his household, supporting his mother and grandmother. During WWI, amateur transmitting was suspended (and as Tuska received a commission as Lieutenant in the Signal Corps, so was the magazine)Īfter the war, Maxim rebooted the ARRL by selling bonds, and with some of the funds the League bought QST from Tuska, who then pursued his interest in manufacturing. Both the League and magazine are still active today. The following year (1915), he wanted to better coordinate the efforts of the league, so with advice from his uncle he founded the league magazine "QST". Later that spring, another club member, Hiram Maxim proposed the organization of radio amateurs to form relays so messages could go beyond their transmitting range, and the Amateur Radio Relay League (ARRL) was incorporated, with Maxim as president and Tuska as secretary (Tuska was still in his teens). Shortly after the government stepped in with regulation of transmitters with the Radio Act of 1912, Tuska got one of the earliest licenses (1WD) and the following January helped form the Hartford Radio Club. He was born in 1896, and got interested in wireless at an early age, building homebrew sets for himself and others before he was a teenager. Tuska 228 front.JPG Ĭlarence Tuska was an interesting guy, in case you are interested in the history attached to your radio. I can't believe Greg found the one that he did find.Ĭapture.JPG Ĭrude schematic of my set.JPG Schematics for these are about as hard to find as frog hair.
TUSKA 228 SUPERDYNE RECEIVER RADIO INSTALL
I believe the resistor marked 2 ohms is probably supposed to be 2 megohms and I am planning to install it, as I believe it is necessary.Ĥ: the two pots are wired differently than in Greg's schematic, and I believe those connections are unmolested.Īfter discussing with a couple of guys from radio Museum, I think possibly the schematic Greg found is for a model 301, which I believe might be a later model, but that is strictly a guess. Here are a few:ġ: The common side of the filaments on my radio are all tied together and appear original.Ģ: there is no evidence there was ever a bias battery on the output tube as shown in Greg's schematic.ģ: I can't find any evidence that the two components marked with a star were ever in this radio. As to differences, probably too many to mention here. I have attached the schematic from Greg, and a very crude schematic I created of what I think my radio was originally supposed to be. It is absolutely not the same radio as the one in Greg's schematic. There were several unconnected wires, several missing wires, and several obvious wiring errors. My radio is obviously the veteran of a badly botched attempt at some sort of repair or modification left unfinished. The DC resistance is approximately 1000 ohms.ġ: will the radio be able to drive the speaker I have pictured with either the 01A or the type 12 as an output?Ģ: if I modified the set to match Greg's diagram in the hopes of driving the speaker, will the value of the set be increased or decreased as a result of the modifications? My original intention was to offer this radio with a speaker a picture of which I posted with the original entry. I believe the model that Greg has found might have been intended to be used with a speaker, as Norm pointed out the #12 tube has more output. I now believe the set I am working on was in fact originally designed to have 4 01A tubes and was probably intended to just be used with a headset. I have concluded that the schematic Greg found, while extremely helpful, is probably for a later model. As this project progresses, I'm learning a little more about these Tuska regens.
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