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The Radio Shack 150 in 1 kit would have made my day in the early 1960's when I was a preteen, but this came out in the mid 1970's when I was well into my 20's and I was repairing Radios, stereos, TVs, etc..

General Radio was located in Burbank, Ca not too far from my location. General radio made some mighty fine radio equipment in their hey days!

What I don't understand about these designs is how do you get the carrier for the AM modulation? If the PWM audio signal is switching the RF on and off, wouldn't you get "double sideband supressed carrier" because in-between the PWM pulses, there's no output.

Really well set out. Nice. Each tube has its own heater battery (I think). Surprised it didn't oscillate as both coils are parrallel and high q. Maybe you have a tiny bit of regeneration because of this. Nice video.

Absolutely fascinating.

Great video Mike, as always - even three years after you uploaded it 🙂. Around 16:55 you discuss the interstage transformer. The primary and secondary impedances you mention, and the values on the R29 schematic, give a 1:3 impedance ratio. In most writing I've seen about regens though, and in your own videos on the low-voltage regen, it's the turns ratio that's 1:3 so the impedance ratio is much higher. Typical valve interstage transformers in the '30s also seem to have had turns ratios of 1:3 or 1:3.5. Is the R29 set a special case, and if so can you recommend a source for that transformer please? The turns ratio would be a bit unusual - only 4:7 or about 1:2. Thanks.

I am the brother of @videodistro. One correction on his post, I was 15 or 16 when drafting the schematics for the 150 in 1, not ca young boy, more like a young man. I still have the Japanese version of 80 in 1 kit that he translated (with help) into English. The Japanese kit was dual language (poor English) and was call, “New My Kit 80”. Mine is in working order. It is marked made by Gakken, so I suspect Tandy Corporation bought the rights to it from them. After my father, who is still alive at 92, finished converting the 80 in 1 kit to full English market, he began work on expanding to the 150 in 1. I do NOT have a copy of the 150 in 1 kit, but I do have the 200 in 1, which is in excellent condition. My wife works at a re-use store and bought it when it came in to the store. If I remember correctly, the guy who worked on the 200 in 1 started with my father’s work and just expanded on it. I remember him contacting my father for ideas. My father was a contractor working for Tandy and the guy who made the 200 in 1 was a full time employee. THANKS FOR YOUR REVIEW OF THE KIT!!

Mine was banished to the local landfill long ago.

I had one of these as a kid!

I had the 20-in-1 kit; the 'key' you are using is from that kit. Components were on blocks you clipped together. I loved it and had hours of fun, but certainly lusted after the 150-in-1. Great upload thanks. Matt 2E0LNS

I never had one growing up so I picked up a 75 in 1 off eBay in pristine condition a few yrs ago. Every circuit I tried wouldn’t work - drove me crazy. After much frustration I finally removed the board and found that the wires weren’t soldered to the springs! I cleaned and tightened all connections and tested all components. It works fine now. Thx for another great vid Mike!

I just looked in my closet and found a 65-in-1 Project kit that I got for $2 at a garage sale years ago. Time to play with it now that I'm retired. This one was copyrighted 1972 and has cartoonish drawings accompanying the schematics and wiring diagrams.

Bravo = Well done video

It was like Morgan electronics for kids fifity years ago. No flashing of chip things. Thanks for the look back space monkey and all.

These kits are rare in the UK, probably due to the Tandy/Radio Shack presence was not as large here as in the USA. Rules here have relaxed a little and you can run small transmitters to enable your use of old broadcast radio....and even if you do get caught, our prisons are so full, they need to make spaces, so the new government will let you out when you have served just 40% of your sentence! It sounds like a joke but it is actually true! God bless the UK 🤣

No, actually. When we went to, say, Woolworth's back in the early 1960s, I didn't go to the toy section, I'd head straight to Plumbing & Electrical. Didn't want a toy, I wanted the Real McCoy. My first electrical/electronic project was a control panel made from a wooden fruit crate. It was the control panel for my imaginary space ship. I was inspired by that big flashing control panel on _Voyage to the Bottom of the Sea_ that just debuted that fall (that same panel also featured on _The Time Tunnel_ in 1966). My panel had light switches and a gaggle of neon pilot lights, and an outlet into which I plugged one of those rectangular Sylvania 'Panelescent' night lights. That was my radar screen. I'd stick little bits of a broken magnet on it and those were alien ships I'd encounter as I explored the galaxy. Built a crystal radio from an article in one of my older brother's hobby magazines and put that in a second crate (both of which I painted black) along with a couple more pilot lights. That was my Communications Center. I had loads of fun with it while listening to the latest pop songs on the crystal set; A Hard Day's Night by the Beatles, This Diamond Ring by Gary Lewis and the Playboys, King of the Road by Roger Miller. All those great hits from back then. Radio station KOZE in Lewiston, Idaho. When they signed-off around midnight, I could hear KSL in Salt Lake City, 600 miles away. My first DX! I can't think of a single toy I had as much fun with.

Man I would've traded my little brother for that radio had I known about it! But then, I would've traded him for PB&J sammich, too. 😄

Someone got into the and pull the wire off or disconnect the wires

Yes I found that the antenna lead were pull on both kits I had to fix that part

My dad designed that kit. He also drew (drafted) all the schematics with some help from one of my brothers who was a young boy and wanted to help. He developed and wrote all the content for the 150 in 1 kit for Tandy/Radio Shack. He taught Missionary Radio Technology for 21 years before becoming a transmitter engineer in the John Hancock building in Chicago. He's now 93 years old and will enjoy seeing this video. Thanks!

If you are interested in Diode 1SS86/Hitachi pls go to my main page.

If you are interested in Diode 1SS86/Hitachi pls go to my main page.

Feeling very emasculated now… I only had my ‘21-in-1’ Transistor Lab from Allied Radio / Knight Kit. I did have to assemble the thing… mount all the parts and solder the resistors, etc. to the printed circuit board. I was 12. A year later or so my Boy Scout leader said ‘looks like you know how to solder’… he worked as a technician for the Bendix Corporation in their missile division. 😊

I don't have mine anymore - but I do remember it fondly.

Is that face you made for the receiver made from micarta???

I have the BC-348-Q, as well as a few other Signal Corps receivers. 73 Paul AA1SU

I use to own a Hallicrafters S-40 from Hollywood

I have several of these kits from different makers and years, would never have learnt how to read a schematic without them.

I found a vernier dial just like the one you have on ebay. I think iam going to pick one up!

Robinson Crusoe On Mars, one of my favs :) The only thing that I didnt like about it was Batman<(aka, Adam West) gets killed off in the first 15 minutes,, :(

Brings back memories 😂😂

Excellent video Mike! I used to have something similar growing up. Thanks and 73.

, I still have my 150n1 kit i got for Christmas when I was a kid almost 50 years ago!

Wonderful initiative, remembering the anticipation when getting one for Xmas many decades ago. Indeed many components need to be checked for corrosive connections. There as some ok AM radio circuits in there and some transmitter ones. Just found some interesting Science Fair AM MW transmitter kits on eBay.

Another excellent video. I used to purchase science toys for my relatives to promote engineering careers.

I still have the 100 in one I got for Christmas in the early 70's. The book is ragged, as I grooved on that kit. I also have the same 150 in one, but sans book. scan? post? 73 de W3IHM

When I speak about that I would like to go back in time and just stay there ! This is what I am talking about !

hahhahahaha i feel sooooo old now ... WVO

Wow seeing that took me back to my Radio Shack and Sears Christmas catalog days.

I ahve a later 130-in-1 but I think one of these older ones was gifted to me around a year ago.

YYYESSS!!! Still have and love mine!!! 😊😊😊

I found a complete 200 in one at Goodwill for $5.00. Fun video

All I can say is: more cowbell. Fine business OM -Kb1isp

Where would be, WITHOUT WD40 and DEOXIT ?? The world would end.

That was fun next a fill Tx and Rx on the AM BCB.

Whats next? Are you going to design your own? G7VFY

Amazing...just to restore the real old time !

"You say you want to talk to the monkey?" 🐒 😂

What type/model tube are you using???

Great series on the Command sets! I've played with both the receivers and transmitters for years, and put the 40m TX in the AWA contest. The TXs sound just fine if you regulate the osc and screen grid B+! I picked a number of useful tips from you, like exercising the TX variable caps and the 2830 kc Q-multiplier. Good ideas and good workmanship: thanks so much! 73, Fred VE1FA