Hot and cold live demo of transistor failure was fantastic and scientific, too!
@zidane2k1
3 жыл бұрын
I thought it was interesting that the “works / doesn’t work” transition is rather sharp and not gradual.
@1959Berre
3 жыл бұрын
The concept of a fuse is above the intellectual abilities of the public.
@MrHBSoftware
3 жыл бұрын
they dont even demand spare tyres on cars anymore and if they have one they cant use it
@stevexray6253
3 жыл бұрын
Most couldn't pour used water out of a boot with the instructions on the sole.
@brianfletcher9774
3 жыл бұрын
“Looks like a rabbit took a dump in it”...I gotta quit drinking coffee when watching a Shango video ! Lol
@terryvaughn8466
2 ай бұрын
Thankyou for your videos. I really enjoy them. I love that you try things other repair men wouldn't. Really you learn a lot by experimenting and I learn a lot from your videos. When I was a kid I got a zenith "Royal" transistor radio for my birthday. I didnt know what a transistor was. But common knowledge was at the time ,the more transistors the better radio and the more it cost.
@mrmobodies4879
3 жыл бұрын
I enjoy this channel and look forward to the next video. I see precision and genuine skills at work fixing things and being conversvative and sensible with the parts.I am learning stuff easily out of interest through these videos that I always wanted to learn but couldn't understand without someone like this so good explaining in detail what they're doing, how it is suppose to work and what went wrong and the fix. I think it is under represented like many other good channels out there.
@miata1492
3 жыл бұрын
Shango066's politics seem to be based on common sense, so rock on, brother.
@RoughJustice2k18
3 жыл бұрын
Shango for president.
@matthiasmartin1975
3 жыл бұрын
Common sense is certainly verboten in LA.
@LakeNipissing
3 жыл бұрын
"Oh, a tone control, what a touch." Shango, you never fail us with awesome comments !!
@shango066
3 жыл бұрын
FIRST
@dirtydon8661
3 жыл бұрын
shango066 𝗬ou so crazy.
@jpolar394
3 жыл бұрын
I see said the blind man as he picked up his hammer and saw.
@billmyke746
3 жыл бұрын
Stop looking at me, said the blind man to his deaf wife.
@golfman9290
3 жыл бұрын
I am blind, but i'm able to read through a marvelous new invention called broille, i'm sorry i'll just feel that again. By the late great Peter Cook, English Satirist.
@kareno8634
3 жыл бұрын
I Second.
@bluemetal04606
3 жыл бұрын
Just waiting for a time when old technology will be the new currency.
@matthiasmartin1975
3 жыл бұрын
I think there is literally no one like shango066. I wish there was, because I enjoy this kind of content so much. I mean, Mr. Carlson is super satisfying to watch because of the level of perfection, but he his not an acomplished comedian like our host here. I like my conspiracies, camera reviews and electronics repairs spiced up with top notch comedy, so that's how i select the channels i watch.
@MrHBSoftware
3 жыл бұрын
mr calrson pseudo repairs vintage stuff that has been inside a condom, the stuff he "repairs" seems to be new old stock almost...no dust no rust no rot...he also make me fall asleep by saying 10 times "we will be doing this and that" and not doing it...he spends hours talking about safety and that we will all be killed if we dont install an earthed plug blah blah blah...if i just want to watch the repair i am alseep by then...its too bad because i think he is very talented but he makes a 1 hour video with 5 minutes of content..i dont care how good his Mic is or how soothing is his voice, i just want to watch diagnostic, testing, repair etc
@45AMT
3 жыл бұрын
It's hard to beat a Zenith but i always liked the older Sears and Silvertone radios. They contracted many companies even companies not many have heard of but they always seem to perform good.
@johnderossi825
3 жыл бұрын
Watching your videos got me back into vintage radio repair. Thanks Shango!
@teacfan1080
3 жыл бұрын
Any station to go 100 years is amazing. Up in North Dakota where I live, there's one in Devil's Lake that's been going since early 1925, same call letters, KDLR. We also have been getting the smoke up here lately, probably not near as bad as you've had but it's made for some awesome sunsets! Nice collection of radios!
@DriveInFreak
3 жыл бұрын
The "Viking" was sold as an "Electro Brand" at Monkey Wards for $3 in the late '70s and early '80s. I remember that because I was amazed at the time that you could get a radio for $3. For some reason the - wire always came loose from the battery snap after about a year's worth of chaging the battery. Being a kid at the time, I didn't know that you could just strip back the wire, so every time it would break, I'd just go buy another one. They were also cheap enough to experiment with. I learned how to do alignments on one of those by just going at it with a screwdriver until I figured it out. That's a great education for $3. 8 ) Yes, I still have one...and yes the - wire broke off of the battery snap.
@LakeNipissing
3 жыл бұрын
"Viking" was a house brand for electronics sold by the Canadian department store chain called Eaton's.
@DriveInFreak
3 жыл бұрын
@@LakeNipissing That particular radio sold under almost countless brands, and about as many colors: www.pinterest.com/backrow3/variations-of-the-same-radio-3/
@watershed44
3 жыл бұрын
@DriveInFreak Wow I haven't heard Wards called Monkey Wards since the mid 70s! Good times and good memories, things seemed to be much better back then, well at least most people seemed better and more outgoing too.
@tedcowart3647
3 жыл бұрын
Great video! Love that big Sears radio. I've got to find one to add to my collection. Thanks!
@johnnytacokleinschmidt515
3 жыл бұрын
I like it also. Unique in it's own way. Black and chrome accents. Sharp appearance.
@jarien2
3 жыл бұрын
I love USA vintage radios 👍
@joebrock9784
Жыл бұрын
And I said it once I'll say it again you're an American Patriot sir and we appreciate your point of view and these repair videos that you put up with interesting just some of us and help a helpful to some of us that messed with it so drunk
@zerohundred5218
3 жыл бұрын
this is how I got started in vintage electronics in my pre-teens back in the early 80's. I would find these in the dollar box at my local thrift store.
@nickfrench7372
3 жыл бұрын
That,s the kind of oldies music I listen to here too in Australia. You're a legend in restoring these old vintage transistorised radios,,,with very little parts required. Goes to show u that how good these radios were well made back then,,,compared to 2days modern radio technology,,,hopeless.
@waltschannel7465
3 жыл бұрын
The sound quality and fidelity of the Zenith 50 and 40 are pretty good, despite their size. Better than the Sears. Nice logical troubleshooting. I like to follow along and figure out where you are going with your efforts.
@JerryEricsson
3 жыл бұрын
Sure glad you rode out the quake with no problems. I think if I were a resident of LA I would sell out and move to South Dakota, but do it in the spring, you MUST experience South Dakota when she is warm so you know why we put up with the frozen winters! Finally sold mom's house got 45 thousand out of her, it was built in 1985 2 bedroom in wonderful shape on 2 lots central air and heat includes some furniture. We close in 8 days, thank GOD! It will be nice not to have to worry about that any more, I need to split the money with my 2 sisters (RIP) kids as is mom's wish. Love those vids on the little transistors, I loved those little pocket radios. When my eldest sister passed away her daughter gave me 4 old pocket radios, I got 3 out of the 4 working again, one needed some caps the others just some touch up on broken solder traces. I did recap them anyhow just to have something to do, plus I have a TON of caps from a bundle of capacitors I ordered from a little electronic outfit in Arizona. They sell quality goods but it looks like it is sweepings from their storage area or something. It all works, but there is stuff in there that I still have NO idea what it is. Anyhow thanks a million for the videos, they take my mind off the recent loss of my wonderful wife of 51 years 4 days. Well back to Fthr. Brown on PBS>.....
@radiorexandy
3 жыл бұрын
Glad you came through the earthquake all right. Anyway, you certainly have enough emergency radios :-)
@williamsquires3070
3 жыл бұрын
The Sears radio is almost big enough to hide a 3-1/2” floppy drive in! 😎
@jamesv833
3 жыл бұрын
I grew up listening to knx1070 and 1110krla, still listening to 1070, 1260 as well 640 and I’m glad to listen to them on some classic radios(mostly tube) that I’ve restored. Can’t wait for the old ham swap meet to open up at trw again, glad I can watch your vids(and others) when I’m out of projects myself.
@Musicradio77Network
3 жыл бұрын
In the old days, the KNX ident was heard at the end of each episode of the “Andrews Sisters Show” from 1945.
@LakeNipissing
3 жыл бұрын
Fortunately the earth quake was not too serious. I would give anything to have your warm weather, Shango... already below freezing overnight here, and only high 40s for the daytime.
@cipherthedemonlord8057
3 жыл бұрын
Learn something from your videos everytime I watch in this case determining if a transistor is bad. And now for 🇺🇸 pride I want a Zenith pocket radio to replace my Philco.
@oxtrolopitecux
3 жыл бұрын
Maybe the Discovery or Historia channel or even the National Geografic channel could make a documentary about "The spectacular life of SHANGO066 on KZitem" ... I, for example, have been following this elder of electronics for some good years ... the cosmic knowledge that this one offers us .... spectacular ... that it continues like this for many years and that the health accompanies it .... and that I and others can watch .... of course THANKS SHANGO066
@gerardcarriera7052
3 жыл бұрын
OMG! I've always loved your videos but you almost literally killed me laughing to death with your "ad" for the Westinghouse Escort. Thanks!! I needed a good laugh and you did it with that! Keep up the good work!!!!!!!
@fredflintstone8048
3 жыл бұрын
Here's another love comment to offset all the hate comments.
@tarstarkusz
3 жыл бұрын
After all of their de-fund the cops stuff, they are now begging for police protection in places like Minneapolis. It's amazing what a little car-jacking will do to your attitude about law and order. They know not what they ask for.
@alex1520
3 жыл бұрын
lmao. almost choked on my coffee laughing when that started :D too funny
@TerryMcKean
3 жыл бұрын
"It looks like a rabbit took a dump in it!" - Shango066
@TerryMcKean
3 жыл бұрын
Good one, Shango066., and true too :-D I remember when I was little and my folks took me to Zody's Department Store and I bought a Viscount 14-transistor pocket radio with my birthday money. Mine had the same circuit board as that one but the cabinet was sort of a faux-deluxe... looked like a fine little deluxe model but it had that faked circuit board inside. :-)
@kareno8634
3 жыл бұрын
I come here for the LA Update on Politics. BONUS ~ Radio Fixit stuff! Thanks!
@joeblow8593
3 жыл бұрын
Thanks also for the KNX soundbites near the end. I never picked up KNX here in the mid south although I did pick them up when I visited Phoenix a number of years ago.
@Musicradio77Network
3 жыл бұрын
And speaking of KNX, there was an old time radio show that mentioned KNX was the “Andrews Sisters Show” when it was originally called the “NK Music Showroom” and it was a short lived variety music show from 1945. There was one that mentioned towards the end of the show where it would go like this. “KNX, you Columbia station, Los Angeles” and ended with a sound of a bell where it was cut off where it gives you the time and temperature.
@funwithmrchris729
3 жыл бұрын
Great video.I too enjoy working on transistor radios more so than tv sets.I have a lot of Zenith transistor radios,got them all working great.They preforme well.I believe Arvin made some of the old Sears radios and other Sears electronics.
@VectraQS
3 жыл бұрын
The KNX jingles were so catchy that I was going to see if I could find the whole thing -- and then it turned out you already included it. Neat to hear a lot of those old clips. Some of them sound like they were sourced from CBS-TV -- the announcement of RFK's death has that old network audio phone line quality, and the clip from the '68 DNC is definitely from when convention security infamously roughed up Dan Rather on the air.
@dampandrew
3 жыл бұрын
Yes the telecommunications analogue technology I am very autistic, I can’t stop fixating on radios, guitar amp, TVs, cassette players. I am infatuated by the sound of this fuzzy audio quality piercing my eardrums. I have an extreme obsession to fabricate my own vacuum toob radios out of junk it is my dream.
@bigalsmallengines
2 жыл бұрын
That Westinghouse is cool! LOL Shango RULES!!! 🍻
@intell2OOO
3 жыл бұрын
dude! your comments are GREAT ! especially about analog clock, which my current GF cannot read :-D
@rogertyler3237
2 жыл бұрын
That Sears Radio Is A Keeper.
@radiotvphononut
3 жыл бұрын
That Sears set was sourced from Arvin (132 model number prefix). Arvin and Sears had a long term relationship and Arvin continued to supply electronics to Sears, long after they stopped offering consumer electronics under their own Arvin brand name. In the late '60's-early '70's, Arvin started going off shore with it's consumer electronics production. I've got the 8 transistor version from '67 and I think it's still USA made.
@loucopormotoradiocia2520
3 жыл бұрын
Que coisa mais linda !!! Ótimo receptor
@markb6811
3 жыл бұрын
REALLY looking forward to the Westinghouse Escort video!! I have two of these excellent radios. Both work fine but the watch on both has stopped running. Disassembly is a nightmare. Will be interesting to see how far down the rabbit hole you are willing go with it lol Thanks for your awesome videos, I have learned alot from you.
@markmarkofkane8167
Жыл бұрын
Cool stuff. The Sears looked really nice. Love all of the radios. Maybe they used a single ear phone at the ball game. 😉
@cardboardboxification
3 жыл бұрын
my zenith royal 7000 and 3000 are my favorite right now
@masoudmontazery907
3 ай бұрын
Good luck sir and happy spring 🎉... masoud from IRAN ...
@shango066
3 ай бұрын
In or from?
@tectalabyss
3 жыл бұрын
Thank you for sharing.
@bobbyk6585
2 жыл бұрын
The antifa bit at the end had me laughing out loud. Just love that Shango.
@fredflintstone8048
3 жыл бұрын
Happy birthday KNX
@Musicradio77Network
3 жыл бұрын
And so does KDKA. Happy birthday to both KNX and KDKA.
@connorm955
Жыл бұрын
132 = Arvin. And according to the FCC ID site, they made stuff for Philco, Magnavox, Yorx, GTE Sylvania as well as Sears. It's under the Arvin Indistries Similar Registered Businesses section.
@sweirich777
3 жыл бұрын
Antifa Special 🤣, you have a Awesome sense of humor! Can not wait to see that radio repaired! Keep up the great sarcasm man! And the great videos! Been watching you for a number of years! I almost hit my head falling on the floor laughing my ass off years ago when you read a letter and telling a fan he was number one by the finger gesture 😆 when it came down to changing capacitors and such, what a great video! Talk later! Kb3hay
@TerryMcKean
3 жыл бұрын
I start the video and hear "...earthquake just happened..." and immediately pause that video and scroll down to the comments to say: Wow Shango066, that reminded me of experiencing the San Fernando Quake of February 9, 1971. I lived in Sun Valley then... definitely friggin' rocked and rolled. Ok... got that ^^ outta my system... back to the video :-)
@TerryMcKean
3 жыл бұрын
Well that was fun and informative ;-) Thanks for sharing, Shango066, and Happy Centennial to KNX 1070. I remember listening to that station back in the day. It came in fine in Sun Valley. KMPC 710 was the one that would make a crystal set sit up and sing where I lived back then :-)
@sheldonlatimer6688
3 жыл бұрын
That little seats radio sound good
@carlrudd1858
2 жыл бұрын
"turn us on at night and just keep on drivin'"
@michaelrobertson575
3 жыл бұрын
I wonder if it was possible to go from two to just one I.F. Stage when more modern Silicon Transistors came along and still get the same sort of performance?
@denniseldridge2936
3 жыл бұрын
Wow, listening to modern radio broadcasts on a vintage radio sounds like voices from way back then. But very clear sound for all that. It's funny that I grew up in a time when these were just nothing special. Very nice. Also, I have to comment on the sound quality of the Sears unit - **very** nice, and very full sounding, in contrast to the smaller units. It would be interesting to plug this into a larger audio system.
@randomsteve4288
3 жыл бұрын
4:30 The batteries you have in mind are probably the type A23 aka V23, MN21, GP23, LRV8, 23A. Since the A23 opens easily to reveal the stack if 8 cells, it may also be interesting to those in need of the elusive and expensive single LR932 cells. That is why A23 cells are aka 8LR932
@Musicradio77Network
3 жыл бұрын
And then, there was KDKA in Pittsburgh, PA where they recently celebrated its 100th anniversary back on Monday. Same as with KNX.
@Masterkill45588
3 жыл бұрын
Hey shango, why not take the battery holder from that zenith that had a transformer issue? You said it couldn't be fixed anyway. Seems like a good parts unit to me.
@siskokidd
3 жыл бұрын
Too bad this isn't a social site which allows the sharing of images. I would show my fav portable radio - a Realistic Minisette-12, AM/FM, cassette player/record radio. Operates off 6 double A's, or 9 volt jack. I picked it up at an estate sale for a fiver years ago. With minimal visible wear, it only needed some power supply wiring repair work done inside. Lovely looking and sounding bit of electronics from the mid 80's.
@piotr_jurkiewicz
3 жыл бұрын
lovely! 😍
@Elfnetdesigns
3 жыл бұрын
A23 is the 12-volt battery you were talking about.
@jsurfinreverbchristmassurf3560
3 жыл бұрын
Some of 1960s Sears are made by Arvin. The 1963 I've seen you fix I believe is made by Warwick. Got one and really love it. One website shows a picture of the Arvin from I believe 58 and the Sears all the way up to 60 three or four and the virtually identical.
@gerardcarriera7052
3 жыл бұрын
Chassis prefix number is 132 which is Arvin. If it was Warwick, it would be 564.
@annaplojharova1400
3 жыл бұрын
The 40..50 Ohm speakers are for 9V halfbridge output stages, the 3V ones use around 16 Ohm...
@annaplojharova1400
3 жыл бұрын
...both for about 100mW output...
@MrJohndoakes
3 жыл бұрын
8:10 That "Sears" has to be one of the loudest portable transistor radios Shango has ever worked on.
@Musicradio77Network
3 жыл бұрын
Sears, Where America shops
@twistedyogert
3 жыл бұрын
I'd rather things be made in Japan rather than China.
Because japan is a democracy. If you buy from japan your money at least goes to productive people. If you buy from china you support an awful, corrupt system that treats people like garbage
@juslitor
3 жыл бұрын
@@WolfmanDude Corruption is everywhere where money is.
@chrisingle5839
3 жыл бұрын
That Westinghouse at the end looks fantastic! Bet the batteries die fast with the light on and the cig lighter cooking..
@Guitarhero1000
3 жыл бұрын
Hey Dan, any chance you could do more vintage video gaming systems?
@v12alpine
3 жыл бұрын
Felt it in San Diego. Lasted only a few seconds.
@lewispommells234
3 жыл бұрын
Here in the UK all electrical plugs are fused with either 3, 5, 10 or 13 Amp fuses; maximum you can get from a single outlet is about ~3000w. It's pretty common here for people to change fuses, surprised it isn't a common thing over in the USA.
@badscrew4023
2 жыл бұрын
So those signal tracers - what are these? Just audio amps with switchable detector diode probes?
@rogertyler3237
3 жыл бұрын
That goldish amber panasonic I Seen Those. It's the color of those old Norelco Coffee makers with the amber Lid on the glass pot. The rest of The Coffee maker was black & silver.
@groovy_beast674
3 жыл бұрын
What year do you think the sears silvertone solid state 12 transistor radio was made? In the 60's or 70's, just curious
@franciscocpaim
3 жыл бұрын
Germanium transistor radios was realy good receivers, good sensivity and low noise.
@soupflood
3 жыл бұрын
I didn't get to Mexico apparently Why not add two 1.2V Ni-mh with a small charging module (or not) and charge it via USB? 17:23
@jackallen6261
3 жыл бұрын
Awesome!!
@williamstevens7090
3 жыл бұрын
Can’t wait for the Antifa special.
@LyonsArcade
Жыл бұрын
I was gonna buy one of those Westinghouse Escort's you were selling to Antifart but then you warned us it was made in Cheena, can't do it man :)
@ntsecrets
3 жыл бұрын
If you plug that fused plug into an outlet with a metal plate can it short out to it?
@onefootinthegroove39
3 жыл бұрын
I’ve got a couple of those plugs and have never had that issue, the fuses are recessed a bit.
@edwardallan197
Жыл бұрын
The Chinesium speaker sounded great! Electro-Brand was in the bottom tier of these as I recall. Some were a slightly better value. It was just to listen to strong local stations. People who liked a DX station knew to shop up.
@rogertyler3237
3 жыл бұрын
We had an oldies station here in the Twin cities called wwtc 1280 am. I don't even play Radio anymore.
@ikarosalpha8783
3 жыл бұрын
don't stop the political commentary I love it
@JerryEricsson
3 жыл бұрын
You know years ago, up in Canada, the government required radio receivers to have a license that they had to renew yearly to listen to AM Radio. To enforce this law, they had detector trucks that drove through the neighborhoods, they could actually detect any receiver playing in a home simply by driving by the house. So radios do put out a signal when they are receiving, this always amazed me.
@huntercarver1851
3 жыл бұрын
I want to see that Westinghouse radio with the lighter. Has a video been made because I couldn't find one?
@mikey1321
3 жыл бұрын
I can easily hear KNX in the Boise area at night. Does anyone remember CBS channel 2 in LA as KNXT?
@alphabeets
3 жыл бұрын
We stand with you, brother Shango. And another great video. Thanks for all your work putting these videos together.
@christopher88719
3 жыл бұрын
The end of this video was just awesome!!
@aerofart
Жыл бұрын
OMG, LOVED the commentary at the end of this video. ROFLMAO
@janosnagyj.9540
3 жыл бұрын
The Antifa advertisement was... something to be taught at sales schools :)
@waltschannel7465
3 жыл бұрын
51:00 Ray McMackin (sp) later worked for KING TV 5 in Seattle. He was a sports anchor and editorialist, in the days when those were seperate functions. Interesting to hear his voice reporting for KNX.
@hattree
3 жыл бұрын
I have that same color Royal 50.
@danielhorne6042
3 жыл бұрын
anyone wondering what the clear plastic speaker type is its Mylar i think apparently waterproof ?
@justincase3880
2 жыл бұрын
I wonder how well a Crystal Set would work with my OCF 80m dipole …
@pizzaface4079
3 жыл бұрын
I want a Zenith, hard to find one.
@thenewBH
3 жыл бұрын
54:30 based shango
@SatomiForward
3 жыл бұрын
Shango, I couldn't find your contact info, I'm on the east coast and I'd love if you could respond. I'm rehabbing and resurrecting a KV-1913, haven't found a service manual but I've found its service sheet inside. Would love your feedback, but I know it's a long shot
@shango066
3 жыл бұрын
Not listed on the Sams photofact website?
@tomhoehler3284
3 жыл бұрын
You'll never hear one peep of hate speech out of me. You speak truth, unvarnished, unspun, no BULLSHIT. Anyway, with the smoke and fires and riots and earthquakes, you are welcome to move to higher and safer ground here in the Midwest. Please relocate before the whole sorry state of California breaks off and falls into the Pacific, thus ruining and polluting a beautiful ocean! Stay safe Shango!!
@Musicradio77Network
2 жыл бұрын
And speaking of KNX, I heard the news that KNX has gone to FM, and it is now being heard on 97.1. And guess what! KNX at 1070 AM is simulcasting on FM at 97.1. Thanks to the loss of a lone CHR format known as “97.1 Now” since the station didn’t do well against these stations like iHeart’s KIIS’ “Kiss” which is still at the top of the CHR game where listeners can go there to bring its audience from the loss of KNOU. You should do a video about the end of “97.1 Now” and the launch of KNX Newsradio on 97.1 FM.
@shango066
2 жыл бұрын
Yep
@Musicradio77Network
2 жыл бұрын
@@shango066 originally 97.1 was originally began as a beautiful music format in the 1960’s and then went to country in the 1970’s, and then in the 1980’s it became Top 40 which would later become CHR, and then went to a Spanish station in 1985 for a short time and then went to a rock format for a few years and then to a “Hot Talk” format as “Free-FM” in the 2005, and then in 2009 came a CHR format known as “Amp 97.1”, and then in 2020 came “97.1 Now” for a year and then pulled the plug and began simulcasting KNX Newsradio 1070 now being heard on 97.1 FM.
@shango066
2 жыл бұрын
@@Musicradio77Network yep its Heyday was having Tom Leykis. 97:1 one now had a rotation of about 10 to 15 songs. They literally could have had one CD on random play and that was the entire station. I will cover it on this weeks video
@adrianfrigo8373
3 жыл бұрын
The end was epic!
@monkeyboy4746
3 жыл бұрын
4.5, I didn't think they paid any attention to a 4.5. Now down in a mine, it may have been exciting.
@rogertyler3237
2 жыл бұрын
At least You Have Good Oldies Music Station To Listen To. we Have Cool 108 up here. I Remember AN 1 130 WDGY 97.1 KTCR 104.1 KJJO They Wh'er All Good Country Stations.
@user-tc5nk6oq7u
3 жыл бұрын
Good good hi Abdul
@cat-lw6kq
3 жыл бұрын
I'd like to see the diagram of that 12_transistor radio.
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