Electronics Adventure - 1940's Transmitter - Will It Work?

Let's see if this old 1940's transmitter will come to life. This is the transmitter section to the forestry radio receiver / transmitter combination.
To learn electronics in a very different and effective way, and gain access to Mr Carlson's personal designs and inventions, visit the Mr Carlson's Lab Patreon page here: / mrcarlsonslab
#learnelectronics #repair #restore

[@MrCarlsonsLab]

To learn electronics in a very different and effective way, and gain access to Mr Carlson's personal designs and inventions, visit the Mr Carlson's Lab Patreon page here: www.patreon.com/MrCarlsonsLab

[@connorsvintageelectronics909]

Im a big fan of your channel and started my own radio collection

[@inerlogic]

Any of these Aerovox capacitors you come across marked as being from New Bedford, MA? During my freshman year as an EE major we took a tour of Aerovox in NBMA

[@Daveyk021]

What happened with the BC348Q restoration you were going to do after that last radio job?

[@stevemercure902]

@@Daveyk021 I was wondering the same thing? That's not to say this series is not good. I'm learning a lot with this project.

[@Daveyk021]

@@stevemercure902 That's the project I am most looking forward too. There is not a lot of that radio on KZbin. I had one in my teens and got a lot of use out of it. Back then I was not worried about thinking I would want reminders of my youth. Sad how time passes ans effects us. Anywho, I have a BC348Q and a BC348R I want to get in to restoring.

[@repairitdontreplaceit]

wow mr carlson and glasslinger content out on the same day , what a time to be alive :)

[@W1RMD]

I was going to comment exactly the same thing!

[@anandarochisha]

2 national treasures..North and South of the border..

[@restorerestoration4705]

There's always an adventure with Mr Carlson. For a life time I hope..

[@genestatler2514]

I'm lovin' this restoration Paul since I was an Army radio operator in Korea in 1954-55. It's always great to see you do your magic with these dinosaurs. Best wishes from Tennessee.

[@LarryDeSilva64]

Amazing that the transmitter is working at all with the scrambled up mess under the chassis. And it is even getting power out and modulating that is incredible for something that old when you haven't even changed any parts or tubes. Thanks for the video Paul always entertaining.

[@panthony1525]

There's always an adventure with Mr Carlson. For a life time I hope...

[@jeffclark2725]

Well said,

[@alberteinstein3078]

Who's lifetime?

[@gordonwelcher9598]

Thats a real nice radio. Looks like it's made in Canada, eh. Too bad its got no AM broadcast band. Maybe you would pick up some very excellent tunes by Anne Murray.

[@jeffclark2725]

@@gordonwelcher9598 haven't heard that name on a long time

[@DavidTipton101]

These units were made to last, I wasn't surprised it worked. Very interesting project Paul, I can't wait to see what you find in the open transformer 🙂

[@MrCarlsonsLab]

Thanks for stopping by David! As for the transformer, myself included.

[@donl1846]

Thanks Professor Carlson for resurrecting this old transmitter to life and all the other classic radios you have done, nothing like seeing something work after being silent for so many years. These radios were built like a tank, and probably weigh like one.

[@johnbellas490]

Hello Paul!! It was good seeing that old transmitter come to life, even for the simple C.W. aspect only if need be. It's a wonder that the electrolytics came up to a somewhat usable level!! Can't wait to see the restore of both the transmitter and receiver!! Thanks for a GREAT VIDEO as always!! 73's from KC2UVN.

[@rimmersbryggeri]

That spring washer contraption is basically a clutch,

[@alberteinstein3078]

Contraption?

[@VivianLund]

I enjoy when Mr. Carlson revives zombie transmitters!

[@psionl0]

Nice to see you show proper respect for the high voltages in the chassis. Too many KZbinrs seem to adopt a "do as I say, don't do as I do" mentality.

[@johnbode2756]

I just love seeing early 20th century wiring

[@DiverCTH]

Hmmm, 1972 was before WARC, and 3.316 was Radio Mogadishu in 1990. I wonder if/when that chunk of spectrum was reallocated, and whether or not Ranger Gord is still using it.

[@RobertTKlaus]

Been waiting so long, I'm so glad you're finally doing some Ham type stuff!!! Can't wait to see a Gonset done, That's what got me started way back. I would like to get a 6M version and follow along, then at least there is a chance of a 6M AM contact. Thanks!

[@gooseneckful]

An electronic tech among that pile of equipments is like to be in paradise :-) I have looked lots of videos and your are kinda top in electronic. I am electronic tech also, worked 20 years at components level with scopes, now i am more with Spectrum analysers since i am working for cable company. That reminds me old cool days.

[@MrDoneboy]

Excellent video, Paul. You really explained everything, in an easy to follow format!

[@stephensams709]

Great video Paul! You've done an awesome job of dialing in your audio for these videos. Since I normally watch these videos using my stereo speakers, I find the sound very pleasant and natural to listen to : )

[@thecircutandgameguy1018]

these videos helped me restore my own radios thanks for making them

[@Zonfeair]

Thank you Paul. I can't wait to see the restoration.

[@tombrockman6225]

I really enjoy all the video's Mr. Carlson...But wanted to say I'm very anxiously waiting to see the restore of the RCA AR-88

[@guyh3403]

You sir are very smart!

[@s_p7231]

On a side note. The microphone you use is phenomenal.

[@nyckhampson792]

Yes it is , picks up everything

[@jimthvac100]

Thank you for explaining things in a way that is easy to understand. Not sure what you do in the real world but you would also make a great teacher.

[@Daniel-M7BCE]

Another fantastic video Paul. Thank you!

[@faxcapper]

Thoroughly enjoyed this one, Paul. Looking forward to the reno video.

[@basspig]

I enjoy watching your videos. They make my lunch and dinner time much more enjoyable and keep the mind stimulated.

[@W1RMD]

Great to see you doing projects again. My computer didn't let me know about your new video until AFTER my lunch! Oh well, I get to have "dinner with Mr. Carlson"! Thanks and best regards!

[@HavingFunRepairs]

Wonderful, I never leave a video without learning something. Appreciate what you shared with us.

[@MrCarlsonsLab]

My pleasure!

[@althepal6818]

I use regularly a 1945 « all original » No. 19 wireless set. All components are original from 1945 including the power supply with selenium rectifier. Astonishing but true, it works perfectly and I make regular contact in CW and sometime in AM.

[@NigelDixon1952]

There was an army surplus shop in Meadow Lane, Leeds, and they sold loads of 19 sets way back in the 60s. Back then they were mostly brand new in the box. I didn't have one myself but I used to set them up for my school friends. Oh to hear those dynamotors again! When I explained they needed a 12-volt supply they'd 'borrow' their dad's car battery, then try to explain how it came to be run down the following day! Yes, I did explain that they must never, ever, transmit as it was illegal! Happy days.

[@nelsonjoaquim5918]

Hi Paul and friends of the channel. As I said on the previous video, pretty neat restoration coming up with these two....by the way, I was just thinking about when I was a kid growing up, wondering about on the insides of old radios and TV's while they were switched ON! 😳....how in the world did I managed to get away with that?? I never got bitten by lady electricity.....but I was close a LOT of times!.... without even knowing it. Knowledge is power no doubt....while ignorance will probably get you in a world of trouble.... anyways.... thanks again Paul for all these master classes and, at least for me, very very entertaining videos. Cheers

[@bjornstromberg7975]

Very nice. And you're right: Common sence..... (and pure water) is hard to find these days... Take care.

[@garyjohnson4608]

Really looking forward to the restorations !!

[@smallenginedude71]

Very interesting video!! The older tube equipment always surprises me how reliable it is, even with very old capacitors. Great video as always Paul, hope your doing well!

[@jefferyrightmire9520]

I really like the work you do. I have a friend named Ross , who lives near St.Catherines Ont. who is an old radio guy. I really love the older big low frequency radios like the sets used in the movie "Hatari" with John Wayne, were EF Johnson "White face" and Motorola base units. @ 8-12 meters

[@edwinpd0sot503]

it would be very interesting to see a short clip using both "apparatus" making a QSO, thanks for all the great lessons and insights! 73 ..

[@spikeypineapple552]

Good evening sir. I'm very sorry to hear about the loss in your family. My thoughts are with you at this difficult time.

[@MrCarlsonsLab]

Much appreciated Samuel.

[@kenjohan]

Many words are spilled on nothing. Brevity is a virtue!

[@tseckwr3783]

thanks for your great videos.

[@MrCarlsonsLab]

My pleasure!

[@e.scottdaugherty8291]

To quote Cars and Cameras: "With the amount of jankification it's astonishing it works".

[@wireworks616]

Great radio. Looking forward to the restore

[@rustyrobinson8027]

Thanks again I appreciate the upload

[@paulbione5267]

Really looking forward to the resto Paul. Nice one.👍👍

[@Derrick6162]

After seeing the butchery, I was kinda looking forward to seeing a little smoke leakage. Can't wait for the rebuild. Thanks

[@nathkrupa3463]

Hi sir your videos always good you shared many types of radio's knowledge and radio's repairing information you deeply part by part you showed this is nice information sir thank you so much.

[@frankowalker4662]

Escelent. Looking forward to the restoration videos.

[@ariedekker7350]

Hello OM, So, also saw this episode. Really enjoyed watching it. Seen on 9/7/22 at 10:16 PM PE1KRX

[@terrym1065]

Thanks Mr C. 👍👍 Your knowledge of theory and application in electronics is astonishing, these videos prove beyond a shadow of doubt you're a master of design and principal. The relative ease at which you flow through diagnosis and conclusion is nothing less than amazing. The restoration of this transceiver will be awesome and actually working it fantastic. See you next time. 73's KC5NEX Enjoy!

[@MrCarlsonsLab]

Thanks for your kind comment Terry!

[@tomharris1457]

Oh fun! Can't wait for resto.

[@ShainAndrews]

4:50 Wave washer. Another option is a belleville washer, although it may provide more resistance than needed for that application.

[@scottlarson1548]

When I was a teenager in the 70s, I "fixed" a loose knob on some Radio Shack product by wrapping many inches of electrical tape around the shaft so it would squish against the chassis. I guess this method is a better solution.

[@jeffclark2725]

I was waiting till the en to say i thought the transmitter looked familure,i can see needing to keep the chassis extra clean,with 400 plus volts floating around dirt and dust probobly become a conductor,just like dirt on a 12 volt battery, Great video

[@nyckhampson792]

Im nervous watching ...love this though Mr Carlson

[@jimparr01Utube]

Ah! Dodgy crystal. Been there... Back in the mid 1960's (New Zealand) my Uncle owned a Radio/TV repair and service business in a small rural town. I would often fly up and spend Xmas holidays there. As a young teenager pottering in his workshop, I learned enormous amounts of basic electronics and I was even allowed to do some repairs occasionally. I vividly recall learning how to use paste, stone and water and glass plates to manually re-tune Quartz crystals for HF vehicle radio transceivers. The techniques were similar to old-school grinding of glass lenses. The rocks were usually the 20 odd millimeter square variety and fitted to a square, two-peg carrier. It was amazing to me at the time, how stable resonance could be accomplished so simply with a little wafer of quartz. I expect you will find the quartz carriage fingers inside the crystal assembly just need a good clean and away you go... Looking forward to watching the next installment on refurbishment of this butchered transmitter. 73's -- (Was a ham for many years but no longer.)

[@MrCarlsonsLab]

Thanks for sharing your story Jim.

[@glennbillings4621]

I saw that it was marked Wells- Gray on the front, that's in the state of Maine. National Weather Service here is in Gray

[@p1nesap]

Good eye, Maine here too.

[@abhishekmallik1194]

It's very relaxing to watch a vintage radio/equipment come to life. 👍👍 Please post some videos on modern HDMI audio receivers also. They break down frequently and are very difficult and expensive to repair.

[@mimsnshine]

Epic!! thank you for post!!💖💖💖💖💖

[@MrCarlsonsLab]

My pleasure!!

[@craigedgar2828]

Love your explanations

[@MrCarlsonsLab]

Thank you!

[@poolmotorrepairguyFL]

Jay the Florida pool pump motor repair guy When Service Calls Longwood approved ! that was good info 2 know 👨‍🔧Mr Carlson's Lab

[@jonka1]

i've had a lot of interstage transformers with open windings. I've rewound a lot of them and I found when unwinding the coils that the wire can be broken in dozens of places. With absolutely no evidence of abuse I put this down to either thermal stress or impurities in the copper. In some cases there will be evidence of many impending fractures showing up as discolouration on the wire.

[@hugh007]

When I can imagine I smell old electronic gear it's a great video. Thanks. K4XBC

[@sergiogomezxe1-ygs876]

Como siempre excelente, muy emocionado con este transmisor. Saludos desde México XE1YGS. 73

[@bodacious2276]

I bet your lab is cozy on a cold winter night.

[@rsmrsm2000]

amazing

[@GeorgeWMays]

"Knock the Rock." Was that the version be Bill Haley & His Comets? Sorry. Couldn't resist.

[@durinf]

Hey, sometimes spraying the trimmers/adjustment screws with tuner cleaner or a bit stronger can remove some of the noise during adjustments. Removing old oxidation helps. edit: Really enjoying your vids.

[@roscocsa]

There’s something about that thumbnail. The angle, the subject something that distinctly screams fallout.

[@sparky5860]

Nice

[@Carlosaguilar-pe8fx]

You the best!!!!

[@leonardpeters3266]

That terrified me a little bit when you switched into transmit with full line. I was sweating watching that and it wasn't even on my bench.

[@radio-ged4626]

Great to see the transmitter section still works, even in that state of repair. It will be interesting to see if the transformer has failed and what may have caused it. Maybe David Tipton could rewind the transformer for you 😉😁

[@MrCarlsonsLab]

He does great work!

[@ericmoeller3634]

by the sound of that grunt you made when u moved that radio it must way a ton

[@itsonlyme9938]

Many years ago, I built a 10 watt am transmitter and with the HT off I measured the grid current drive from the output of the buffer stage and tweaked it for beast setting using a meter in the grid of the pa

[@davemould4638]

I wonder if that mysterious ON/OFF toggle switch turns the mic input on & off? I note that you didn't try flipping it while feeding the mic input to see whether that made any difference.

[@p1nesap]

This will be so cool when you make first contact!

[@mikefinn2101]

Great learning video love seeing as you do for the same time. The master Paul in electronics really enjoy this video the most. 73s wb7qxu

[@smoothsailing6351]

Many thanks for the very interesting videos you produce. Are you continuing the 'Grand Radio Receiver Restoration' project? The prospect of such in depth work on those classic receivers was very appealling.

[@denisdespins1127]

Awesome Mr C... Denis KC6TRW

[@zoran9a3hpdiy]

This work with old military crystals, I deal with this and frequency below HAM 80 meter band is very was popular in ww2nd and after for comercial things. To replace rectifire tube with silicon diode I was also doit many time, 35 year before people still used old vaccum tube radio receivers but vaccum tube was tricky to found. This kind crystal I try to tune up in the HAM radio band but you cannot to phone subband. Only just a little above 3.5Mhz I try it. God job in restoretion

[@mackfisher4487]

I knew a silent key who had a Lodge on Red Lake in Ontario who had a Canadian forest Motorola Handy talkie basically a BC-611 made in the 50s It too operated around 30MC.

[@jameswilson197]

. I appreciate your Elmering. I spent 20 years in BC working in a communications shop and maintaining many repeater sites as well as helping loggers get licenes. KE7HTU

[@morpher44]

Idea: You might try to power the thing from a modern battery system like Bibene portable power station. It can be a demonstration of how power thirsty the radio is relative to modern radios.

[@JeffreyGroves]

a second down-camera on the transmitter that is always running might be good for watching for flames or smoke ;-)

[@zappatx]

How long does it take to make one of these videos of yours - recording and editing time? Just curious as they are so well done.

[@GeorgeZ213]

I am guessing maybe 2 days recording, re-recording what's needed, post processing, etc. Then upload

[@mortwin6054]

nice video as all ways the transmitter must have sum power in it mind you if was a forestry radio i bet it had to cover a big zone just thinking sum were like Yellowstone how much land that must cover trying to get to every corner in sum were like that must need a very power full transmitter like that any way love your work :)

[@nr3rful]

You are so interesting

[@davedoggy]

That mono input jack [ Modulation ] Might be the type that has a bar that shorts the input signal terminal to ground when the male jack is unplugged from the female jack on the rig. I was looking hard and thought i could see the shorting bar on the jack.

[@Synthematix]

Sorry but theres just no way your head is big enough to fit that brain inside, you and shango066 are my 2 favourite youtubers, yours because you explain everything elegantly and repair things properly, and shango's because he gets things from the desert and gets them working with bits of wire and a fuse.

[@johnny5163]

They are my 2 favorite as well for the same reason. Awesome right.

[@Synthematix]

@@johnny5163 Brill mate, followed both channels from the beginning, two very talented men.

[@flatmoon6359]

"It should be a lot of fun",yes that just about covers it.

[@vk4uh96]

Great video again. Could the Mic input socket be “grounding out” when there is no plug inserted?

[@JimmytheCow2000]

Second request for 4K content. I know it takes longer, uses more space. But we love the visual ASMR part of your videos as well.. Thank you and keep teaching us!

[@lehninger2691]

Great video and great channel. just wish that there was more ambient sound on your mic it feels like you are recording on the video.

[@greylocke100]

Have you done any work on the old GONSET transceivers? In particular the Civil Defense ones in the 2m band?

[@stevencraig]

Just before 14:00 when you shorted out your limiter bulbs to get full line voltage, you said it was still a current limited variac supply. Do you have current limiting other than the bulbs? Wondering if you mean fusing or if you've added something to the supply since making the video on it.

[@gordonwelcher9598]

Thats a real nice radio. Looks like it's made in Canada, eh. Too bad its got no AM broadcast band. Maybe you would pick up some very excellent tunes by Anne Murray.

[@bradwilmot5066]

Looks like I'm going to have to put the FT897 in AM mode... (haven't ever tried AM with a modern transceiver...)

[@bradwilmot5066]

The first and last AM I ever played with was some homemade somethingorother that a friend of mine had about 20 years ago when I lived in Canton... It made about 10 watts or so, and we made some 75 meter contacts about 500 miles. Not too shabby. 73 DE W0VHA

[@kyleschmidt2598]

I wonder if the mystery switch allows the rx to be on during tx for alignment or allows the modulator to be disabled and instead key the transmitter with a short on the mic jack for use with a key to do cw...

[@douro20]

Does the 3439A have a JFET input?

[@American_Jeeper]

That it worked as well as it did is proof positive that they just don't make 'em like they used to. The factory radio in our Monaco motorhome didn't even last 15 years...

[@SA0BUX]

Had been interesting if you cranked up the volume on the service monitor, I guess it has a speaker so you could hear the demodulated sound ?

[@towerman75]

Please let me know when you do the restoration. Great work. Jim WA5WRE