Restoration Warplane Radio Receiver BC-348

Let's bring one of these receivers back to life! This is Part 1 of the "Grand Receiver Restoration Series" involving a BC-348 Communications Receiver. 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
#restoration #electronics #repair

[@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

[@inerlogic]

I want to see you do a top down restoration on a heathkit IM-18 VTVM, I have 3 questionable ones i can send you, lol

[@OscillationOverdrive]

Radio 1 with possibly more options, plus it has the better transformer with choke!

[@inerlogic]

Radio 2 seems to be the most original with the front panel at least, and had more in common with radio 3 as far as spare parts... Maybe grab the power supply and choke from 1 John N1NJI

[@danielt.8573]

As a suggestion, I wish you could do a few more restorations of pocket radios and cb radios. I'm currently trying to restore a President Lincoln CB and it's a pain.

[@inerlogic]

@danielt.8573 my dad had a Lincoln after he got his Novice ham license, CB and 10m

[@alanletterman]

Good Morning! I will watch anything you post. As an engineer, I am always looking for content that helps me learn about technology past and present. I appreciate all that you do for the community. I have a bunch of radios I hope to restore one day and this video library helps me learn what to do and not do. I enjoy the grand receiver restoration series. The design of these radios are amazing!

[@sciencefollower]

Radio No. 2 is better for restoration please.

[@ronarant2897]

I agree! I try to watch all of your videos too. My vote is Radio #2, unless the review of the schematics brings something unexpected to light. Ron, N4PHP

[@rosariodagosto6484]

GOOD WAY TO LEARN ELECTRONICS IF YOU DONT UNDERSTAND .😊

[@marklovatt2083]

Radio #2 seems to be the better for restoration.

[@stephendavis4241]

I also vote for #2 receiver for restoration. Although, #1 may have the better amplification stages. I have several SW receivers that I want to restore (ebay auctions), so every detailed video you make about receivers and amplifiers have my interest. I have noticed your channel has not popped up as often as you release videos (even though I subscribe to all videos), so I blame this on youtube playing with the algorithms.

[@tonygrimwood3162]

Yes PLEASE continue with the receiver restorations. Your in-depth explanation of the technologies and engineering techniques used in these wonderful old receivers is incredibly interesting and useful. Likewise, the ‘dirty fingers’ work and tips are priceless! I’ve watched every one so far. 👍

[@edwardsiclari9235]

As a ham radio operator I am fascinated by your restoration series so I vote restore, restore, restore. I'm always learning something new and refreshing what I've forgotten. Thank you so much Paul.

[@derekloudon8731]

Yes, please continue with the restoration series. It’s great to see someone who not only knows exactly what he is doing but genuinely cares about the subject and how it is presented. I agree that radio 2 would be the best option for restoration.

[@peterking1134]

Yes to the receiver restoration!!

[@user-lc7vy4ub8v]

YES!! YES!! YES!! to the grand receiver restoration series. I look forward especially to the Racal and Collins receivers having used both. I go along with your choices for BC-348. Superb series and superb channel .Many thanks for taking the time to do these restorations.

[@joernone]

Mr. C. Whatever you chose to repair will always have my full attention...and many others as well, based on the almost 9000 views this video has garnered in 8 hours. I greatly enjoy and continue to learn from the projects you're now presenting. Drive on, my friend. Regards, John

[@AntiqueRadioandTV]

Great to hear from you John! How's the T-Bird restoration going? Sorry, but I lost you new URL that you have the car videos on. Still listening to the jukebox? Take care, Tom

[@davidchaundy8308]

I've been watching your videos for three or four years now. I've watched several other KZbin creators videos too - as I try to learn Valve (Vacuum tube) electronics. Your vast knowledge of electronics is tremendously impressive, but I have to say the main reason I like watching your content is your perfectionist approach to everything you do. I so admire your immaculately kept workshop. It's obvious a great deal of care goes into your beautifully filmed content, even the thumbnail photographs used to advertise your videos are of outstanding quality and show the perfectionist side of your personality. In a world where its hard to find expert help and advice, I have found it a delight to listen to someone who really knows his subject and always strives to get things exactly right. I've learned a vast deal in a short time watching your content. Thank you so much for sharing your formidable knowledge so generously. I often think how informative it would be to sit next to you and watch you work, your Video's are the next best thing. I've enjoyed your Grand receiver restorations and loved the Stomberg Carlson restorations. Anyone working on a similar equipment, and gets to see your videos can't fail to find them interesting and highly educational. Thanks again for the outstanding content.

[@solidlogictecnology]

Truly , he is!!!!!!!!

[@rs1971camaro]

Yes to the restoration! My favorite parts of the restoration videos are the troubleshooting and repair segments.

[@Turtle_1976]

I don’t even do anything with electronic restoration, but I watch your videos, because they are enjoyable and you have a soothing voice. So for me, yes, I will watch whatever you post.

[@camellset]

Paul, please continue the Grand Receiver series... The receivers you have chosen are the absolute best. I have learned a tremendous amount of information from your work. Thank you so much for your willingness to give back to electronics/receiver community.

[@lerkzor]

I am VERY interested in continuing the restoration series. Thank you for the work you do, and for sharing it with us.

[@jaut-76]

Made my Saturday so much better. I love all WW2 receivers and kit. I might have to walk away from my 19 set mk3 to throughly enjoy this.

[@michaelblair5566]

I love restoration videos.

[@duanethompson2360]

I’m a retired electronics Technician. I went through engineering in the late sixties. I love your approach and you bring back fond memories. I’ll watch anything you do!

[@nogeek43]

Paul, i will watch anything you video that is associated with electronics. I worked on tube type communications equipment from the 70's to 2005 when hurricane Katrina put us out of business. I was a two-way radio shop owner from 1972 to 2005 and also installed, sold and repaired commercial two-way radios. In the 90's and 2000's we transitioned to solid state equipment so I am familiar with both types of electronics. Your videos are extremely interesting and your knowledge is amazing. Keep up the excellent work. I am also a ham radio licensee and love your receiver and transceiver videos.

[@ColinSBC]

Yes, please continue with the grand receiver restoration series. Combining the best aspects of each of the three radios makes the most sense. It would be nice to see both radio one and two restored if one is a special designed, so you could compare the two radios side by side.

[@Slay3rOne]

Absolutely enjoy watching vintage receivers restorations! I always wanted to get my hands on one of those boat anchors receivers, but being overseas with no such equipment here, it has always been on the back of my mind. The start of that series brought that idea back, and now I finally got my hands on a Hammarlund SP-600 JX-21 receiver a friend shipped to me by maritime freight from France all the way to Reunion Island! Looking forward to seeing the restoration of your SP-600, and would really enjoy seeing some of the mods you've mentionned in the introduction of this series, I will try to do some myself too! Hope you keep the "Grand Receiver Restoration Series"alive!

[@762Scott]

I have an SX-28A Hallicrafters which I think belongs in that group. Well objectively, maybe not, but I'd still like to see him restore one. All he needs is time, ha.

[@Rodewerksahed]

Yes please carry on with the grand receiver restoration series. I have a BC342 that needs restoring and know the series will be a great help

[@VECT0R777]

I am watching your videos for entertainment only. I like watching you do what you or the viewers want to see. So do whatever works for you Mr Carlson. I'll watch it.

[@davidquerry8869]

I myself is not into electronics, but I enjoy the heck out of your videos. I appreciate the efforts you put into this channel.

[@leehayhurst9052]

Yes you should continue with the radio restoration series. You are a blessing to youtube and radio enthusiasts alike.

[@Capt.Marco-Hawk-L.L.A.P]

Love to watch anything you repair, just awesome to see items live again

[@user-vx5pr9gn9r]

PLEASE continue with the restoration series. I have been looking forward to the restoration of the R-390 since you first introduced the series. The R-390 is such an outstanding receiver and from many aspects, it is truly unique with the mechanical digital frequency readout and the utilization of pto's as well as the modular design-quite a challenge to access the necessary test points to troubleshoot. Lots of challenges to work on this receiver. So much to learn.... I have one in my basement-long overdue for some TLC to get it working again. Thanks for all your work. I'm 76, with a BSEE, and Extra class ham license and I regularly learn from your videos. I understand the need to work in some quicker repairs between the major restorations that require SO much work, but there is much to learn on the really challenging projects. Thanks again, and I concur with the selection of radio 2 as the receiver on which to focus.

[@johnstamper9973]

Please continue with this series. Even if it takes another year to get through them, all these high performing comm rcvrs are well worth the wait and present a wealth of learning opportunities. Especially looking forward to the R-390A with the PTO and the mechanical marvel that makes that receiver special. Am sure you will find a recipe for mixing other learning opportunities between the Grand Receiver Restoration Series episodes.

[@vincentstevens5048]

A big YES PLEASE Mr. C.. your knowledge and skill is immeasurable and every restoration is so valuable.

[@richardpetre1825]

Appreciate all the work you do Mr Carlson, it shows in your channel and I'am still learning at 65 years, with 60 of those years tinkering with electronics old and new after my first electronics lab kit for christmas aged 5.

[@andyrecord]

One Grand Reciever every year. I am here for the long haul, so a nice mix is perfect.

[@user-go1ec9oz5n]

I vote for yes, continue the receiver restoration series. I enjoy them very much. And it definitely looks like the second of the three receivers is the candidate for full restoration, with certain pieces from the other two to make one nice one. Keep up the great videos! Thanks.

[@4X6GP]

I love this series. There really isn't much more that can be said about "all-American fives." But these radios are so much more sophisticated and interesting. I understand that they turn into long multi-part series, but I look forward to each new episode. I owned and used an SP600JX for some years and would be very interested in seeing you work on one.

[@kennellis7384]

I'm thrilled that you are going to be looking at a BC-348! My personal preference is that you look at the "grid cap tube" radio. I have a BC-348-O (made by RCA) that is in nearly untouched condition: 97% paint, no holes or mods and the original dynamotor. Cosmetically it's near perfect, but it doesn't currently work... no dynamotor action. Hoping you'll slip me the clue... Yeah, high level of interest here. I love all your videos, but this BC-348 series more by a factor of 5!!! Thank you for all you've taught me over the past few years.

[@timflynn3218]

I like the restorations because they teach me what to look for, what to watch out for, and what to avoid sometimes. Yes to the restoration of radio 2 - pending schematic review. I also enjoy the new items you design and work on though. Both help me learn about the other. The modern components are smaller, but the original theory is in the older items. If I can understand the tube equipment, then the digital becomes much easier for me to work with. I do appreciate all that you do and the amount of work it takes to video these repairs, restorations, and the new designs. Honestly, I am surprised by how much I have learned watching your videos. Thank you!

[@alan_wood]

I very much enjoy the restoration series and would like to see it continue, please. I also enjoy more modern stuff and it's nice to have some variety after a long restoration.

[@patrickguice]

Yes Paul by all means please continue the Grand Receiver restoration series. I’m in the electronics camp of everything that you do is great. There’s nothing wrong with anything that you do.

[@aerocom59]

Good evening Mr. Carlson! First of all I would like to say your video restoration page on these types of vintage HF radio gear is fantastic! I was beginning to wonder what happened to this restoration series!?!? As many others who UNDERSTAND electronic repair,troubleshooting have said your knowledge of electronics and specifically vacuum tube era repair work is second to None!! Ive been watching your videos since you first decided to undertake a series on You Tube and patreon on restoring and repair this type of gear and all other types as well!! Do Not Stop this series of work on theses types of HF Comm. gear!!! Your approach to troubleshooting is excellent in its detail of what you are trying show and certain things that can be done to find elusive problems!! If some viewers are looking for repair of modern SMD transceivers they need to take a look more closely at your Bench and notice the VINTAGE test gear and other that has been restored and calibrated by yourself to use for other types of radio gear and other restoration videos!! Yes,Mr. Carlson HAS Modern solid state type test gear for repair and troubleshooting ,alignment of course ,but I don't think some viewers get the point of this series!?!?!? Mr. Carlson is trying to show other technicians like myself how to tackle these types of radio gear correctly and to show how well these types of radio communication gear CAN BE and were when they first came out many years BEFORE the era of solid state gear had even been designed yet!! I have restored a few B.A. in my time to different degrees of quality and you have no idea of what is involved like what Mr. C is doing here on this video series!!! I will get off the Soap Box now and say Please keep up the series and looking forward to see how you approach the rotating turret of tuning coils in the SP-600 receiver and other parts of that rig!!

[@voltagefreak6350]

Restore the cleanest one first, then use parts from the other as needed to restore the one with the grid cap tubes so as to make performance comparison between the two different models. You do such a good job at explaining the process. Very anxious to view these upcoming videos. Thank you Mr C..... love all your videos.

[@paulsullivan6392]

YES sir to the receiver restoration series. It is fascinating AND educational. Wise choice to select the #2 BC348 for restoration, As others have noted I too thoroughly enjoy whatever you post but the receiver restorations are my favorite.

[@jrodrigo1984]

I'm amazed by the hard work that you put into this series and I think the result is over the top.

[@TheDoctorhuw]

YES please, the grand receiver restoration series is something I am enjoying very much.

[@ThermosPilot]

Yes, please do continue the receiver restoration series! I'd love to restore an old military or BC radio someday, and your videos are a great motivation and technical resource.

[@thJune]

Thanks Mr. Carlson! I inherited a bc348 from ham grandfather who was a ww2 vet. Subscribed a long time ago with your last bc348 video cause there were so many good tips in that!!! I still got a long way to go and appreciate you being such a tremendous teacher!! Much appreciation from the states!

[@Ram1947S]

My choice is no. 2. Thanks.

[@mikethornton8043]

Please stay with the grand receiver restoration series. Much appreciated.

[@huwshepheard3075]

Dear Paul, very much support the receiver restoration project. I read electronic engineering at university for 2 years, then became a lawyer! I’m now getting back into electronics and really enjoy learning from you. Agree that no.2 is the best candidate for restoration of the BC-348Q.

[@paolonoal9950]

Whatever you'll decides, think that these in-deep restoration videos you make are unique and priceless, an explanation of what technology was in the past, and a true heritage for who will come in the future. If I was you, either you make a video out of it or not, I'll do a restoration of both the older and the newest of these receiver, to further compare them directly side by side and see what progresses they made in that particular field at the time. Sorry for my bad English, I'm from Italy. Cheers.

[@alandozier7582]

Yes, please continue the grand radio resotration series. I am setting up an electronics shack for old shortwave receivers, radios, and equipment repair and restoration as a hobby. I follow these restoration videos very closely to gain insights on basically everything. I think I would go with the receiver that should have the best performance based on the schematics.

[@patrobinet]

I like to see any old equipment, especially old communications and test equipment. Receiver one. I have been watching your channel for years.

[@tallperson9422]

I'll add my voice to the desire for the complete series. I can only put batteries in a flashlight but I find this site better than any tv show. Great stuff!

[@user-sj2dc1cc8f]

I always watch your restorations with great interest and look out for the next one. I would like to see the second receiver restored as it looks the best of the bunch. Thanks for your excellent videos.

[@EriksElectronicsWorkbench]

Please continue the Grand Receiver Restoration Series. I can't image anyone else ever successfully doing such a series. Even if the views drop a bit on some of the dry topics or very technical parts (don't leave that stuff out) there are many of us viewers that watched each Grand Receiver Restoration video from start to finish. I, and certainly most other viewers, greatly appreciate the time you put in to producing the videos and the knowledge and skills you teach. Radio #2 would be my pick from what I just saw but curious to see the schematics, in case radio #1 has a very compelling reason to go with it.

[@larryrivers1471]

I truly love the old tube restorations. I remember having to warm the T. V. up. Just fun to see the old yet sturdy technology.

[@billygamer3941]

I am a DXer. I enjoy observing the restoration process: it gets me away from the frantic search for new countries; the videos show me another electronics hobby; and, the work makes me think about circuitry. I will continue to watch but must admit that I scroll forward when the action seems slow to me. I would go with the _middle_ of the three radios as the one to be restored. It has a few benefits: its front panel cosmetically looks better than do the others; it has all of the shields in place including one covering the main tuning cap’s trimmers (as does the left one but not the right one); it has more modern tubes and all metal ones in the tuning stages. I appreciate what you do and realize what is required to make a good video blog.

[@NigelDixon1952]

Hi, Paul, thank you so much for all the great work you're doing. I love your restorations, and really hope you carry on with them. But I also appreciate that some others would rather move on. So for me, keep on restoring, but if it's knocking down your views, go the other way. You have a fantastic channel, your hard work is truly appreciated.

[@stephenchoiniere2530]

Mr. Carlson, I say keep going with the restorations. I am finally learning electronics by self teaching. Your videos contain so much information presented in a way that makes it more understandable for me. Between KZbin and Patreon I watch all the time. Thanks again, Steve N1SMC from Massachusetts, USA😊

[@wlsetzer]

Yes, please continue. Brings back memories when I was working the the receiver section working on the R390A in 1958 in the 678th acw.

[@Swamp-Fox]

A resounding YES to the receiver restorations! I enjoy seeing the entire process. I vote for radio 2.

[@Movieman1965]

This series is great! Your detailed way of explaining why things are done or why they could be done better is very interesting. Your troubleshooting techniques are great to learn from. Thanks for sharing your knowledge and expertise. 👍

[@richardpucci3492]

I also vote for #2, and I enjoy the series. You are helping to keep some of the older irons from going to the landfill. Although I would like more videos, I will wait for the videos from this series. I have picked up a lot of tips and techniques from you. Thanks for your efforts.

[@willardway3037]

Yes, please continue with the grand restoration projects! for everyone you do I learn a bit more about Old radios and one more step in my dream of building my own transmitter radio station.

[@hestheMaster]

Triage the best receiver and use the other two as parts chassis . This is a no-brainer Mr. Carlson. We love what you do.

[@mickmccoy5175]

I do enjoy your receiver repair videos. i'm sure that many of us find restoring these complicated receivers to be a challenge, and without expert guidance, sometimes, I just give up.

[@christopherrobitaille9774]

Nice Mr Carlson, very interested in this restoration as I've had my BC-348Q since the mid 70's. Has worked perfectly for me for the past 50 years, a veritable tank. BC standing for Bomber Communications it was the standard radio in the B-17 flying fortress. Got mine from a high school teacher who was an old Navy radioman, he built the power supply and had to rewire all the tube filaments, other than that, everything is completely original.

[@chris_share]

Hi All! Wow! Can't believe that you're going to restore one of these! My late-father was in the Australian Air Force during WW2 as a wireless technician. After the war he maintained his interest in electronics and was always building and repairing things, including several guitar amps for me. One of these BC-348s sat on his workbench for as long as I can remember. After he passed away in 2016 I had the task of clearing out his workshop. I knew the BC-348 was out of a WW2 plane but other than that didn't know anything about it, and I didn't want it to go to e-waste. So I did some online research and managed to figure out what it was. I also found that there was a Liberator being restored not too far from where I live so I donated it to them. Cheers!

[@johnproctor464]

The restorations are fascinating but so are the smaller projects fixing things and showing how to test and align. You put so much life span into this entire effort you should do projects that you enjoy as well in my opinion.

[@Leonfox001]

Keep the series going! Love to see your thorough processes!

[@bradnelson3595]

Paul, I think you've got at least two groups of viewers here. For one group, no amount of detail is too much. And I admit, the Restoration Series is an interesting and worthy project. I'm in the second group of viewers. One good fellow here wrote, "I myself is not into electronics, but I enjoy the heck out of your videos." That speaks for me. I love seeing these old dinosaurs brought back to life and given purpose again. I like learning how you do what you do but am unlikely to walk in your shoes. But its fascinating all the same. It sounds as if everyone wants the Restoration Series. It almost sounds like it would be electronically incorrect to say otherwise. But I do think variety is the spice of life. I think you already know that when you get into too much detail (or if a project goes on for too long), people lose interest. I would simply edit the series down a bit and (as you've already done) intersperse some lighter projects in between the series. If it's not an unworkable idea, what if you split your videos 50/50. Continue the restoration project but in the last half of the video could be a self-contained presentation of some other project. Just an idea.

[@cyrilhudak4568]

I agree with Brad, I'm in the second group also. I also agree with continuing the Restoration Series.

[@charlespolk5221]

I find watching and listening to your restorations relaxing and entertaining. I vote to continue the grand receiver restoration.

[@terry5089]

My vote is for #2, the BC-348Q. I loved the smell of the glowing tubes in my BC-348Q as a kid. I could almost smell the old radio aroma when you took the cases off the radios. It really took me back.

[@officially-ROB]

I love these videos would like to see some modern equipment as well. I'm happy with anything you do absolutely brilliant content

[@Bill_N_ATX]

To be honest, we want to see them all! I totally get mixing the projects up. That is doing one long term project spread over a few months interspersed with short projects along the way. Since I’m in the media business, I also understand how much time it takes to film, edit, dub voice overs, and finalize the videos. I enjoy the major project series but understand that some viewers have the attention span of a goldfish. At the end of the day, you have to keep an audience entertained. Not everyone will put up with a Project Binky. But I’m still watching that, and I’ll continue to watch your channel, no matter how in depth you get. And yes, I’m one of the thousands of Patrons. So my vote is to do all of the old radios, but feel free to take a couple years to do it.

[@cjay2]

Love it. And I totally agree. The production values are difficult to achieve in electronic restoration, and highly appreciated.

[@sascandave]

I agree break it up with some little fun stuff . Hot rod something

[@MartinHoughtonRN]

Please continue with this series. These radios are a tribute to those who used them to help us keep our freedom and as such is a memorial to them. A restoration to your standards takes a long time but it is The Standard to aspire to. I have a 348L here brought a rally this year to go with my R1155, Racal 17, No 19 & 62 sets etc. An AR88 is on my list. Thanks for sharing your skills and knowledge. I would restore No2 but also I am intrigued by No1. I would use No 3 for spares. My 348 has been converted to mains but I have the dynamoter 34-d to go with it. Keep on restoring!

[@davidgramm5027]

It doesn’t matter what you repair, it’s gold to me. I have relearned so much that i forgot In electronics school in the Air Force back in 1970. The restoration of the military radio would most welcome. I vote for Number 2 with a possible swap of p/s from number 1

[@ellise.2574]

Thank you for all your hard work making these videos. I became a Patreon supporter because I am very interested to see how the Grand Receiver Restoration comes out, so please continue. I vote for #1 because I have two BC-348-R receivers with the grid cap tubes.These were the early units. The later units were engineered for cost savings, but were considered by the military to be just as good. I enjoy the restoration videos but find that they are a little long winded. I suggest that you concentrate on the unique aspects of the receiver regarding repair and alignment. Thanks.

[@kahlid-ataya]

I'm still waiting for a vacuum tube TV restoration. and please keep on the grand reviver restoration

[@Slay3rOne]

Would also love to see that one day!

[@galenelric1218]

Keep doing the antique receivers. I do electronics for a living and enjoy see how it was done in the past.

[@00Skyfox]

I for one am thoroughly interested in watching the full restorations. Even though I’m not into vacuum tube electronics or radios, it’s still fascinating to watch and learn about the old electronics. I watch all of your videos whatever the project is.

[@sergiogomezxe1-ygs876]

Estimado Mr Carlson, antes que nada, le mando un cordial saludo y mi mas sincera admiración, soy una persona muy interesada en la electrónica y soy autodidacta en el tema, y sus enseñanzas son un cofre de oro para este admirador, cada uno de sus video encuentro algo nuevo y muy interesante de aprender, usted es un excelente profesor y una persona super profesional y no quiero sonar sobre adulador, pero realmente le admiro toneladas. Si quiero ver la restauración completa de todos los equipo, pero si entiendo el doble esfuerzo tanto en la parte tecnica como el producir el video, y agradezco el gran esfuerzo que hace por compartir el conocimiento con todos nosotros. Un fuerte abrazo y admiración de su alumno y admirador. Sergio Gómez desde México XE1YGS 73

[@MrDoneboy]

I vote YES, for you to continue the grand receiver restoration series, Paul!

[@kd5byb]

PLEASE continue the Grand Receiver Restoration series! I’ve owned many of these same receivers, but never had all of them restored at once nor a setup when I could fairly and accurately compare them, so I’m very curious! I think the views declining as the series goes on then spiking in the end is a reflection on society today - so many folks want to “skip to the end.” I will watch anything you put out - it’s great content. On which 348 to restore, I’ve restored three here - a Q, and N, and an M. (also owned an R at one point that worked great with ALL the original components.) My Q and N, and as you’ve noted, your J and Q models, use “single ended” tubes and have more classical point-to-point wiring. Number one, far right, no name tag, uses “top cap” tubes (as does my M) and terminal-strip construction (more or less). I found the single-ended ones a little easier to work on from an access point of view being point to point…but required more thinking as to where to put modern components that are so much smaller than the originals vice the top-cap versions have more of a terminal-strip (Tek-like) construction. The top-cap versions don’t require any thought, but getting to the bottom terminal closest to the chassis is rough! On mine, I ended up cutting out the original wax-papers and installing the poly cap leads over top of the original terminals WITHOUT desoldering anything - couldn’t figure out a better way to do it! Not super proud of that, but it worked and kept the set working and out of the landfill. I can’t remember 100%, but pretty sure most of the electro-mechanical components (especially the RF/IF box lids and bottoms) don’t interchange between the single-ended and top-cap versions. Pragmatically, since you’ve got two of the single-ended versions, one can be a parts donor for the other, while the top-cap version you’d need another set for parts. MY VOTE would be Number One, the one without the tag and the top-cap construction, as I’d LOVE to see how someone with way more experience than I addresses that situation. But, like I said, I’ll watch anything / everything you put out, so really doesn’t matter to me!

[@jimgiordano8218]

Most definitely YES to continue with the restoration series. I would like to see the last 3 restored. I would choose to restore the middle one, number 2.

[@albertocarballomontenegro9686]

A great thing that you resume the grand restoration series. Please, Paul, don't give up showing us your skills and knowledge von electronics. I follow you from Vigo, Spain, and I have been a ham radio operator in my youthness. Now, retired. It's a pity that we had not a KZbin channel like yours in our time of ham radio back in the 70's. My callsign was EA1CDF, and got a bunch of experiences on DXpeditions, US Awards luke IOTA, and others. So, now that we have this wonderdul way of communicate, please go on restoring those beautiful pieces of radios. I appreciate your efforts in the channel that came from your wish to share your knowledge with all of us. Go ahead, Paul. TNX FER QSO

[@LifeBloodMarketing]

Heck yes. The time to finished video ratio is no joke. One thing I've noticed, you really breakdown concepts better in the longer form videos, perhaps as a break for yourself without even knowing it. Whatever you choose to do. Thank you for sharing.

[@bruceminnier2936]

I am here to learn. While I may never work on tube gear, the principles are still the same. ANY content that teaches me something is useful. I get lost often because I lack the fundamentals. What I'm saying is that all your content is valuable! I might not understand it now, but I will in the future. I will watch everything and anything to choose to share with us. Personally, I'd like to see more fundamentals type things, but I'm thrilled I get to look over your shoulder as it were. Thank you for the opportunity to do that.

[@donl1846]

The grand receiver restoration series rocks, keep them coming Professor Carlsen.

[@user-uq2rr4xt9g]

I have had a BC-348 for about 40+ years and it still works great.

[@petermitchell725]

Please continue with the restoration videos. It's great seeing these old receivers come back to life. Radio 2 Please.

[@maxedoutmegablith6473]

I enjoy restoring videos because of several reasons. One it is a means of learning not only how to restore but troubleshooting. Last radio you showed things I'd never heard of or thought of, due a noise that was showing. I could not even hear the noise yet you did and showed how to repair it. So hey it is wonderful to see things of nature. As to which 348 I would enjoy seeing one of them repaired and brought back to life. Back in the 90's I bought one at a ham fest for $20 bucks, it was totally restored but I had no clues as to how it worked and at the time had no means to get information. Nobody in the area I lived had any idea of how it worked. I traded it foolishly and regretted it since the day and wish I had known what I do now. In fact I would love to own another one...So yea Please restore!

[@josephrogers5337]

I am 81 and remember reading the arrl handbook to my Brother in 1950's so he learned electronics and was his reader at the Cincinnati Office of the FCC. He (blind) got his first license in 1957. I was slower and it was until 1977 (tech) and 1979 (advanced) In 1960 I went of a navy electronics basic school and in 1967 to advanced. I enjoy seeing all your restorations. I would pick the one that was the cleanest of the chassis's. I would love to see comparisons to the restored receiver's to modern equivalents. I remember my Grandmother's pushbutton am receiver by her bedside. don't disturb her when Gene Autry show as on!!! I later listened to OTR on the same radio in the Late 50's. You should start a museum of 30's and 40's electronics so it will live on past our mortal lives. As a Ham I worry about where my ham shack goes when my time comes. Only have a grand-daugters Husband who is only a tech. keep up the good work.

[@billholmes4702]

10/31/2023/2145Hrs- Hello Paul, an extremely interesting show. I have tuned in for several years off & on , WOW you certainly know your stuff. I've been a HAM since 1953 without any tech training, just muddling my way along. You're a breath of fresh air ! Current projects lined up as follows : BC-342-N ; HRO-60 (my favorite) ; RA-6790GM; GPR-90RXD ; NC-300 ; Kenwood TS-520SE and the 1954 Johnson 1 KW Desk ; etc. Looking forward to many more series like the "Grand Rcvr Series ". 73 Bill K6DUY/K7DUY now in NV.

[@FosterFarmsOk]

i dont understand most of what you do when restoring anything but I enjoy watching anyways. My favorites are the shortwave radios you repair.

[@tomoetlinger7789]

Yes please! I love the Grand Receiver Restoration Series so far and I would love to see it continued. I vote for the middle BC-348.

[@williambarden6591]

As an older ham, I love the restoration of some of the old receivers. However, I understand your time is valuable and you want to be efficient. I guess I'm saying that whatever you want to do, I'm happy with 🙂 These videos are outstanding.

[@McTroyd]

Channel Feedback: This viewer has watched nearly everything you've published, including everything on KZbin so far. Economic hardship forced me off of Patreon a couple months' back (American health care sucks 🙄), but I've seen at least the first hundred and fifteen videos on there as well. After 2 decades trying to get into electronics, your videos were the first to sufficiently demystify analog circuits, that I'm now able to practically troubleshoot and repair things. I've even taken on my own radio restoration project (though it's also on hold for the same economic reasons). Whatever knowledge you'd care to impart, in whatever order you care to present it, I'm happy to watch it. _Grand Receiver Restoration Series_ Feedback: I like the way you're currently doing it. It would be awesome to see the differences in these receivers, and I'm well aware this means massive work on your part. Interjecting the series with random fix-it videos, even just fixing things that broke around your shop (like that Keurig), works well as a balance. I would like to see you address a tube-based FM radio, and perhaps a television, at some point. Bench BC-348s Feedback: In the interest of helping the _Grand Receiver Restoration Series_ move along, I'd agree Radio 2 is probably your best bet overall. Radio 1 is definitely going to be your parts unit. My opinion _might_ change if you find out something special about Radio 3 -- it definitely looks like it was someone's labor of love -- but we absolutely need to consider the usage of your time, and the (sometimes fickle) KZbin viewership. So, Radio 2 would give you the best teaching opportunity with the least time investment. I'd count that a win-win. Thanks, Mr. C! 👍

[@albertjones1386]

Yes continue with the series. I do tend to watched all of your post but I most enjoy older radios. Also after I got my tech ham license in the early 1970s, somehow I ended up getting a BC-348 or something like it. I was glad it was operational and worked well.

[@StuartM0TTQAmateurRadio]

I have been enjoying the grand restoration series and you still have some absolute classic radios to work on. I have been following it closely so far and appreciate the detail.

[@johnk5273]

As an old time ham operator (since 1963) I appreciate the mechanical / electronic artistry that goes into older equipment. The mechanical linkages and placement of switches / compo nents was much more difficult then as compared to today's SMT or small DIP package ICs. Your #1 radio was probably Pre-WWII design (1940 - 41) with older tube designs - however the capacitors are more likely to be oil filled and/or mica types and are more reliable. As the electronics art progressed they made smaller tighter tolerance components but the parts became less reliable over the long term. Nobody thought that in 1941 that any of these radios would still be around and operating over 80 years later. My vote would be for the #2 radio also with #1 the first choice for any parts. Keep the #3 radio for a future project. By the way: I cosmetically restored a BC348Q for the Riverside Air Force museum for display purposes. Included in the donation was a labeled WWII U.S. Army Air Force down filled emergency sleeping bag. WB6IQS, John, Vista CA.

[@loretti1039]

I have a BC-348, and coincidentally, it needs some adjustments. I'm impressed that you will restore one of them because it's an opportunity to follow along and make my adjustments on my end. I'm extremely excited about these videos. A big YES to this series. Thank you very much!

[@sjohnston1487]

Thumbs up for the restoration of the Collins receiver

[@rafepittenger7484]

Yes, continue with the Grand receiver restoration. Go for it.

[@lowrybrock8272]

Yes on the grand receiver restoration series. Yes on the BC-348 number 2. I really enjoy all your videos and I’ve learned quite a bit from them. Take care and thank you.