Thanks CogitoErgoSum SC, I guess I said that in the video. The radio still runs well and usually gets a positive comment from friends, "that's unusual" being the most common 🙂
I see I came upon this video long after it was presented, I hate it when I find such great stuff and realize I could well have watched it several years ago. From what I can recall the Loctal tubes were introduced by Motorola in their car radios. The reason was because standard tubes would fall out from time to time riding in the old V8 and straight 6 engine powered cars. When they got out of tune they would vibrate a lot and shake the tubes out, causing more repairs. These new tubes were sold as the great fix for this problem. While they did fix that problem, they did also introduce other problems such as the thinness of the plugs were hard to keep from corroding to much and interrupting the service, as well as the vibration, even while locked did, from time to time open up the sockets a bit causing interruption once again.
Hi Jerry, this is a very early video. I think I read the Loctal was developed by Sylvania but not sure. As you say, the thin pins are troublesome as I found in this radio. Thanks Jerry 👍🙂
@22:40 I find very often that the two secondarys are of different dc resistance. The one side is wound on top of the other and so is of greater diameter which results in a longer winding having more dc resistance. This is often compensated for by giving the longer secondary a slightly higher voltage to even out the drop under load. I have wound many and I allow a volt or two to account for the asymetry.
Years ago at work Years ago, at work for RCA Labs , I ran a program on tube quality and did research testing on the Loctal tubes. They seem to have better transconductance over time and have a higher Q with RF signals.
No doubt a good design but the bases were low quality and the base design precluded me getting to the sockets to retension them. The radio is still working though 🙂
@@DavidTipton101 😂😂 Thanks, mate. Cheers from "The Home of the World's First Commercial Broadcasting Station - KDKA", 100 years young on November 2, and still going strong.
Great methodology, Dave, your step-by-step troubleshooting with explanations is going to help a lot of people in this hobby. Yet again, with great awareness amidst great patience you've snatched victory from the jaws of defeat. What a nice find on that transformer! All the cleaning, painting, and de-rusting came out great. What kind of paint did you use for the transformer? It looks like what I've seen called "hammertone" or "reverse hammertone". It does look very professional. Preserving the label was brilliant. Thanks again!
Thanks Jeff, I had to watch some of the video, it was pretty awful quality 😄 The paint I think is a rustproof gloss enamel, I don't think it's a hammer finish though, The colour is Monument 👍🙂
Hi David Westco products was a manufacturer in NZ which operated from I think 1934 to the mid fifties, maybe the phoenix was an attempt to resurrect the company after it failed, its not a brand I believe they typically used. If you contact the vintage clubs in NZ you should get more information.
Hi Alan. I have found out a bit more since I did the video. It was imported from Westco in NZ by a local department store in Brisbane called Overall. The store was burnt to the ground in 1906 and rebuilt, the owner named a number of items Phoenix as a tribute to the store rising from the ashes. I scanned the NZ radio sites at the time but couldn't find a similar set with similar valves 🙄🙂 Here is a link to the story: heritage.brisbane.qld.gov.au/heritage-places/764
@@DavidTipton101 thanks David I revisited this restoration because I've never seen another receiver like this one, despite the oddity of the design it seems a well made unit with good clarify .
No RJ, those are mud wasp nests, the damn things are all over the outside of the house after it rains. Here is a link to Wikipedia: en.m.wikipedia.org/wiki/Mud_dauber
Hi Mr. Tipton those valves are called Loktals. There is a knack to removing these: locate the little bump on the base, move round 180 degrees & gently rock it back & forth in that plane if you see what I mean.If the valve is even slightly loose in the metal skirt, use a screwdriver to provide gentle uplift. Philco in the USA made extensive use of these valves & the Philco's manufactured here in NZ also used them. Interestingly enough, in the When I Look Back column in EA (1990') Mr. Williams - ore was it a contributor - said this type "should never have happened"! Ohh & as to the insectoid invaders - they're definitely Aussie by birth:) Good skills sir.
Thanks 6A8G, Yeah I forgot under pressure 😉 I should have checked beforehand. I have seen people explain that removal method before but I couldn't bring myself to do it, it seems harsh on the pin contacts but I will try it next time and see how it goes. You might be right with the Aussie speaker bugs, I don't recall restorers from other countries having the same problem but nearly every radio I get has been affected 😃
It is my understanding that Loktals were invented so Philco would not have to use the Octal tubes invented by RCA. There was also a tuning eye tube developed by Zenith to avoid using the RCA developed 6U5. It turns out that Zenith violated some RCA patents and had to stop using the tube it developed. These tubes are very rare today.
Nice one! Any chance of seeing A classic Norwegian set, like a Tandberg, for The Tipton Touch? Too bad they are so expensive now. Otherwise, that may have been dispatchable to Aussie. Norway has all bud lost FM, AM..In favour of the already-outdated DAB+..I` ve missed classic radios for Years. Since I had my old EL34 Philips, built in 1948..
Hi Bjørn, thank you. I don't have a Tandberg, can't say I've seen one here. I heard FM was being phased out as well as AM in parts of Europe. Seems like a lot of waste being produced with old AM and FM sets being trashed 🤔
@@DavidTipton101 True. We had a trade-in program going for a while. Though, loads of Top tuners have now either been sold out of Norway , scrapped or exchanged for what I personally deem to be inferior quality substitutes. Too bad, as my country once produced some world-beater sets..😟
Yes... loktal tubes, a military design intended to keep the tubes securely seated in rough physical environments, and the surplus of which found its way into civilian electronics, actually became infamous for poor pin to socket connections. When the connections were functional, there might have been a little better performance compared to octals due to the shorter, more direct leads into the tubes.
It was further exacerbated by the socket design which didn't allow reworking the tension on the contacts. the radio still works well today with no sign of the pin/socket issue thankfully 👍🙂
@@DavidTipton101 Great. Yes, I saw how you clinched the socket pin contacts tighter from the top and wire brushed the tube pins with the Dremel. Decades ago, an EE lab administrator at a university I attended in the USA had a small jar of a silver paste material called Cool-Amp Conducto-Lube. I was thinking that this would be ideal for coating erratic tube socket contacts. They're still in business. It might be a USA order from Australia. www.cool-amp.com/conducto-lube By the way I saw "ap" as a marking on the end of a frequency denominated dial of an old New Zealand radio. What does that mean? Is it a local way of indicating "AM band"?
@@SeekingTheLoveThatGodMeans7648 The cool amp paste doesn't seem to be available here, there may be a equivalent I can get locally, thanks. The AP had me stumped as well but I think it means Adjustment Point, due to the large pointer that may slip during operation of the radio I think the owner can wind the tuner full clockwise and reset the pointer to AP and retighten the centre knob, sounds good anyway 😄
@@DavidTipton101 Maybe... after I mentioned it, I saw that it was on this radio too. The other one was on some other Aussie restorer's channel, or my memory has gone bonkers momentarily. A hack for slippery dial cord strings. Edit: confirmed on the bonkers. It was this same radio. That's what I get for watching radio restoration too late at night.
@@SeekingTheLoveThatGodMeans7648 I wondered when you said "other Aussie Restorers Channel" there isn't a lot around. When I aligned it I didn't click that it was the far end of the dial mark, I will realign it one day using the AP marker 🙂
"Loctals" were used in portable and car, ship, and aircraft radios to keep them in their sockets if they were under a lot of vibration stress. I have some in storage along with 1,500 others, some receiver and some transmitting tubes (valves). The whole lot will be sold when I pass to someone who will USE them for radio restoration, not for resale profit. All have been checked, the rare ones sent off for rebuilding if they didn't pass my requirements. I don't think it will be anytime soon, but at 63, you never know. I need 1T4 valves for restoration projects on several old regen receivers, so iif you have some hiding in your closet or junkbox, let me know? Thanks!
Haha, I also have a large stock of tubes but never the ones I need 😁 You should be able to get 1T4 tubes locally, I assume you are in the US or Canada, ebay or The Tube Store should reveal some.
About 26-40 in was an indecisive moment for you. “So much work for what reward. It will look good again, maybe.” As long as the wife knows you were talking to the radio and not about the new makeup she had just purchased. Sorry David but I had to laugh because this one was messing with your head.
Nice work. I found it interesting that your mud wasps' nests are identical to our dirt daubers' nests here on the other side of the planet. Wonder if they're the same species.
I disagree that it's ugly! It reminds me a bit of American ZENITH sets from the '50s. You want ugly?! Look no further than European sets from that era. Thank you for sharing. Fun and educational video.
Hi Wayne, yes I like this one, it has a very American brash look. You want ugly, have a look at my French Unic radio I did not long ago 😀 ua-cam.com/video/cqvQD_AK938/v-deo.html
The scale is marked from AP to 1500kHz that doesn't mean the tuning is limited to same. I assume you didn't actually watch the video, that was wax, presumably from the transformer but not positively identified.
With transformer windings, it's not unusual to find an inbalance in DC resistance readings relative to centre tap. Several radios in my collection are like this. It happens in PP output transformers also. Uncle Doug who restores 1950's & 1960's guitar amps says this is not unusual.
Hi 6A8G, yes that had me puzzled at first until it was pointed out to me that the windings are laid on top of each other so one winding will be longer than the other but with the same number of turns. It was a light bulb moment 😀
@@DavidTipton101 & me too! I never knew the actual reason - I just accepted that this was how it was. Thank you so much for explaining. I think this revelation deserves a wider audience!
I am a long-time subscriber to Uncle Doug, he is the man with old guitar amps...Mr. Tipton is the man with these old radios! I never really understood the reason why this is true so KUDOS to you sir (Mr. Tipton) for explaining it!
Hi Mr David, I'm quite new to your channel and have been watching your videos lately because I just bought my first vintage radio and I'm trying to restore it (and I know I can get some restoration tips here and there from a knowledgeable fellow like you--so thank you!). It's a Collier & Beale Model 515-2 and it was made here in NZ just after the war. I've replaced all the caps and would like to try and power it up. However, because this is my first restoration project, I don't have a variac and isolation transformer. What I can only do is make a simple dim bulb tester connected directly to the mains. Would that be enough? (I measured its transformer's resistances to check for shorts and it seems pretty healthy like the resistances you measured on the new transformer you got for the radio you're restoring in this video.) Also, the chassis of my radio is pretty rusty. What would be the best/cheapest way to remove it? Would you recommend using a chemical rust remover or should I just sand it down? Thanks for all and advanced Merry Christmas!
Wow, where do I start 🙂 The best and cheapest is the dim bulb, you almost don't need anything else (an isolation transformer is a good idea though) , your C&B has a transformer so you should be OK. Do not take any chances though, I always 'tap' any part of the radio with my finger tip before grasping it or use the back of your hand. Avoid touching the radio with both hands so as not to make a circuit through your body. You will need an incandescent lamp for the dim bulb about 40 to 60 watts. It should come on bright then dim them come on slightly brighter as the current starts to flow as the valves start conducting. If it doesn't go dim after a while it has a short. The bulb will protect the radio if it comes on bright so there is no screaming rush to cut power. The rust is always a problem and I treat it on a radio by radio basis. If it has a lot of rust you need to treat it with a rust converter or rust remover. How you treat it after that is up to you but it needs protection one way or another, usually with rust proof paint. Small spots can be ground off or treated and touched up again with paint. It depends on the radio, if it's a classic some folk get them re-plated or just treat the rust and clear coat it and respect that it's old and that's how it should look, if it's just a radio with no real value do what suits you best 👍😊 Remember, that thing can kill you but with common sense it is a lot of fun 🙂
I note your request for info was a year ago - how did you get on? If you are still learning and restoring radios, go to the NZ Vintage Radio Society forum here nzvrs.freeforums.net/ and join up. There's plenty of people who can help you with your projects (including me!) and lots of information available.
@@DavidTipton101 I am a retired E.E. worked in semiconductors most of my career. I used to have a small radio repair business in the 50s (I was about 14) and I enjoy seeing your repairs. I wish I had all your tools and setup. I shall watch your videos and enjoy vicariously.
Hola amigo esas tranmiciines son en hoda corta abian artas radios en español los rusos yano ... Rumania radio praga quen varias internacionales .chao ...juam
They say patience is a virtue, well if that's the case, you Dave are a very virtuous man. Loving the restoration.
Hi Dave, thank you 👍😄
Couldn't believe the quality of sound in such an old radio. Wonderful job from you gentleman DAVE.
It was good, I still use it. Thanks Hadi Faridi 🙂
"For what reward?" You know David that all of your subs are sure that the radio would be, as far as is possible, perfect inside and out.
Thanks CogitoErgoSum SC, I guess I said that in the video. The radio still runs well and usually gets a positive comment from friends, "that's unusual" being the most common 🙂
Another great effort very inspiring restoration.
That's an old video, thanks GroverCricketDaisy 👍🙂
A resurrection video. Perfect for watching on Easter. Thank you for another job well done.
Ha-ha... good point videolabguy 😄
I see I came upon this video long after it was presented, I hate it when I find such great stuff and realize I could well have watched it several years ago. From what I can recall the Loctal tubes were introduced by Motorola in their car radios. The reason was because standard tubes would fall out from time to time riding in the old V8 and straight 6 engine powered cars. When they got out of tune they would vibrate a lot and shake the tubes out, causing more repairs. These new tubes were sold as the great fix for this problem. While they did fix that problem, they did also introduce other problems such as the thinness of the plugs were hard to keep from corroding to much and interrupting the service, as well as the vibration, even while locked did, from time to time open up the sockets a bit causing interruption once again.
Hi Jerry, this is a very early video. I think I read the Loctal was developed by Sylvania but not sure. As you say, the thin pins are troublesome as I found in this radio. Thanks Jerry 👍🙂
@22:40 I find very often that the two secondarys are of different dc resistance. The one side is wound on top of the other and so is of greater diameter which results in a longer winding having more dc resistance. This is often compensated for by giving the longer secondary a slightly higher voltage to even out the drop under load. I have wound many and I allow a volt or two to account for the asymetry.
Hi jonka1, thanks, I know that now, another commenter pointed that out to me earlier. It was so obvious when it was pointed out 🤦♂️ Thanks again 😀
Loktal valves. Tilt towards dimple to release lock when removing from socket. 7 indicates 6.3 volt filament. 7Y4 is like a 6X4.
Hi Daniel, thanks. I didn't want to tilt these valves and open the sockets up any more that they were but I know what you are saying, thanks 👍🙂
Years ago at work
Years ago, at
work for RCA Labs , I ran a program on tube quality and did
research testing on the Loctal tubes. They seem to have better transconductance over time and have a higher Q with RF signals.
No doubt a good design but the bases were low quality and the base design precluded me getting to the sockets to retension them. The radio is still working though 🙂
36:05. Wild Cherry.....some of my hometown music. 😁😁
I played that funky music just for you Jim, thanks 😄
@@DavidTipton101 😂😂 Thanks, mate. Cheers from "The Home of the World's First Commercial Broadcasting Station - KDKA", 100 years young on November 2, and still going strong.
@@jimmissenda6590 That sound interesting, I'll look it up 👍😀
Muy buen trabajo mi amigo
Gracias mi amigo 😃
Great classic songs there
Yep, that station has gone to sport unfortunately 🙄
"caution don't poke your fingers in there!" should be sufficient warning and a standard sticker on every electrical appliance large or small🤣
Sage advice Chris 😄
The sound quality is amasing even with chassis out of cabinet!!!!!! A keeper Dave!!!!!
Hi willie, it does have good sound, I have it running now as I type 🙂
13:59 You call thay good sound quality?
Great methodology, Dave, your step-by-step troubleshooting with explanations is going to help a lot of people in this hobby. Yet again, with great awareness amidst great patience you've snatched victory from the jaws of defeat. What a nice find on that transformer! All the cleaning, painting, and de-rusting came out great. What kind of paint did you use for the transformer? It looks like what I've seen called "hammertone" or "reverse hammertone". It does look very professional. Preserving the label was brilliant. Thanks again!
Thanks Jeff, I had to watch some of the video, it was pretty awful quality 😄 The paint I think is a rustproof gloss enamel, I don't think it's a hammer finish though, The colour is Monument 👍🙂
@@DavidTipton101 Thank you, Dave.
Hi David Westco products was a manufacturer in NZ which operated from I think 1934 to the mid fifties, maybe the phoenix was an attempt to resurrect the company after it failed, its not a brand I believe they typically used. If you contact the vintage clubs in NZ you should get more information.
Hi Alan. I have found out a bit more since I did the video. It was imported from Westco in NZ by a local department store in Brisbane called Overall. The store was burnt to the ground in 1906 and rebuilt, the owner named a number of items Phoenix as a tribute to the store rising from the ashes. I scanned the NZ radio sites at the time but couldn't find a similar set with similar valves 🙄🙂
Here is a link to the story: heritage.brisbane.qld.gov.au/heritage-places/764
@@DavidTipton101 thanks David I revisited this restoration because I've never seen another receiver like this one, despite the oddity of the design it seems a well made unit with good clarify .
The “tubes”, valves are called loktal base. They are known for dirty contacts but easily cleaned.
Hi Ralph, yes, it's spelled Loctal but you are correct, they have trouble with the pin contacts 👍🙂
Oh yes. You are correct. I thought I remembered seeing it spelled with a k. Oh well. I enjoy your videos. Keep going. 👍🏼
2:12 what are those weird hollow things inside the cabinet on the right side? are they meant to be there?
No RJ, those are mud wasp nests, the damn things are all over the outside of the house after it rains. Here is a link to Wikipedia: en.m.wikipedia.org/wiki/Mud_dauber
@@DavidTipton101 yuck. I hope you removed them and no wasps ended up inside your house.
@@RoughJustice2k18 Haha, No they were empty shells thank goodness 😀
We have those in the US also, what a mess.
Hi Mr. Tipton those valves are called Loktals. There is a knack to removing these: locate the little bump on the base, move round 180 degrees & gently rock it back & forth in that plane if you see what I mean.If the valve is even slightly loose in the metal skirt, use a screwdriver to provide gentle uplift. Philco in the USA made extensive use of these valves & the Philco's manufactured here in NZ also used them. Interestingly enough, in the When I Look Back column in EA (1990') Mr. Williams - ore was it a contributor - said this type "should never have happened"! Ohh & as to the insectoid invaders - they're definitely Aussie by birth:) Good skills sir.
Thanks 6A8G, Yeah I forgot under pressure 😉 I should have checked beforehand. I have seen people explain that removal method before but I couldn't bring myself to do it, it seems harsh on the pin contacts but I will try it next time and see how it goes. You might be right with the Aussie speaker bugs, I don't recall restorers from other countries having the same problem but nearly every radio I get has been affected 😃
It is my understanding that Loktals were invented so Philco would not have to use the Octal tubes invented by RCA. There was also a tuning eye tube developed by Zenith to avoid using the RCA developed 6U5. It turns out that Zenith violated some RCA patents and had to stop using the tube it developed. These tubes are very rare today.
Nice one! Any chance of seeing A classic Norwegian set, like a Tandberg, for The Tipton Touch? Too bad they are so expensive now. Otherwise, that may have been dispatchable to Aussie. Norway has all bud lost FM, AM..In favour of the already-outdated DAB+..I` ve missed classic radios for Years. Since I had my old EL34 Philips, built in 1948..
Hi Bjørn, thank you. I don't have a Tandberg, can't say I've seen one here. I heard FM was being phased out as well as AM in parts of Europe. Seems like a lot of waste being produced with old AM and FM sets being trashed 🤔
@@DavidTipton101 True. We had a trade-in program going for a while. Though, loads of Top tuners have now either been sold out of Norway , scrapped or exchanged for what I personally deem to be inferior quality substitutes. Too bad, as my country once produced some world-beater sets..😟
Yes... loktal tubes, a military design intended to keep the tubes securely seated in rough physical environments, and the surplus of which found its way into civilian electronics, actually became infamous for poor pin to socket connections. When the connections were functional, there might have been a little better performance compared to octals due to the shorter, more direct leads into the tubes.
It was further exacerbated by the socket design which didn't allow reworking the tension on the contacts. the radio still works well today with no sign of the pin/socket issue thankfully 👍🙂
@@DavidTipton101 Great. Yes, I saw how you clinched the socket pin contacts tighter from the top and wire brushed the tube pins with the Dremel.
Decades ago, an EE lab administrator at a university I attended in the USA had a small jar of a silver paste material called Cool-Amp Conducto-Lube. I was thinking that this would be ideal for coating erratic tube socket contacts.
They're still in business. It might be a USA order from Australia.
www.cool-amp.com/conducto-lube
By the way I saw "ap" as a marking on the end of a frequency denominated dial of an old New Zealand radio. What does that mean? Is it a local way of indicating "AM band"?
@@SeekingTheLoveThatGodMeans7648 The cool amp paste doesn't seem to be available here, there may be a equivalent I can get locally, thanks. The AP had me stumped as well but I think it means Adjustment Point, due to the large pointer that may slip during operation of the radio I think the owner can wind the tuner full clockwise and reset the pointer to AP and retighten the centre knob, sounds good anyway 😄
@@DavidTipton101 Maybe... after I mentioned it, I saw that it was on this radio too. The other one was on some other Aussie restorer's channel, or my memory has gone bonkers momentarily. A hack for slippery dial cord strings.
Edit: confirmed on the bonkers. It was this same radio. That's what I get for watching radio restoration too late at night.
@@SeekingTheLoveThatGodMeans7648 I wondered when you said "other Aussie Restorers Channel" there isn't a lot around. When I aligned it I didn't click that it was the far end of the dial mark, I will realign it one day using the AP marker 🙂
"Loctals" were used in portable and car, ship, and aircraft radios to keep them in their sockets if they were under a lot of vibration stress. I have some in storage along with 1,500 others, some receiver and some transmitting tubes (valves). The whole lot will be sold when I pass to someone who will USE them for radio restoration, not for resale profit. All have been checked, the rare ones sent off for rebuilding if they didn't pass my requirements. I don't think it will be anytime soon, but at 63, you never know. I need 1T4 valves for restoration projects on several old regen receivers, so iif you have some hiding in your closet or junkbox, let me know? Thanks!
Haha, I also have a large stock of tubes but never the ones I need 😁 You should be able to get 1T4 tubes locally, I assume you are in the US or Canada, ebay or The Tube Store should reveal some.
About 26-40 in was an indecisive moment for you. “So much work for what reward. It will look good again, maybe.” As long as the wife knows you were talking to the radio and not about the new makeup she had just purchased. Sorry David but I had to laugh because this one was messing with your head.
Ha-ha, that's a good one Graham, I think i was talking to the radio 🤔😄
Nice work. I found it interesting that your mud wasps' nests are identical to our dirt daubers' nests here on the other side of the planet. Wonder if they're the same species.
Hi Wayne, I imagine so. I think their real name is Mid Daubers. They sure make a mess of my white rendered house but I moved into their territory 😏
. My frand hi thank you for thes video Abdul.
It's my pleasure Abdul 👍🙂
I disagree that it's ugly! It reminds me a bit of American ZENITH sets from the '50s. You want ugly?! Look no further than European sets from that era. Thank you for sharing. Fun and educational video.
Hi Wayne, yes I like this one, it has a very American brash look. You want ugly, have a look at my French Unic radio I did not long ago 😀 ua-cam.com/video/cqvQD_AK938/v-deo.html
Why does its radio dial only span from 600KHz to 1,500KHz?
4:23 Messy job there with that blob of goo. Was that a repair job too?
The scale is marked from AP to 1500kHz that doesn't mean the tuning is limited to same.
I assume you didn't actually watch the video, that was wax, presumably from the transformer but not positively identified.
That's the broadcast or medium wave band, it is slightly short at the ends but not much.
With transformer windings, it's not unusual to find an inbalance in DC resistance readings relative to centre tap. Several radios in my collection are like this. It happens in PP output transformers also. Uncle Doug who restores 1950's & 1960's guitar amps says this is not unusual.
Hi 6A8G, yes that had me puzzled at first until it was pointed out to me that the windings are laid on top of each other so one winding will be longer than the other but with the same number of turns. It was a light bulb moment 😀
@@DavidTipton101 & me too! I never knew the actual reason - I just accepted that this was how it was. Thank you so much for explaining. I think this revelation deserves a wider audience!
I am a long-time subscriber to Uncle Doug, he is the man with old guitar amps...Mr. Tipton is the man with these old radios! I never really understood the reason why this is true so KUDOS to you sir (Mr. Tipton) for explaining it!
yes they are unbalanced because the inside winding has a smaller dia - have always seen it so.
Hi Mr David, I'm quite new to your channel and have been watching your videos lately because I just bought my first vintage radio and I'm trying to restore it (and I know I can get some restoration tips here and there from a knowledgeable fellow like you--so thank you!). It's a Collier & Beale Model 515-2 and it was made here in NZ just after the war. I've replaced all the caps and would like to try and power it up. However, because this is my first restoration project, I don't have a variac and isolation transformer. What I can only do is make a simple dim bulb tester connected directly to the mains. Would that be enough? (I measured its transformer's resistances to check for shorts and it seems pretty healthy like the resistances you measured on the new transformer you got for the radio you're restoring in this video.) Also, the chassis of my radio is pretty rusty. What would be the best/cheapest way to remove it? Would you recommend using a chemical rust remover or should I just sand it down? Thanks for all and advanced Merry Christmas!
Wow, where do I start 🙂 The best and cheapest is the dim bulb, you almost don't need anything else (an isolation transformer is a good idea though) , your C&B has a transformer so you should be OK. Do not take any chances though, I always 'tap' any part of the radio with my finger tip before grasping it or use the back of your hand. Avoid touching the radio with both hands so as not to make a circuit through your body. You will need an incandescent lamp for the dim bulb about 40 to 60 watts. It should come on bright then dim them come on slightly brighter as the current starts to flow as the valves start conducting. If it doesn't go dim after a while it has a short. The bulb will protect the radio if it comes on bright so there is no screaming rush to cut power. The rust is always a problem and I treat it on a radio by radio basis. If it has a lot of rust you need to treat it with a rust converter or rust remover. How you treat it after that is up to you but it needs protection one way or another, usually with rust proof paint. Small spots can be ground off or treated and touched up again with paint. It depends on the radio, if it's a classic some folk get them re-plated or just treat the rust and clear coat it and respect that it's old and that's how it should look, if it's just a radio with no real value do what suits you best 👍😊 Remember, that thing can kill you but with common sense it is a lot of fun 🙂
@@DavidTipton101 Thanks very much for replying so quickly Mr David! I'll certainly note down your advice. Cheers from even down under!
I note your request for info was a year ago - how did you get on? If you are still learning and restoring radios, go to the NZ Vintage Radio Society forum here nzvrs.freeforums.net/ and join up. There's plenty of people who can help you with your projects (including me!) and lots of information available.
I think the tubes (valves) were called "loctals" , locking octals. Not too popular, I saw them from radios in the 40s and 50s.
Hi Fred, yes that's correct, I couldn't think of the name at the time. I also get the name confused with rimlocks 🙂
@@DavidTipton101 I am a retired E.E. worked in semiconductors most of my career. I used to have a small radio repair business in the 50s (I was about 14) and I enjoy seeing your repairs. I wish I had all your tools and setup. I shall watch your videos and enjoy vicariously.
@@SuperFredAZ Thanks Fred, I get a bit better at it in my later videos 😏
Hola amigo mui lindo esta noche escuchare un radio de 1938 alos chino en español rradio china internasional despues radio japon rumania ... Chao juan
Esa es una gran idea, Juan. Siempre me pregunto cómo es el origen de estas transmisiones. Chao 😃
Hola amigo esas tranmiciines son en hoda corta abian artas radios en español los rusos yano ... Rumania radio praga quen varias internacionales .chao ...juam
7Y4 IS A RECTIFIER
Thanks Arthur 🙂