I enjoyed this series. I recently purchased a 315 for .99 cents. I'm halfway through the restoration. Can't hardly wait to use it. Thanks for the videos. Brad
Nice job Buddy. I just loooooove restoring project kits. Always have to wonder what your going to run into in them. Unfortunately a lot of people get in a rush and want to get their new (well new back then) equipment up and running and often forget to solder a connection. Heck, here of late I have been finding that on factory built stuff like the unsoldered meter wires on the BK1040 and filter cap on the Sonar 2340. Your generator will make a nice addition to the bench. Mike
Thanks Mike. Yes you can run into a lot of strange things when folks put these together as a kit. Specially when they work lol. This one was very fun to sit down and trouble shoot and do the repair. I may jump on a Heathkit IT-12 next. Thanks for commenting ole friend.
I'd definitely replace that 6X5 with a JAN 6X5WGT...those things are notorious for developing shorts which can result in the destruction of the plate transformer.
Hi. All my training came from trial and error. Reads lots of books on electronic theory. Self taught. Started when I was 12 years old. Grew up on a farm and learn to fix things on my own. Never had any educational training and even quit high school in the 10th grade. IN the 80's I did go back and get my GED but that sums it up on any education.
I know this is an old video but I have a 315 that I'm working on and I was wondering if you use any sort of attenuator when you hook it up to the antenna port of your IFR-1200S. I don't want to overload mine when I begin the alignment procedure.
Hey Buddy, I just scored an EICO 378 Audio Generator and I was wondering what this would be handy for specifically. Your opinion would be greatly appreciated. I'm new at this, and my interests are vintage test gear, and vintage guitar amps, and audio amps. So I figured I'd grab any gear I can for cheap and change bad caps, and verify proper operation and accuracy, in hopes it will be useful on my bench. Thanks!
I think I just answered my own question. I ran across an old military video that made it all clear. "Circuit Testing: Signal Generators (1951)" your videos are more fun to watch. Looking forward to your next!
Since you will be working on guitar amps the 378 will be a handy piece of gear. You need two more items, a scope and a dummy load. This way you can inject an audio signal into the amp and look at the waveform on the scope. This way you can see how clean your signal and work is. Nice score on the vintage Eico.
@@TheRadioShop Thanks Buddy! I've got a few scopes that work great, but I'll have to work on the dummy load. I've got a bunch of small power resistors I.e.: Dale RH-25 25 watt at various ohms (7, 12, 25, 60 ohms) maybe I can cobble together a very basic dummy load that will work till I can afford the nice stuff all the cool kids are using. Any pointers would be greatly appreciated. Thanks again!
Great Job Buddy! Did you get the bumblebee cap ( 13:18 ) above the band switch too? Sure is a nice clean unit, and that big dial sure make the signal generator look great. I look forward to your EICO scope video as well. Take care.
Hi Paul. Yep, replaced that one also along with the safety cap. I am seriously considering changing out the input line filter. I have never liked this type that they used. It appears to be a decent generator. I really like the big dial on this one. Going to try and go through the old scope over the next two weeks and upload a video. Thanks for watching my friend. Appreciate your comments.
Nice job on it. Wish I was better at the external cleanup and painting. Just a question: What are your thoughts about changing the line cord to a three-wire? Do you lose the death cap when you do it?
The clean up and painting is not that bad to do. Think of it as an art. I can be learned. Start with small stuff and keep working up. I always change the line cord to 3 wire. Also remove any by-pass caps from the line cord and install safety caps. Hope that helps and thanks for watching.
Where did you find that schematic? The ones I've found online have all been pretty blurry, enough so that it's hard to tell what the numbers are on the various components.
Great video !! Can you please tell me what make and model of spectrum analyzer you are using? I looked on E-Bay and most of the ones offered there are JUST a bit out of my price range right now. Thanks ~N4TYX~
Thanks, The SA I am using in this video is the IFR 1200 service monitor. I also have the IFR 1200 Super S. These are not cheap as they are RF signal generators and receivers. Along with these I also have the B&K 2620 with tracking gen. They can be found at good prices at times. I also have the Rigol DSA815-TG.
Hi Buddy, Great video, don’t get no better than this. If you didn’t have to eat you could quit your day job and just make videos, the XYL might not like that thou. ;>) Another good piece of test gear ready for work. I hope to get into my EICO 377 soon. Working on a HP 201C now. Life is good when you’re in the shop. 73
Thanks Larry. Yes wish I could do this full time. Wife would not mind as long as I was making some cash :-) Good luck on your repairs. Those are nice bit of equipment you are working on. I agree, life is good.
Got the 377 at Dayton for 10 bucks and the HP at Charlotte for 12. The HP is an early model #938 and so many updates were made had to redraw circuit from the device and service updates. All drawings I found were way off. Different tubes and much more. But it is working great now. 73
Hi That is a very nice restore . But the 6k resistor you changed is it damaged ? It's not out of tolerance a 6k ( 4k8 - 7k2 @ +/- 20% ) & you had to lash up a replacement + w/w have inductance ! I would have just left it .
I never did change the 6K resistors. I tacked a new one in place and checked voltages compared to the one that was original. So soldered it back in place. Thanks for the comment.
another great video? guess I'll show my ignorance and have to look it up but what's zero beat mean? I guess everyone else just knows that answer. I'm horrible watching Jepordy too.
Thanks, Lets see, zero beat. When you take two signals and adjust them together, one will sounds as if it cancels out the other. While on SSB you here a heterodyne signal from 2 stations. You can tune across the span and zero beat his signal with your own oscillator. Sort of hard to explain.
Nice job Buddy! I guess you'll replace the old cap across the line with a safety cap? Radio Shack used to sell a small self contained audio amplifier (Archer Mini Amplifier Speaker #277-1008C) that makes a great workbench tool for quickly checking audio signals. Keep the great videos coming! 73 - Dino KL0S
Hi Dino. Yes that was changed as well. But I really thinking about changing out the complete AC input choke coils that is it tied to. If this unit shorts there is not much protection to stop a fire. Going to upgrade it to a PCB with the chokes, safety caps and fuse on board. I used to have one of those mini speakers years ago. If I could get my hands on the schematic I may build one and make a video of it. Thanks for stopping in my friend. Always a pleasure.
What a transformation of a great old piece of equipment by a true expert. Thanks Buddy I enjoyed it.👍👍
Great video! One of the nicest looking Sig gens I've seen.
I enjoyed this series. I recently purchased a 315 for .99 cents. I'm halfway through the restoration. Can't hardly wait to use it. Thanks for the videos.
Brad
99 cents?!?! Damn, that's a steal! Was it in decent physical condition or was it all beat up & rusty?
Very enjoyable and informative video. Many thanks.
Very Good video. I got an old Heathkit around the shop i need to get going.That 315 sure looks like a nice unit.
Your process is amazing. Very logical attack on very annoying situations, both electrical and mechanical. :-)
I love the color of the VR150 tube..I had on in my Hallicrafters SX-71
Yes they are a pleasure to look at.
Nice one. Love those old sig gens. I did an old EICO 360 recently..the one with the Wobulator!. Very cool piece of kit.
Thanks, I just love old gear like this. Easy to use and work on. The 360 is a nice one also.
Nice job Buddy. I just loooooove restoring project kits. Always have to wonder what your going to run into in them. Unfortunately a lot of people get in a rush and want to get their new (well new back then) equipment up and running and often forget to solder a connection. Heck, here of late I have been finding that on factory built stuff like the unsoldered meter wires on the BK1040 and filter cap on the Sonar 2340. Your generator will make a nice addition to the bench.
Mike
Thanks Mike. Yes you can run into a lot of strange things when folks put these together as a kit. Specially when they work lol. This one was very fun to sit down and trouble shoot and do the repair. I may jump on a Heathkit IT-12 next. Thanks for commenting ole friend.
Love your videos, thank you so much. Your one of the best on here.
Really appreciate the nice comment my friend. Thanks for watching.
I'd definitely replace that 6X5 with a JAN 6X5WGT...those things are notorious for developing shorts which can result in the destruction of the plate transformer.
This is good advise
I need to look up and get some of those Richies that's a beautiful cap, Always looking for modern multisection versions
Yes they are very nice capacitors. Look good also. Seem to hold up well. Got them from Just Radio
Beautiful piece of equipment!
Thanks.
Well Buddy excellent vid..... Very informative. I really enjoyed watching... Thanks 73s
i am curious and maybe others are wondering....where did you get your training from? you have a great knowledge
Hi. All my training came from trial and error. Reads lots of books on electronic theory. Self taught. Started when I was 12 years old. Grew up on a farm and learn to fix things on my own. Never had any educational training and even quit high school in the 10th grade. IN the 80's I did go back and get my GED but that sums it up on any education.
I know this is an old video but I have a 315 that I'm working on and I was wondering if you use any sort of attenuator when you hook it up to the antenna port of your IFR-1200S. I don't want to overload mine when
I begin the alignment procedure.
You really should not connect to the antenna port. That port will only accept 1/4 watt max. Always use the RF port, this way you do not have to worry.
@@TheRadioShop Thank you sir.
Hey Buddy, I just scored an EICO 378 Audio Generator and I was wondering what this would be handy for specifically. Your opinion would be greatly appreciated. I'm new at this, and my interests are vintage test gear, and vintage guitar amps, and audio amps. So I figured I'd grab any gear I can for cheap and change bad caps, and verify proper operation and accuracy, in hopes it will be useful on my bench. Thanks!
I think I just answered my own question. I ran across an old military video that made it all clear. "Circuit Testing: Signal Generators (1951)" your videos are more fun to watch. Looking forward to your next!
Since you will be working on guitar amps the 378 will be a handy piece of gear. You need two more items, a scope and a dummy load. This way you can inject an audio signal into the amp and look at the waveform on the scope. This way you can see how clean your signal and work is. Nice score on the vintage Eico.
@@TheRadioShop Thanks Buddy! I've got a few scopes that work great, but I'll have to work on the dummy load. I've got a bunch of small power resistors I.e.: Dale RH-25 25 watt at various ohms (7, 12, 25, 60 ohms) maybe I can cobble together a very basic dummy load that will work till I can afford the nice stuff all the cool kids are using. Any pointers would be greatly appreciated. Thanks again!
Hi! I'm doing a restoration on one of these, and i was curious if there is any tricks to installing the BNC jacks without messing anything else up?
This was excellent! I subscribed. Thanks.
Thanks for the kind words and subscription Ted. I will try not to let you down.
Great Job Buddy! Did you get the bumblebee cap ( 13:18 ) above the band switch too? Sure is a nice clean unit, and that big dial sure make the signal generator look great. I look forward to your EICO scope video as well. Take care.
Hi Paul. Yep, replaced that one also along with the safety
cap. I am seriously considering changing
out the input line filter. I have never liked this type that they used. It
appears to be a decent generator. I really like the big dial on this one. Going to try and go through the old scope over
the next two weeks and upload a video. Thanks for watching my friend.
Appreciate your comments.
Great Video Buddy!
Thanks!
Thanks for watching Barry
Nice job mate gunner look out for a 315 after woching this big thumbs up
Thanks allan. I like the 315. Hope you can find one in good shape.
Excellent video and Job Buddy really enjoyed it! Thanks for sharing my friend. 73
Thanks Peter, glad you liked it. It was a fun repair my friend.
+The Radio Shop it was fun to watch Buddy. Take care
Thanks
Nice
Great Video!!
Thanks Clint.
Nice job on it. Wish I was better at the external cleanup and painting.
Just a question: What are your thoughts about changing the line cord to a three-wire? Do you lose the death cap when you do it?
The clean up and painting is not that bad to do. Think of it as an art. I can be learned. Start with small stuff and keep working up. I always change the line cord to 3 wire. Also remove any by-pass caps from the line cord and install safety caps. Hope that helps and thanks for watching.
Where did you find that schematic? The ones I've found online have all been pretty blurry, enough so that it's hard to tell what the numbers are on the various components.
Great video !! Can you please tell me what make and model of spectrum analyzer you are using? I looked on E-Bay and most of the ones offered there are JUST a bit out of my price range right now. Thanks ~N4TYX~
Thanks, The SA I am using in this video is the IFR 1200 service monitor. I also have the IFR 1200 Super S. These are not cheap as they are RF signal generators and receivers. Along with these I also have the B&K 2620 with tracking gen. They can be found at good prices at times. I also have the Rigol DSA815-TG.
Good video Buddy !
Thanks Dennis!
What type of caps were those large yellow ones? Also, you said radio dot com - what did you really mean? (that's not a parts website)
Will have to go back but they were electrolytic caps. And the website is justradio dot com
I did find this antiqueradios.com/forums/viewtopic.php?t=82320 and this since your reply www.justradios.com/PPTcapacitors.html
Great info, thanks.
Most appreciated, glad you liked it.
Hi Buddy, Great video, don’t get no better than this. If you didn’t have to eat you could quit your day job and just make videos, the XYL might not like that thou. ;>) Another good piece of test gear ready for work. I hope to get into my EICO 377 soon. Working on a HP 201C now. Life is good when you’re in the shop. 73
Thanks Larry. Yes wish I could do this full time. Wife would not mind as long as I was making some cash :-) Good luck on your repairs. Those are nice bit of equipment you are working on. I agree, life is good.
Got the 377 at Dayton for 10 bucks and the HP at Charlotte for 12. The HP is an early model #938 and so many updates were made had to redraw circuit from the device and service updates. All drawings I found were way off. Different tubes and much more. But it is working great now. 73
Hi
That is a very nice restore .
But the 6k resistor you changed is it damaged ?
It's not out of tolerance a 6k ( 4k8 - 7k2 @ +/- 20% )
& you had to lash up a replacement + w/w have inductance !
I would have just left it .
I never did change the 6K resistors. I tacked a new one in place and checked voltages compared to the one that was original. So soldered it back in place. Thanks for the comment.
W.here can i get a power transformer for Eico 950B.
First comment must be positive :-)
Congraz on first. And positives are always nice to have.
another great video? guess I'll show my ignorance and have to look it up but what's zero beat mean? I guess everyone else just knows that answer. I'm horrible watching Jepordy too.
Thanks, Lets see, zero beat. When you take two signals and adjust them together, one will sounds as if it cancels out the other. While on SSB you here a heterodyne signal from 2 stations. You can tune across the span and zero beat his signal with your own oscillator. Sort of hard to explain.
This video may help youua-cam.com/video/QCJ4cQGOQLI/v-deo.html
Nice job Buddy! I guess you'll replace the old cap across the line with a safety cap? Radio Shack used to sell a small self contained audio amplifier (Archer Mini Amplifier Speaker #277-1008C) that makes a great workbench tool for quickly checking audio signals. Keep the great videos coming! 73 - Dino KL0S
Hi Dino. Yes that was changed as well. But I really thinking about changing out the complete AC input choke coils that is it tied to. If this unit shorts there is not much protection to stop a fire. Going to upgrade it to a PCB with the chokes, safety caps and fuse on board. I used to have one of those mini speakers years ago. If I could get my hands on the schematic I may build one and make a video of it. Thanks for stopping in my friend. Always a pleasure.
21:23 If that's really supposed to be a 20% tolerance resistor, 5300 ohms is within the tolerance band.