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bhaass
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Fri 17, 2012 9:11 pm |
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Joined: Feb Thu 16, 2012 10:39 pm Posts: 8
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Okay those directions helped a lot. Here are the pictures. It may not be as bad as I previously thought. Most of the mods seemed to be confined to the lefthand (looking from rear) compartment. Behind all the wiring spaghetti I think I can see that the original tube sockets and caps. are there. I think most of the power supply is there too.
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File comment: note the extra matching transformer and power transistor attached to the periphery of the speaker at 9 o'clock and 12 o' clock respectively

100_2540b.jpg [ 66.4 KiB | Viewed 208 times ]
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bhaass
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Fri 17, 2012 9:17 pm |
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Joined: Feb Thu 16, 2012 10:39 pm Posts: 8
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init4fun
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Sat 18, 2012 6:49 pm |
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Joined: Apr Mon 18, 2011 11:35 pm Posts: 698 Location: At My Computer !
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 Hi bhaass , I'm really glad that my directions worked for you so you can post photos . Now , this is the thing here , , , , If you really want to restore that radio back to original circuits , you are going to need to know what the original circuits were , and what was removed to make room for the "modificaton" of the hacked in transistor equipment . This is where you should not only be trying to chase down a schematic diagram of the radio's wiring , but also you should REALLY be getting in touch with Doug Houston about his offer of a free , complete chassis ..... If the "technician" who hacked that Sparton threw out even one part to make room for the transistor circuits , you'll pay hell tryin to find these parts after the fact ... THAT"S why Doug's offer is so generous , Its not like you can just pop on over to your local radio shack and pick up parts for a 1930s Sparton !!!
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acoleman
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Sat 18, 2012 9:00 pm |
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Joined: Jul Mon 20, 2009 9:49 pm Posts: 690 Location: Los Angeles
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I think I have the Sparton Service Manual from the late 1920's to the early 1930's. Send me an email to remind me to check next week. acoleman@ifgbonds.comAndy
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Dale Davenport
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Sat 18, 2012 9:23 pm |
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Joined: Jan Thu 01, 1970 1:00 am Posts: 4944
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Jim Berg
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Sat 18, 2012 11:47 pm |
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Joined: Jan Thu 01, 1970 1:00 am Posts: 2729 Location: Northport wa. USA.
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First off welcome to the Forum and all the best to you and your wife. It looks like a nice gift. It does not look as bad as I would have thought. I do not own a 930, but did look in the service manual and have a schematic and parts list. Sorry no chassis pictures like some other models. I can copy them this next week and can mail them via the post office for you.
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doug houston
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Sun 19, 2012 12:00 am |
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Joined: Jan Thu 01, 1970 1:00 am Posts: 5002 Location: Ortonville, Michigan
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Well, it's such a mes, that you would probably not know where o start on it. It looks like what you have is restorable. That jackass pieced it together from a couple other sets, so it appears.
While my original offer still stands, you appear to have something to get started with The tramp grabbed all of the tubes from the set, probably, and doctored this mess up for a fat price.
I don't think you need another chassis. the speaker looks good from the rear, and the chassis look clean, and restorable. I'm still offering to help you however I can. Give me a PM, if you're interested.
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bhaass
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Sun 19, 2012 4:30 am |
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Joined: Feb Thu 16, 2012 10:39 pm Posts: 8
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I had some spare time today and did some more teardown of the radio. Look what I found with the speaker. You guys will get a kick out of this. Note the oval speaker secured to the original with a few wraps of wire! This guy is a true craftsman!
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100_2545.JPG [ 247.03 KiB | Viewed 168 times ]
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Eickerman
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Sun 19, 2012 3:26 pm |
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Joined: Jan Fri 06, 2012 8:47 pm Posts: 2410
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bhaass wrote: I had some spare time today and did some more teardown of the radio. Look what I found with the speaker. You guys will get a kick out of this. Note the oval speaker secured to the original with a few wraps of wire! This guy is a true craftsman! You ought to write up the restoration complete with pictures like this and post it on a web page. This stuff is priceless. Curtis Eickerman
_________________ http://curtiseickerman.weebly.com
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Jim Berg
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Post subject: Re: new collector help with Sparton model 930 Posted: Feb Fri 24, 2012 6:58 pm |
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Joined: Jan Thu 01, 1970 1:00 am Posts: 2729 Location: Northport wa. USA.
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Just send me an Email with your mailing address and I will send you diagrams and parts list and alignment instructions via the post office.
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DrRick
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Post subject: Re: new collector help with Sparton model 930 Posted: Jan Fri 11, 2013 2:06 pm |
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Joined: Mar Thu 24, 2011 6:23 am Posts: 64
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"This guy is a true craftsman!" I'm sure there are many ways of expressing that observation! I know this an old topic, but I just noticed it. I was pretty shocked when I got to the picture of the transistor radio "pop-riveted" into the tube compartment. The speaker was a bit more surprising to me inasmuch as the earlier pictures presented what appeared to be an in-tact speaker. I was thinking that the power transistor, etc.. that was added was to power the field coil. I have never seen such a "conversion". In reading the epay ad, I got the impression that the "conversion" consisted of replacing tubes with solid-state devices. This is an approach we took back in the 70's to update a set. Given the similarity in impedance and gain structure between FET's and tubes, that sort of conversion required little beyond the installation of the FET's and lowering the B+ voltage. The real reason I started this post was to offer the original poster a set of tubes should he decide to actually restore the set. When I say "offer", I mean gift. I feel bad for the buyer of this set and feel doubly bad given the situation. I wish him all the best. bhaass, PM me if you would like the tube set. 73 Rick bhaass wrote: I had some spare time today and did some more teardown of the radio. Look what I found with the speaker. You guys will get a kick out of this. Note the oval speaker secured to the original with a few wraps of wire! This guy is a true craftsman!
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phlogiston
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Post subject: Re: new collector help with Sparton model 930 Posted: Jan Fri 11, 2013 4:29 pm |
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Joined: Dec Thu 31, 2009 4:28 pm Posts: 1512 Location: Oregone
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THat is a nice offer since I think that set used a pair of 182Bs. Hard to find.
_________________ Vigorously Supporting the First Amendment
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gary rabbitt
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Post subject: Re: new collector help with Sparton model 930 Posted: Jan Sat 12, 2013 1:04 am |
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Joined: Jan Thu 01, 1970 1:00 am Posts: 13096 Location: Tennessee,USA
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The post is almost a year old, I wonder if anyone has heard from the OP for an update?
_________________ Gary Rabbitt
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Bob57
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Post subject: Re: new collector help with Sparton model 930 Posted: Jan Sat 12, 2013 2:41 am |
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Joined: Jun Wed 01, 2011 6:19 pm Posts: 52 Location: Sacramento, CA
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Gary, and all, I just found this thread also since it appeared on the first page. Anyway, I read it all and I can bet there's a lot more to this story.
I also wonder how his (the op's) wife is doing. She's quite a wonderful wife to buy him this radio!
Now for a comment on the seller, it looks like the seller was the wife of a radio guy but she most likely knows very little about radios. Is she (the seller) a widow? I feel like she did not know much more than she wrote up in the add but that's just a guess.
One thing that comes to mind is that we really do not know the story of the radio. There's so many variables here that we really should not guess, but I'm going to anyway. The radio guy, the seller's husband, liked the cabinet, so made a working radio out of it. I know it's not right in our minds but he went through a lot of work to do what he did. Did he do this for a customer, friend, or himself? Did someone ask him to do this? We'll most likely never know.
Just my thoughts. I hope we hear from the op soon.
Bob
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