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 Post subject: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Oct Thu 31, 2019 10:23 pm 
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Looks like the 500, BUT this one is different from the ones we discussed in this thread.

https://www.antiqueradios.com/forums/vi ... 4&t=347451

Unbeknownst to me, this radio was a kit. :shock:

Apparently is a brother to the 2213/2214, Color isn't quite black, has a slight brown tint(maybe just dull?). Has only two transistors in front end, plus audio driver and pair of outputs. Plays as well as I'd expect, may get a bit of polish and that's going to be it.



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Original builder even left his ID print,

Wonder if that hurt?


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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Nov Fri 01, 2019 3:17 am 
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Gives new meaning to the words printed circuit. :lol: :shock:

I'm surprised it works, several of those adjacent soldered pads look pretty dicey.
-Ed

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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Nov Fri 01, 2019 4:04 am 
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Let's see the top side of PCB !

Don't think their finger was on that solder very long---have done that myself...

John


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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Nov Sat 02, 2019 4:05 pm 
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Ed in SoDak wrote:
Gives new meaning to the words printed circuit. :lol: :shock:

I'm surprised it works, several of those adjacent soldered pads look pretty dicey.
-Ed
Guess after first joint, builder wasn't going to press the remainder into place? :wink:

OR maybe after first joint seemed like a good idea?


Pict of component side of chassis.


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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Nov Sat 02, 2019 4:17 pm 
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Nice robust componentry---but Sears and those short ferrite rod antennas ! Used the "stubs" on their earlier "700" & "800" sets with tuned-RF amp stages also...

john


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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Sep Tue 21, 2021 3:03 pm 
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After almost two years, I decided to take a second look. Rather lame, poor sensitivity, dial scale off by 50Kc.

Soooo I decided to align it, tweaking tuner osc & RF helped slightly but dial scale still off. Full alignment includes setting osc coil for 600Kc. Found IF & osc coil settings were nowhere near optimum. Dial scale now dead on at either end still off maybe 20Kc in mid freq. Sensitivity slightly better, guess one can only expect so much from a two transistor RF/IF circuit. On plus side, has surprisingly good audio quality. No doesn't have room filling sound, still very good for personal use.

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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Sep Tue 21, 2021 4:13 pm 
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Location: Indianapolis, IN
Hey Tom,

Glad you made improvement ! Any others you plan to pull off of shelves ?

Have "revisited" a few of my earlier refurbs and was able to make them a bit better functionally and/or cosmetically. A few radios actually went bad just sitting on shelf---transistors, speaker voice-coil opening, volume controls becoming noisy again... Not good ! Would take a LONG time to go through all of 'em...

John


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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Sep Tue 21, 2021 4:47 pm 
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Hey John

Only thing prior was try batteries. Guessing since it's a kit was never properly aligned.

Was mentioned on '50s Transistor Radios Youtube channel, earlier 500 with reflex audio amp have somewhat distorted audio. Tried my Coral colored set and that's true for mine. Sometime in next couple weeks, I'll plan a look at audio waveforms with scope.

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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Sep Sun 26, 2021 4:55 pm 
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35Z5, it's interesting to hear that your Silvertone "500" has the same audio issue. That's more evidence to the problem being inherent to the reflexed design.

As to the Sears Seek kit, somehow I missed this thread when it was first posted. This kit version is quite rare, and I have only seen 3-4 examples of it, one of which I own. Mine had been crudely spray-painted red (it was originally grey as well), and I haven't done much with it.

Radiomuseum has some pictures of an unbuilt example: https://www.radiomuseum.org/r/sears_roe ... _7498.html


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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Sep Sun 26, 2021 6:37 pm 
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At normal volume my reflex 500 actually has decent audio, detected audio viewed with scope produced normal patterns. What "tricks" one is how easy it exceeds a comfortable level. By 1/3 volume it's very loud & edging into distortion, whereas the SEEK version requires closer to 1/2 rotation to be able to hear it..

Thanks for link, never thought about RM having catalogue info.

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 Post subject: Re: Another Silvertone 500 (Seek Model 7498-KIT)
PostPosted: Sep Tue 28, 2021 6:22 am 
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dial looks different. the radio looks nice and clean!


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