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-   Early B&W and Projection TV (http://www.videokarma.org/forumdisplay.php?f=19)
-   -   Wonderful score today (http://www.videokarma.org/showthread.php?t=260516)

Sandy G 01-11-2014 10:05 PM

Homina ! Homina ! Homina ! (grin)

bgadow 01-11-2014 10:05 PM

I've often daydreamed of stumbling upon some electronics engineer who had retired down this way and still had a set like that tucked away in a corner. That's one of those finds where you can't grab the old wallet fast enough!

baursam 01-11-2014 11:52 PM

Amazing score!!!! I too have the dream of walking into a garage sale with an old prewar TV tucked away in the corner. I would have to bite my lip til it bled from keeping my smile from giving it away!!

Kevin Kuehn 01-11-2014 11:57 PM

Wow, Dave. What a way to start the Happy New Year. :thmbsp:

Phil Nelson 01-12-2014 12:57 AM

Wow, the score of a lifetime. Congratulations!

I guess there are still a few cool things to be found "in the wild."

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

Steve McVoy 01-12-2014 07:32 AM

Congratulations, Dave. Nice find. It even has its 5AP4, which might still be good.

We have accounted for 23 factory made sets, plus 11 of the kit models, which use a very similar chassis:

http://www.earlytelevision.org/database_prewar.html

About 15 prewar sets become known to us every year:

http://www.earlytelevision.org/sets_added.html

Some of these have been in the hands of collectors for years and have just been reported to us, but most are new finds, such as Dave's.

cameronflyer 01-12-2014 08:15 AM

WOW! WOW! WOW! Is all I can say! What a find.

hi_volt 01-12-2014 08:33 AM

Wow. First one of these I've seen. Be sure to post pictures as you get into it. You just never know what you're going to find under some rocks these days!

TV-collector 01-12-2014 02:41 PM

Congratulations from Germany!!!!!!!!!!!!!!!
All I can say: God loves you!!!!!!!!!:yes:

TV-collector :stupid:

David Roper 01-12-2014 02:47 PM

I didn't notice before the 6V6 video amplifier which means it's an early-production set. Even better. :)

Steve D. 01-12-2014 03:12 PM

Congratulations David.

Seems the new year is bringing much good news to you.
Outstanding find.

-Steve D.

wa2ise 01-12-2014 03:22 PM

Looks like it was built for AM sound. If so, and if you get it restored and working, you could customize an RF modulator to produce AM modulated sound instead of FM. Most RF modulator chips have a separate video modulator and FM sound modulator. You'd need to provide a trap in the video signal to remove energy at 4.5MHz, so it doesn't contaminate the spectrum where the AM sound will be found once the video is modulated onto the RF video carrier. And you'd need to build an AM modulator at the sound carrier frequency.

David Roper 01-12-2014 03:33 PM

Far from absolutely necessary, as the success of slope detection with the unmodified restored sets at the ETF has proven.

Dave S 01-12-2014 05:02 PM

Quote:

Originally Posted by Steve D. (Post 3092514)
Seems the new year is bringing much good news to you.

Steve,

Yes it is. I think maybe I should go out an buy a lottery ticket right now!

-- Dave

Dave S 01-12-2014 05:05 PM

Quote:

Originally Posted by wa2ise (Post 3092515)
Looks like it was built for AM sound. If so, and if you get it restored and working, you could customize an RF modulator to produce AM modulated sound instead of FM. Most RF modulator chips have a separate video modulator and FM sound modulator. You'd need to provide a trap in the video signal to remove energy at 4.5MHz, so it doesn't contaminate the spectrum where the AM sound will be found once the video is modulated onto the RF video carrier. And you'd need to build an AM modulator at the sound carrier frequency.

WA2ISE: that would probably be beyond my "shade-tree engineer" capabilities, although I'm certain all of you guys could and would talk me through such a project.

I'm currently discussing the merits of restoring such a set vs. just leaving it in original condition with a fellow collector. I wonder if anyone wants to jump in on that discussion? Maybe it would be appropriate to start a new thread for that.

-- Dave


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