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Videokarma.org TV - Video - Vintage Television & Radio Forums (http://www.videokarma.org/index.php)

- Early B&W and Projection TV (http://www.videokarma.org/forumdisplay.php?f=19)

- - motorola vt-71 HV capacitor trouble (http://www.videokarma.org/showthread.php?t=256864)

bandersen

01-07-2013 08:26 PM

Quote:

Originally Posted by DavGoodlin (Post 3058541)

BoB,

Blonde VT-71B-A, ch# TS-4G is dated June 25, 1948
The serial number shows 20430, but it looked out of sequence per your list:scratch2:

Hmm, the 'G' revision and date fit, but the serial# sure doesn't.

Quote:

Originally Posted by Tim (Post 3058614)

TS-4? 4703 no date, no FT, cad plated chassis
TS-4J 57280 Nov 10, 1948
TS-4J 65152 Jan 7, 1949
TS-4J 79677 Mar 22, 1949

Thanks. It's a drag that the 1st generation chassis don't seem to have a date anywhere.

WISCOJIM

01-11-2013 05:54 PM

3 Attachment(s)

Here are some more for your list Bob. Only one of the three had an easily visible date stamp. Is this the first "4F" set to show up?

4D 14025 Mar 10, 1948

4F 29295

4J 53608

bandersen

01-14-2013 01:24 AM

Thanks. Yes, it's the first 4F I've come across. Still no record of a B, C or E.

ChrisW6ATV

01-15-2013 02:24 AM

I think one of my two VT-71s may be a TS-4B; the other is a TS-4D I am pretty sure. Both have channel 1. I cannot easily get to their backs to check the versions and serial numbers, but I may be able to in the near future.

teevee

01-19-2013 01:50 PM

1 Attachment(s)

TS-4J 54402 Oct 6, can't make out the year..

bandersen

01-19-2013 10:52 PM

Quote:

Originally Posted by ChrisW6ATV (Post 3059302)

It seems they didn't make very many TS-4B or TS-4C. Maybe a few thousand of each.

Quote:

Originally Posted by teevee (Post 3059726)

TS-4J 54402 Oct 6, can't make out the year..

Thanks. It should be 1948.

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