http://cgi.ebay.com/1950s-RCA-television-TV-station-monitor-old-vacuum-tube_W0QQitemZ200287345440QQcmdZViewItemQQptZLH_De faultDomain_0?hash=item200287345440&_trksid=p3286.c0.m14&_trkparms=66%3A2|65%3A10|39%3A1|240%3A1318

Just FYI, this monitor has no built in B+ power supply. There is a filament supply but that huge 10 pin Jones plug near the bottom is where the BIG power supply plugs in. There are two versions of the power supply, the earlier is all tube and a later version solid state.

looks like a nice winter project for someone

Interesting. Knowing nothing about broadcasting equipment . . . what would be displayed on the little oscilloscope screen? If something basic like signal strength, you'd think a simple meter would do.

Just curious.

Phil Nelson

SOMEBODY wants th' damthing...Nearly 6 days out & 40 bux already...For something that is old, prolly won't work, & rather obscure, thats pretty good...

Interesting. Knowing nothing about broadcasting equipment . . . what would be displayed on the little oscilloscope screen? If something basic like signal strength, you'd think a simple meter would do.

The oscilloscope screen is a waveform monitor. It displays the video signal as a trace, for adjustment of video levels, pedestal, and observation of sync signals. Waveform monitors are still in use in television stations to this day. RCA sold this unit as a "Master Monitor", to incude the video monitor and waveform in one unit.

Gilbert

You could put some nice tropical fish in the large area and some gold fish in the small area. :D

I'd love to chase after it, but it would never survive shipping to California.

David

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This is along the lines of the monitors in Julian's remote TV van, as outlined in another thread. I noticed those scopes there, too, and found it interesting.

A quite tempting item indeed..........Does this model require external sync ?

Yes, and even more: H and V Drive, Composite Blanking as well as that huge [not included] power supply I mentioned above. The various signals would come from a broadcast sync generator. Such generators are found on eBay from time to time, like Tektronix 146 through 149 types. The original from RCA had almost 100 tubes and filled a 6 ft high equipment rack.

Yes, and even more: H and V Drive, Composite Blanking as well as that huge [not included] power supply I mentioned above. The various signals would come from a broadcast sync generator. Such generators are found on eBay from time to time, like Tektronix 146 through 149 types. The original from RCA had almost 100 tubes and filled a 6 ft high equipment rack.

Really? Were these signals inputted through the power supply multipin connector? Because the picture in the auction of this monitor only shows two UHF style connectors for video on the back, which I presume are for video in and loop out.

David

It originally had a green overlay over the scope tube. Either it went bad or someone didn't like it.