What is this?

[polaraman]

http://cgi.ebay.com/ws/eBayISAPI.dll...Name=WDVW&rd=1


polaraman

[andy]

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[mg196]

That is either a jiggamahwhatzit or a electrothingamajig. RCA was famous for the latter.

[3Guncolor]

It's a cable tv Headend modulator from about 20 to 25 years ago. RCA sold Headend eqipment for a while and Zenith made a lot of Ztac cable boxes.

[bgadow]

Ah, yes, from the days when RCA still amounted to something....

[Chad Hauris]

This probably would be a good unit to use if you wanted to mix in a modulated signal from a DVD player, say, into a private cable system feeding your TV's along with antenna channels. The RF modulators in VCR's generate a lot of harmonics wiping out adjacent channels...this unit should be able to keep the output right on the channel it was designed for.

[old_tv_nut]

Note this unit has the group delay predistortion filter (Fredendall filter) installed on the back. Cheapy modulators don't have this. This makes the relative chroma/luma delay of a composite input signal match the FCC spec, which compensates the typical receiver IF group delay and keeps the color exactly superimposed on the luma.

[polaraman]

It closed with no bids. Somebody could have got it for the starting price of $10. Better hurry!

polaraman