http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5598262767&category=88433&ssPageName=WDVW&rd=1


polaraman

---

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

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.

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

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.

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.

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

polaraman