Hello, I have an old vintage 1970's Zenith chromacolor TV, but the adapter broke off.
It was a female to female adapter, I think...

Which adapter would work on this ? (see pics)

TV model is Zenith SG2570P

It was a female F jack designed to be installed on the end of a cable, rather than being mounted in a panel. A direct replacement might be a bit tricky to find, but you could always install a standard male end on the cable, and add a F-F barrel connector to replace the original.

Was it like this ?

http://www.air802.com/files/connectors/Photos/F%20Jack%20(Female)%20small.jpg

I also have the option of using one of these:

http://img.alibaba.com/wsphoto/v0/492691255/Free-shipping-F-MALE-TO-RCA-FEMALE-COAX-CABLE-COUPLER-ADAPTER-FType-Male-to-RCA-Female.jpg

with this ?

http://ecx.images-amazon.com/images/I/41yRP-boUeL._SL500_AA300_.jpg

The missing piece accomplished what you pictured in post #4, basically a crimp-on female "F" connector. If the first item in post #5 is a twist-on F plug, then yes, that with the double-female adapter in the second picture would do the job, as N2IXK said.

Here is a pic of the cable I need if anyone has a spare !

(and a pic of the TV itself) :smoke:

http://www.videokarma.org/attachment.php?attachmentid=174926&d=1339686885

http://www.videokarma.org/attachment.php?attachmentid=174927&d=1339686885

http://www.videokarma.org/attachment.php?attachmentid=174928&d=1339686885