What is the AV Connector type for AV Input on Lightbridge 2 ??

[timmydjr]

I have spent a lot of time looking for the type of connector that plugs into the AV Input on the Lightbridge 2. It is NOT in the manual. Can anyone tell me what type of female connector is needed to plug into the AV Input (#2 in LB2 manual page 10). Thanks for your help.