If it looks like a slightly larger version of an RCA plug then it's possibly a PL259 connector that was used on antenna cables. Older versions of the plug have the rounded part looking like the ribs of an umbrella.
If it is a PL259 connector then you will probably need someone who is handy with a soldering iron to attach the new connector. Bob Nelson -----Original Message----- From: Pc-audio [mailto:pc-audio-boun...@pc-audio.org] On Behalf Of Dane Trethowan Sent: Thursday, 12 June 2014 2:08 PM To: PC Audio Discussion List Subject: Connecting External FM Antenna To Tuner Hi! I have a Yamaha TX-950 tuner here, its a lovely piece of equipment particularly its FM band with its 3 modes of band width and dual Antenna mode - you can switch between antennas depending on what you're listening to - some stations may come in better with an alternate FM antenna pointing in a different direction - - so that's all well and good if you can connect the antennas to the tuner itself. This tuner has antenna connecters that look like oversized RCA sockets as opposed to the standard F Connector or TV antenna type connectors, I know the adapters are around to convert one type to another, mine broke, I need to get another so does anyone know the name of the connector type I've described on the back of my tuner so I know what to order from my local electronics store? Thanks! ********** Dane Trethowan Skype: grtdane12 Phone US (213) 438-9741 Phone U.K. 01245 79 0598 Phone Australia (03) 9005 8589 Mobile: +61400494862 faceTime +61400494862 Fax +61397437954 Twitter: @grtdane