SIOCEN Replacement 3.5mm Male Jack to Bare Wire Open End TS 2 Pole Mono 1/8" 3.5mm Jack Plug Connector AUX Audio Cable for Scanner,Speaker PA Horns,Morse Key, Cooling Fans, Power amp Repair

Knowing the length of the wire and whether it is deployed indoors or outdoors is important. Also, a single wire antenna should be plugged into the 3.5 mm external antenna jack, not the headphone jack. The plug tip should be connected to the antenna wire. Did you receive a User Manual for this radio and have you read it? Properly installed a single wire shortwave antenna should run outdoors and longer lengths over 23 ft. or 7 meters will offer better shortwave reception than shorter lengths. Trying to listen to a shortwave radio indoors is the pits. Too much RFI (radio frequency interference) from home appliances. Likewise, listening to shortwave in an urban area is pretty poor and for the same reason. Take the radio away from buildings or out into the country will be a big surprise for you. Useful: https://en.wikipedia.org/wiki/Shortwave_bands and Learn how to use UTC time: https://www.timeanddate.com/worldclock/timezone/utc and https://short-wave.info/ read the instructions It's easy to use a wire antenna with a just a 3.5mm plug. Forget the little SMA stuff. https://www.amazon.com/CERRXIAN-Terminal-Headphone-Converter-Adapter/dp/B06Y5YJRPD?xpid=DjIuFrhS3ru0p or: https://www.amazon.com/SIOCEN-Replacement-Connector-Scanner-Speaker/dp/B0BVPTFJN5/138-3649441-8685015