EMRFD Message Archive 13710
Message Date From Subject 13710 2017-03-14 21:13:04 RodWall1234@Gmail... Re: [emrfd] headphones Hi all.I remember having one ex army head phone. It had a rocking amateur inside. Think you just connect another head phone of the same type to it via a long wire. It didn't need a power supply. Think they were used to communicate between a gunner on a war ship and the bridge. On my crystal set with a one transistor amplifier it was loud. Almost like a speaker.Roderick Wall, vk3yc.----- Reply message -----