Pretty sure the chatroom thread he started concerns a Dentron GLA1000 that won't key. Unless this amplifier has been modified, you need either a foot switch plugged into the socket marked "relay" on the back panel, or a radio that has a linear-keying relay inside it. The GLA is a ham linear, and ham radios usually come with a switching output to activate an external amplifier. A patch cord from the radio's keying output jack to the linear's relay jack does this job. Alternately, a footswitch plugged into that jack will do the same thing. Another possibility is to modify the amplifier by building in a circuit that senses the radio's carrier and activates the relay that way. Since a CB isn't legal to use with an amplifier, that feature won't be found on a CB, or even the (wink) "10-meter" radios. One remedy is to modify the radio by adding that relay and jack to the radio.
One way to do that is here:
https://www.ebay.com/itm/1171349415...pid=5336136228&customid=&toolid=10001&mkevt=1
Another way is to build that "carrier sense" circuit into the amplifier, like a normal CB linear already has in it.
https://www.ebay.com/itm/1169301908...pid=5336136228&customid=&toolid=10001&mkevt=1
That's probably enough shameless plugs for stuff I sell. But those are the choices. A foot switch, a radio with an amplifier-keying relay, or a retrofit to make a ham linear into a CB linear.
Unless somebody already modified it.
73
One way to do that is here:
https://www.ebay.com/itm/1171349415...pid=5336136228&customid=&toolid=10001&mkevt=1
Another way is to build that "carrier sense" circuit into the amplifier, like a normal CB linear already has in it.
https://www.ebay.com/itm/1169301908...pid=5336136228&customid=&toolid=10001&mkevt=1
That's probably enough shameless plugs for stuff I sell. But those are the choices. A foot switch, a radio with an amplifier-keying relay, or a retrofit to make a ham linear into a CB linear.
Unless somebody already modified it.
73
