Per the K3 manual page 17 the K3 can key +200VDC @ 5A. No need to have a key line buffer if the amp keying voltage and current meet those specs.
73, Mark, WB9CIF -----Original Message----- From: [email protected] <[email protected]> On Behalf Of James F. Boehner, MD via Elecraft Sent: Wednesday, March 29, 2023 11:55 To: 'Josep Torres' <[email protected]>; 'Elecraft Reflector' <[email protected]> Subject: Re: [Elecraft] TL-922 Josep, Be sure to install a soft-key interface in the TL-922 before hooking it up to the K3. https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fharbachelectronics.com%2Fshop%2Fkenwood-tl-922%2Fsk-922-soft-key-keying-interface%2F&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=CtTlkUMq2f5c%2B0nckmeEK0YKKnhuYA1WQzNFfEbCFbo%3D&reserved=0 The newer rigs were not meant to handle the voltages on the older amplifier's keying circuits. I modified mine with the soft-key board and added the new capacitor block. '73 de JIM N2ZZ -----Original Message----- From: [email protected] <[email protected]> On Behalf Of Josep Torres via Elecraft Sent: Wednesday, March 29, 2023 3:03 AM To: Elecraft Reflector <[email protected]> Subject: [Elecraft] TL-922 Hi guys, Have a couple of Kenwood TL-922's around and was thinking to connect one to a K3. Has anybody done so.? And if so, how have you done the wiring.? Got 2 K3's (in fact I have 3 of 'em, but one not physically at now now) and maybe one day I can use the spare one with a TL-922 from another QTH. Thanks, 73, Josep EA6BF BUG #256 - CWops #3072 - FOC #2182 (ex 1724) ______________________________________________________________ Elecraft mailing list Home: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=TnNk0aWDZx2zqwqjCpM96FtptQ6s8wMoceSmXHx5Bcs%3D&reserved=0 Help: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=yLjqUd9p7z89NiPgSCwCJD7%2BWK8BGeslWucLMvtn65A%3D&reserved=0 Post: mailto:[email protected] This list hosted by: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=OsG5V37ZsiXO%2F5OgCeaQWjb4MJjFNzPAVsUdugzZ%2B84%3D&reserved=0 Please help support this email list: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=CkZvZcySDIL%2BsBzX0PkvYlKHUkuTRcAU5jBsBIsLZJI%3D&reserved=0 Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=TnNk0aWDZx2zqwqjCpM96FtptQ6s8wMoceSmXHx5Bcs%3D&reserved=0 Help: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=yLjqUd9p7z89NiPgSCwCJD7%2BWK8BGeslWucLMvtn65A%3D&reserved=0 Post: mailto:[email protected] This list hosted by: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=OsG5V37ZsiXO%2F5OgCeaQWjb4MJjFNzPAVsUdugzZ%2B84%3D&reserved=0 Please help support this email list: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=CkZvZcySDIL%2BsBzX0PkvYlKHUkuTRcAU5jBsBIsLZJI%3D&reserved=0 Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
