Chances are pretty good that the Flex is not presenting a low enough resistance in the "on" state to satisfy the Alpha. Regardless of the amplifier keying requirements, I really recommend the use of an external amplifier keying interface, such as the excellent AmpKeyer. (http://www.theheathkitshop.com/_ampkeyer.html ). It is very cheap insurance against damaging something inside your Flex (or Icom or Yaesu or..). I have one and use it to key my old Henry 2K. The AmpKeyer has both a relay contact output and a Mosfet output, and it even provides a very convenient standby switch to control the amp with.
Usual disclaimers apply. Just a very satisfied customer (both of the Ampkeyer and the Flex 5000) 73, Army Curtis - AE5P Nacogdoches, the oldest town in Texas -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave&Nancy Ridge Sent: Thursday, November 29, 2007 12:00 PM To: [email protected] Subject: [Flexradio] Keying Alpha Amp I have a friend with a Alpha 8100 amplifier. He is trying to get the SDR5000 to key the amp "on" using the "Switch Relay with TR" checked on "TX1". He has the amp plugged into "(Red)". It does not key the amp. We can key the amp with a meter with 10 milliamps draw. (voltage at this switch point is 12 volts) The SDR5000, when measured with an Ohm meter at the "Red" RCA jack, changes state (on X10 scale) when the SDR MOX is keyed. ("TX1" checked) Ideas? Thanks, Dave , W9DR -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20 071129/e749e082/attachment.html _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/ No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.16.9/1158 - Release Date: 11/28/2007 9:11 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.16.9/1158 - Release Date: 11/28/2007 9:11 PM _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
