According to the ARRL test report the 5000A takes 25ms for RX-TX and 29ms for TX-RX....most any open frame relay in an amp would switch before the 5000A outputs power, I would not think TX delay would be necessary, but would worry about the "break" time...your open frame relay most probably would drop out before the 29ms it takes the 5000A to quit output. A 100ms is bovine scatology...............
Mike K4EAR -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry W8ER Sent: Saturday, October 04, 2008 1:27 PM To: Lee A Crocker; Flex Reflector Subject: Re: [Flexradio] Problem with 5K and Henry Classic Lee et all, First, thanks to all for the input. A piece of gear, that is well built, hardly assumes blame because of it's age! However, if you read my post you should see that I am suspecting just that, the Henry input circuit, not the Flex. The switching relays, in the Henry, may be too slow to switch the amp input circuit before power is up on the 5K. A setting in the Flex software allows you to hold off RF for the specified time thus allowing any amp to fully switch. The default is 100 ms. Since a frame type relay, used in many of the old amps, should switch in 20 to 40 ms, the default should be sufficient. BUT .. in this case something killed the 5K. I do not in any way suspect the Flex but I am looking for ideas. My personal suspicion leads me to think that the relay itself may be defective, instead of just slow. My post was an effort to find out if anyone else has experienced this same problem because there should be a heck of a lot of these old style amps, with open frame relays, out there tied to Flex SDR-5000A's. The kicker is that my Kenwood TS-870 isn't having any problem with it! I hope that explains my thinking a little better. -- Larry W8ER Lee A Crocker wrote: > I'd be worrying about either the input circuit or the relay in the Henry. Why would you put a "new" 30 year old piece of gear in line and when an already stable link in the chain breaks, presume that link is the culprit? I would be very suspect of that amp. > > 73 W9OY > > > > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kb.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > > > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ No virus found in this incoming message. Checked by AVG. Version: 7.5.526 / Virus Database: 270.7.5/1702 - Release Date: 10/1/2008 9:05 AM No virus found in this outgoing message. Checked by AVG. Version: 7.5.526 / Virus Database: 270.7.5/1702 - Release Date: 10/1/2008 9:05 AM _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
