Jerry, I have two QRO amplifiers (ALPHA-77 SX & Henry 4K-Ultra). Both are capable of going beyond the legal limit and both have ALC provisions. However, I don't use them. I limit my power with the SDR-1000. The power out of the SDR-1000 doesn't overshoot like many or the other transceivers do when one tries to limit output.. I also have a home brew 4-1000 that I drive with full power from the SDR-1000 to get about 1,200 watts out... no ALC. I had a FL-7000 and never used ALC. I think you can safely operate the Quadra without ALC. Bob K8MLM HAPPY Flex Radio user In a message dated 8/16/2006 10:24:45 A.M. Eastern Daylight Time, [EMAIL PROTECTED] writes:
Jerry, Unfortunately, there is not a hardware ALC input on the SDR-1000. We do have quite a few people using amplifiers with our rig though. Maybe others could pipe up and tell you how they have their ALC setup (assuming their amps have that option). Eric Wachsmann FlexRadio Systems > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > radio.biz] On Behalf Of Jerry Flanders > Sent: Wednesday, August 16, 2006 8:31 AM > To: [email protected] > Subject: [Flexradio] ALC for use with QRO external amp? > > I am considering using an SDR1000 as driver for my Quadra amp. > > In looking over the SDR1000 docs, I can't find a way to hook up my > Quadra's ALC control line to the SDR1000. > > My present setup uses a 756PRO, which provides an ALC input jack so > that an external amp can make the 756PRO cut the drive in case of a > disaster in the antenna, etc, which might otherwise let the smoke out > of the amp. > > I see ALC referred to in the SDR1000 docs, but apparently only as an > internal control signal. As far as I can see, that ALC is not used > with a QRO external amp. Is there any provision for external ALC control?? > > Jerry W4UK _______________________________________________ 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 Homepage: http://www.flex-radio.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/flexradio_flex-radio.biz/attachments/20060816/ac01c87b/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 Homepage: http://www.flex-radio.com
