As an example of how we feel about ALC with the K3 and KPA500, neither of my custom-made AUX-IO cables has the ALC pin (pin 15) connected. It is just not needed. If the KPA500 needs to protect itself, it will.
73! Jack, W6FB > On Mar 9, 2019, at 10:23 AM, Bob McGraw K4TAX <[email protected]> wrote: > > I would emphasize with the K3S and KPA500, if one follows the set-up EXACTLY > as described in the KPA500 manual page 16 & 17, and in the K3S manual page 29 > & 59, all will be well with the EXT ALC engaged. Anything else will be a > PICNIC problem. > > I suggest the set-up be done with a 50 ohm resistive dummy load connected to > the amplifier. Therefore any major deviation in output load will then > provide a margin of safety via the ALC. Correctly set-up one can then observe > any excessive drive applied to the amplifier or a load which exceeds the > recommended load range by an indication on the transceiver ALC indicator. > This ONLY applies to the K3S and KPA500 as described. > > 73 > > Bob, K4TAX > > > > ______________________________________________________________ > 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 ______________________________________________________________ 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
