I've been using a MFJ-998 for about four years - first with an ALS600 and now with the KPA500. The MFJ-998 works very well. It has an amp-disable feature that opens the amp-key line when SWR goes above a pre-set level, or when the tuner starts tuning. I modified my MFJ-998 so that it disables the KPA500 via AUX connector pin11, which is even faster than opening the amp-disable line. Info on the MFJ-998 mod is in the "Equipment Modifications" section of my website at www.ad5x.com. I also have a review of the MFJ-998 on my webiste.
I have my K3 set for 15 watts TUNE output, and I leave the MFJ-998 in the full-auto mode. So when I change bands or antennas I push TUNE on the K3. If the SWR is 2:1 or greater the MFJ-998 disables the amp and tunes, then re-enables the amp. As most of my normal frequencies are already stored in memory, the MFJ-998 usually clicks once and it is tuned. And, of course, if I forget to tune first or pick the wrong antenna, the MFJ-998 disables the KPA500 as soon as I transmit. I am looking forward to the KAT500 as I assume it will automatically pick a previous memorized tuning solution whne you change bands or frequencies on the K3 without having to transmit first. But in the interim, the MFJ-998 is a nice tuner. Phil - AD5X ______________________________________________________________ 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
