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Scott Sherer
开云体育Hi Fred, My environment includes a Yaesu FTDX-101MP that I use with FT8 (the only mode I do).? I have an HF-Auto tuner and a 43ft vertical with dozens of radials.? I drive the amp with from 9 to 16 watts to get out about 330 watts.? I never go above that as my amp tends to go into bypass mode.? 330 watts is enough to do the world and I’m not complaining.? Going into bypass mode only happens on 10 and 12 meters.? Why? I don’t know.? It doesn’t happen on any other band.? My old Ameritron ALS1300X didn’t do that in the 8 years that I owned it.? It was an excellent, reliable amp but big and bulky (two boxes, not one) and service from MFJ was terrible.? The worst possible service imaginable.? So I sold it and got the la1k at the recommendation of the sales manager at HRO.? I’ve had it two years and it has needed service twice.? Once for an upgrade and once because I drove it too hard.? Each time Palstar had it back in around a week.? Excellent service, none better.? So why does it go into bypass mode on 10 and 12? No idea, I’m using the same antenna and tuner.? At 300 watts it doesn’t happen very often.? All in all, I’m very happy with it.? I do have the band cable on the amp and that seems to help.? I’m also using 220 volts.? Regarding temp: I always have my eye on the temp and when it reaches 64C I give it a break.? At 50C my fans kick in automatically and really work.? I’m on a very long time before the temp rises.? I hope this helps. Scott KC9WPS ? From: [email protected] [mailto:[email protected]] On Behalf Of Fred, W9KEY ? Scott - Don't recall ever meeting you, but we are not far apart. |
