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Author Message   Admin Posted on Sunday, May 25, 2003 - 12:37 pm:        KLV550 by Tech671 Specifications   GENERAL Power output meter On Air meter 110v AC (2)SD1407 Power transistors Frequency Range 26-30 Mhz 26 db Gain Preamp Built in 3 amp 13.5 volt Power Supply On/Off Switch AM/SSB Switch Preamp On/Off Switch Standby Switch Mode AM/FM/SSB/CW Fuse 4A Review The KLV550 was tested with a Galaxy 949 and the 949's output was a modest 16w peak. For any of you interested I spent a little time with the KLV 550. I was impressed with the output of the pair of Thompson SD1407 28v transistors. These are rated at 100w avg power with 2.5w of avg drive ea. It should easily achieve 200+ from a Bird 43 and 400-600 on the Bird 43p depending on peak drive. Output Levels using 6 Position Switch Position   Input   Deadkey   PEP 1 2.5w 20w 100w 2 2.5w 30w 150w 3 2.5w 40w 200w 4 2.5w 50w 250w 5 2.5w 70w 325w 6 2.5w 110w 425w Of course with a radio of higher peaks your peak output will increase. The neat thing is the built in power meter is pretty accurate. Audio checks were "loud and clear". SSB worked just as well as AM with "loud and clear" checks as well, ssb delay was just right. The pre-amp works very well and the adjustability is a dream. You know sometimes you need just a little more gain, not to be blasted away by the pre-amp. This allows you to do just that. Adjust just the amount of pre-amp gain you need to hear what you're after without dragging in all the trash with it. The two cooling fans are on the bottom so make sure the amp sits in a cool place and a hard surface. Periodically check and clean the fan grilles. All in all another great product from RM Italy available to you from Copper Electronics. Enjoy! -Tech671