Since I sometimes bring my station to the Caribbean, one of the main reasons that I switched to the Elecraft line was for the size and weight. I have a KPA500 and an it is an awesome amplifier but I would like a little more power at times. I considered the Expert 1.3k that many with similar needs use but I have not swapped my Elecraft due to the reasons that W4TV mentioned below. It may not be practical for Elecraft to manufacture a small lightweight KPA1500 at an affordable price however perhaps a KPA750 or KPA1000 could be. I would certainly be interested in one of these. I read many posts on this list saying that 3 or 4dBs make almost no difference. I did a quick search of my last 200,000+ QSOs and could not find any of the stations making this claim in my logs so I wonder how active they are on HF.
John KK9A From: Joe Subich W4TV The Expert 1.3K also violates the 15 dB gain limitation rule and is a real garbage generator. Expert's own test data in their application for FCC approval showed IMD at -27 dB at 800 W! For your 1 KW, each of the IMD products are probably around .5W and I'd hate to even think about the IMD level at 1.3 KW! 73, ... Joe, W4TV On 12/30/2016 11:07 PM, Ignacy wrote: > With a little work, KPA500 can be a KW amp while losing weight. This is by > using LDMOS and a commercial PS. But then KAT500 would have to be beefed up > to KAT1000. > > I have Expert 1.3k that I use with KX3 for > 1 KW. The Expert is 21 lbs > (lighter than Elecraft) with a 3:1 tuner + 4 antenna switch and automatic > 110/220V switching; KPA500/KAT500 would be 35 lbs + cables. Also without > dealers markup, the no-ATU version is not that much expensive than KPA500. > But the Expert needs Elecraft refinement. > > One KW is great when working portable as DX. Everybody responds even with > impromptu antennas. > > Ignacy, NO9E ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com