I am a very satisfied owner of both a K3 ( with a KPA 500 and KAT 500) and a KX3. I decided to order and build a PA-100D linear from JUMA Radio as a surface mount kit. It is a very compact linear which will produce up to 150 watts out with between 3 and 10 watts drive. It is well filtered and from tests I have done has a very clean output. Using my KX3 As a 2 tone generator I measured 2nd order distortion of better then -28 db. The JUMA engineers measured greater then -33 db with 90 watts out using calibrated lab equipment. With the new firmware it will work with the rs232 from the KX3 and other rigs so will select the proper output filter (switch bands) or you can use RF detect or manually select the band. It is crammed with safety interlocks and protection circuitry. If I want to run more power I use the output of the JUMA linear to drive my Heathkit SB 220. I have received excellent reports from many stations, many with K3/P3 and Flex Radios that could see my output. It does use a cooling fan on the heat sink but is very quiet. Running PSK31 using the linear with 30 watts out the fan never got to full speed.
This kit is 450 euros ($600.00 USD) so it's not cheap. Is it as good as the new Elecraft KXPA 100? Probably not and it doesn't cover 6 meters. But if you like a challenge and want a good linear to boot then check out WWW.JUMARADIO.COM. I have no relationship with JUMA but enjoy the linear. 73 Dave KD1NA Sent from my iPad On Jun 18, 2013, at 10:28 PM, [email protected] wrote: > Better check the writeup. It says that the amp will not work with the Flex or > KX3. > > 73, > Barry > K3NDM > > ----- Original Message ----- > From: "Rick McClelland, AA5S" <[email protected]> > To: "Richard Thorpe" <[email protected]> > Cc: "Elecraft Discussion List" <[email protected]> > Sent: Tuesday, June 18, 2013 2:37:20 PM > Subject: Re: [Elecraft] QRP > > Why spend more when you could spend less? > http://www.amazon.com/RM-Italy-KL-linear-amplifier/dp/B00CBRWIM8/ref=pd_sim_sbs_e_1 > > > > On Tue, Jun 18, 2013 at 12:27 PM, Richard Thorpe <[email protected]> wrote: > >> QRP is looking better, I looked at the out the door price of the Elecraft >> 100W amp with tuner. Ouch! around $1300.00 bucks with tax and shipping I >> was imagining around $600.00 I'm way out of step. Yikes! a hundred watt KX3 >> is close to the price of a 100 watt K3. >> >> K6CG >> ______________________________________________________________ >> 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 >> > > > > -- > Rick McClelland, AA5S > Fort Collins, CO > ______________________________________________________________ > 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
