The specs say the KX3 current draw is typically one to two amps when transmitting, so your 2.89 amp PS should do fine.
Dave, K9SW On Sep 18, 2012, at 3:53 PM, Bill Tubbs <[email protected]> wrote: > After sending my note about using the little MFJ power supply at 2.89 amps, I > realized that it works fine on my FT-817D at 5 watts but would obviously be > taxed at the full 12 watts of the KX3. So fuggetabowdit. > > Now I'M looking for a sufficient supply for the KX3 ;-) > > Bill > WK6A > > Sent from my iPhone > > On Sep 18, 2012, at 4:44 AM, Johnny <[email protected]> wrote: > >> Yes , correct , laptop supplies are often RF noisy. >> >> Sent from my iPhone 4 >> >> "Fred Townsend" <[email protected]> 於 2012年9月18日 下午2:04 寫道： >> >>> Jeff, caution. Laptop power external supplies are designed to be followed >>> by precision internal regulators that handle the logic voltages and charging >>> the battery. The external supplies are not well regulated and can be quite >>> noisy. They may not be the best supplies for ham rigs. >>> 73 >>> Fred, AE6QL >>> >>> -----Original Message----- >>> From: [email protected] >>> [mailto:[email protected]] On Behalf Of Jeff Herr >>> Sent: Monday, September 17, 2012 6:40 PM >>> To: 'Elecraft Reflector' >>> Subject: [Elecraft] laptop power supply to power KX3 >>> >>> While at work I went through our stock of power supplies for the various >>> makes of laptops we use. >>> I found that Toshiba supplies are specified 15v and ranged in current >>> capability from 2.5 amps and up. >>> >>> Dell, Lenovo, HP, Acer, Asus all use 19v supplies. >>> >>> Those Toshiba supplies are very small. >>> >>> WW6L >>> >>> >>> ______________________________________________________________ >>> 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 >> ______________________________________________________________ >> 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 ______________________________________________________________ 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
