One thing that someone pointed off off list..... By having the amplifier and power supply on one board, if the power supply fails catastrophically, you have a lot of very expensive RF components attached to a burned up PCB. Separate PCBs would be a good idea.
On 7/24/2011 10:10 AM, Olli Tuppurainen wrote: > I have not seen any cost indications yet > > Olli > OH6CT > >> -----Alkuperäinen viesti----- >> Lähettäjä: [email protected] [mailto:elecraft- >> [email protected]] Puolesta Gary K9GS >> Lähetetty: 24. heinäkuuta 2011 17:48 >> Vastaanottaja: [email protected] >> Aihe: Re: [Elecraft] Could the be the basis for the KPA-1500? >> >> Hello Olli, >> >> It's a start but really needs two devices. >> >> Any idea what the cost is? >> >> >> >> On 7/24/2011 8:07 AM, Olli Tuppurainen wrote: >>> Here is one alternative for HF + 6m >>> >>> http://www.nikkemedia.fi/juma-pa1000/ >>> >>> >>> Olli >>> OH6CT >>> >>>> -----Alkuperäinen viesti----- >>>> Lähettäjä: [email protected] [mailto:elecraft- >>>> [email protected]] Puolesta Jack Chomley >>>> Lähetetty: 24. heinäkuuta 2011 6:44 >>>> Vastaanottaja: [email protected] >>>> Kopio: [email protected] >>>> Aihe: Re: [Elecraft] Could the be the basis for the KPA-1500? >>>> >>>> We do NOT need any more big amplifiers, they are the reason the >>>> sunspot cycles have been worn out :-) >>>> >>>> 73, Jack VK4JRC >>>> >>>> On Sun, Jul 24, 2011 at 1:28 PM, Gary K9GS<[email protected]> wrote: >>>> >>>>> There has been an ongoing discussion on the AMPS reflector regarding >>>>> the Freescale LDMOS devices currently on the market. A pair of >>>>> these in an HF amp with a 48V SMPS would be an excellent > start.....(hint, >>>>> hint...KPA-1500). I wish I was retired and had some time on my > hands >>> :) >>>>> Check this out: >>>>> >>>>> http://www.w6pql.com/1_kw_2m_ldmos_amplifier.htm >>>>> >>>>> Also see: >>>>> >>>>> Some YouTube videos... >>>>> http://www.youtube.com/watch?v=02v58cnb41o&feature=relmfu >>>>> http://www.youtube.com/watch?v=-EACUpIhpac >>>>> >>>>> F1JRD also has an article in Dubus >>>>> http://www.qsl.net/f1jrd/MRFE6VP61K25H.html >>>>> http://www.w6pql.com/1_kw_2m_ldmos_amplifier.htm >>>>> >>>>> >>>>> -- >>>>> >>>>> >>>>> 73, >>>>> >>>>> Gary K9GS >>>>> >>>>> Check out K9NS on the web: http://www.k9ns.com Greater Milwaukee >> DX >>>>> Association: http://www.gmdxa.org Society of Midwest Contesters: >>>>> http://www.w9smc.com >>>>> >>>>> >>>>> >> __________________________________________________________ >>>> ____ >>>> 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 >>> >> -- >> >> >> 73, >> >> Gary K9GS >> >> Check out K9NS on the web: http://www.k9ns.com Greater Milwaukee DX >> Association: http://www.gmdxa.org Society of Midwest Contesters: >> http://www.w9smc.com >> >> ************************************************ >> >> __________________________________________________________ >> ____ >> 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 > -- 73, Gary K9GS Check out K9NS on the web: http://www.k9ns.com Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.com ************************************************ ______________________________________________________________ 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
