KPA-1500 features
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I'd like to see the KPA-1500 use dual 1kw LDMOS transistors as they are relatively inexpensive and can handle high reflected power. An antenna tuner shouldn't be needed unless the SWR exceeds 3 to 1. I'd like the KPA-1500 designed for 2kw so it will easily make 1,500 watts in "run" mode all weekend long on all modes, including RTTY. Too many of today's "legal power amps" often won't make legal power. A quiet Amp is important, use 4" or larger cooling fans and not tiny 2" fans like many solid-state amps use as they often need to run at warp speed and then make a tremendous amount of noise. I'd like two radio inputs and six antenna outputs, and to be able to adjust the brightness of all front panel light from bright to very dim. The KAT-500 front panel lights cannot be turned down low enough for me. The KPA-500 is small and excellent for DXpeditions, build the KPA-1500 as a robust legal limit amp with large heat sinks that will run cool, operate quietly, and easily make 1,500 watts on all bands 160-6m and I'll be sure to buy one. 73, Dick- K9OM ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Yes... to everything Dick said.
______________________ Clay Autery, KY5G On 3/20/2017 11:49 AM, Dick via Elecraft wrote: > > I'd like to see the KPA-1500 use dual 1kw LDMOS transistors as they are > relatively inexpensive and can handle high reflected power. An antenna tuner > shouldn't be needed unless the SWR exceeds 3 to 1. I'd like the KPA-1500 > designed for 2kw so it will easily make 1,500 watts in "run" mode all > weekend long on all modes, including RTTY. Too many of today's "legal power > amps" often won't make legal power. A quiet Amp is important, use 4" or > larger cooling fans and not tiny 2" fans like many solid-state amps use as > they often need to run at warp speed and then make a tremendous amount of > noise. I'd like two radio inputs and six antenna outputs, and to be able to > adjust the brightness of all front panel light from bright to very dim. The > KAT-500 front panel lights cannot be turned down low enough for me. The > KPA-500 is small and excellent for DXpeditions, build the KPA-1500 as a > robust legal limit amp with large heat sinks that will run cool, operate > quietly, and easily make 1,500 watts on all bands 160-6m and I'll be sure to buy > one. > > 73, > Dick- K9OM ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Elecraft mailing list
How about a pair of 3CX3000A7's with auto tune, in the K3 form factor?
:-) Sent from my iPhone > > I'd like to see the KPA-1500 use dual 1kw LDMOS transistors ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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GlowFETs?
On 3/20/2017 12:54 PM, Grant Youngman wrote: > How about a pair of 3CX3000A7's with auto tune, in the K3 form factor? > > :-) > > Sent from my iPhone > >> >> I'd like to see the KPA-1500 use dual 1kw LDMOS transistors > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Clay Autery
Is Elecraft seriously considering a KPA-1500 or KPA-2K?
On 3/20/2017 12:53 PM, Clay Autery wrote: > Yes... to everything Dick said. > > ______________________ > Clay Autery, KY5G > > On 3/20/2017 11:49 AM, Dick via Elecraft wrote: >> >> I'd like to see the KPA-1500 use dual 1kw LDMOS transistors as they are >> relatively inexpensive and can handle high reflected power. An antenna tuner >> shouldn't be needed unless the SWR exceeds 3 to 1. I'd like the KPA-1500 >> designed for 2kw so it will easily make 1,500 watts in "run" mode all >> weekend long on all modes, including RTTY. Too many of today's "legal power >> amps" often won't make legal power. A quiet Amp is important, use 4" or >> larger cooling fans and not tiny 2" fans like many solid-state amps use as >> they often need to run at warp speed and then make a tremendous amount of >> noise. I'd like two radio inputs and six antenna outputs, and to be able to >> adjust the brightness of all front panel light from bright to very dim. The >> KAT-500 front panel lights cannot be turned down low enough for me. The >> KPA-500 is small and excellent for DXpeditions, build the KPA-1500 as a >> robust legal limit amp with large heat sinks that will run cool, operate >> quietly, and easily make 1,500 watts on all bands 160-6m and I'll be sure to buy >> one. >> >> 73, >> Dick- K9OM > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Eric asked for input on features/characteristics/specifications desired
"if" Elecraft were to embark on such a project. He's gotten a lot of input. There were a couple of prototypes knocking around at selected hamfests several years ago. Nothing came of them. There's obviously no technical/engineering reason that would prevent Elecraft from fielding something of this nature on the market. The real issue is ... would it be profitable. Sadly, the math to answer that question is far more complex than designing it. [:-) 73, Fred ("Skip") K6DGW Sparks NV USA Washoe County DM09dn On 3/23/2017 4:31 PM, W0MU Mike Fatchett wrote: > Is Elecraft seriously considering a KPA-1500 or KPA-2K? > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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