Is there any technical merit behind FCC's 15dB amp gain limitation? I saw commercial RF amplifiers with gains up to 30dB, obviously approved by FCC. I could understand the limitation for tube amplifiers, the characteristics of some amp tubes would make high gain unstable. But for solid state amplifiers the limitation looks strange to say the least. Maybe it's time to ask FCC to reconsider this. Any ARRL lawyers out there? 73, Igor, N1YX
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Don Wilhelm Sent: Monday, December 20, 2010 3:31 PM To: [email protected] Cc: [email protected]; [email protected] Subject: Re: [Elecraft] 100 Watts or 500 Watts Bill, It is not an Elecraft choice. While you could do that as an individual, commercial products (sold in the US) must meet the FCC requirement of a 15 dB maximum gain That limits the maximum power gain to a factor of 31.62 - 10 watts in gives 316.2 watts (at the most) output. 73, Don W3FPR On 12/20/2010 3:23 PM, [email protected] wrote: > Why wouldn't Elecraft design the KPA500 to be driven to its rated output by a K3/10 ? > > Bill K3UJ > > > > > > > -----Original Message----- > From: Don Wilhelm<[email protected]> > Subject: Re: [Elecraft] 100 Watts or 500 Watts > > > Frank, > If you think you want 500 watts out, you will have to install the KPA3 > 100 watts) anyway. The K3/10 will not be able to drive the KPA500 to > ull output - you may be able to get somewhere betwen 200 and 300 watts > ut of it. > 73, > on W3FPR > > ______________________________________________________________ > 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
