Folks, I was a bit confused by some the rhetoric here recently about the JUMA PA100. Some of it based on supposition. I asked my JUMA friends for some information and they provided it. It is posted on their site. So now you can make informed decisions. Here is the info and the link for further details on how it was determined. Please contact JUMA if you have questions.
http://www.nikkemedia.fi/juma-pa100/juma-pa100-imd-measurements.html JUMA PA100 IMD measurements OH2NLT / 16.08.2012 Measurement setup JUMA PA100D OH2NLT prototype. Generators 2 x HP8657B Dual tone signal combined with Mini Circuits ZX10-2-12-S+ combiner Dual tone signal amplified for PA100 drive with OH2NLT experimental 10W amplifier Attenuators Spinner 30dB + 10dB Control meter R&S NAUS4 Spectrum analyzer HP8594E Measurement results Note that delta marker figure seen at the pictures need to be corrected with +6dB to take account second carrier. Generators combined third-order IMD -60dBc Driver amp out @ 1.6W third-order IMD -45dBc JUMA PA100 @ 22W third-order IMD -41dBc JUMA PA100 @ 36W third-order IMD -40dBc JUMA PA100 @ 59W third-order IMD -38.5dBc JUMA PA100 @ 90W third-order IMD -37dBc ______________________________________________________________ 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
