One more question: Assuming that the 2 tones are about 2:3 in amplitude ratio, can anyone say how that would be expected to affect the 3rd order IMD figures?
From: Erik Basilier [mailto:[email protected]] Sent: Sunday, June 12, 2016 2:53 PM To: '[email protected]' <[email protected]> Subject: KX3 IMD vs DC input, using built-in 2 TONE I am testing my KX3 / KXPA100 combo, looking at TX IMD and power output depending on the DC power supply characteristics. I am experimenting with a N8XJK Boost Regulator (40A max) as well as an Astron linear supply adjusted down to low voltage, simulating a run-down battery. To judge IMD I use the built-in 2 TONE, mix down sampled output to audio, and feed into Spectrum Lab. When I look at the envelope, its smallest amplitude is about 1/3 of peak. This suggests that the 2 tones are not of equal amplitude. Has anyone else seen this? I downloaded the laterst firmware about a week ago. Thanks, Erik K7TV ______________________________________________________________ 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 Message delivered to [email protected]
