The noise your hearing is caused by the frequency synthesizer, PLL trying to acheave lock. When you turn the tuning dial, the PLL circuit switches to the new frequency. The transients caused buy the frequency change creates a small frequency jitter that increases the noise floor.
A lock/unlock signal from the PLL circuit can be used to mute the audio during the tuning steps but muting process can also create noise. The K3's receiver noise floor is so low on 6 meters that the tuning transients are well pronounced. Jack WA9FVP Willco Electronics. ----- Jack WA9FVP Sent from my TRS-80 :-) -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-VFO-Tuning-Noise-tp7603999p7604012.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
