If you are unlucky as me and live in the city you will have a high noise level. during the morning hours my noise level is S1 with the 2nd bar just blinking with the preamp in the K3 on. later in the day when everyone is home the noise goes to S3>S4 as the load on the power grid goes up.
I checked my K3 on a dummy load and I found only a few birdies internal to the K3 50.023 50.044 50.147.3 watching the birds on the P3 they move as I turn the VFO Interesting that I only hear the birds with the preamp in the K3 turned on or off. with the external ARR preamp on I don't hear them, but with my 5 el beam the noise is high enough that I only use the K3's preamp. I only notice the bird at 50.147, the rest are below the noise floor with the antenna on. the only way to check for internal birds in the K3 is to check it with a dummy load connected. you say that the birds are spaced 30 khz apart should tell you that some device external to the K3 is causing them. a beam is very helpful in nulling out the interference. it's best to check out your house 1st for the offending device, unplug everything one at a time and check to see if they are gone. Ed -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-on-50-MHz-noise-and-possible-harmonics-tp7604465p7604471.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:[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]
