On 5/30/2012 6:39 PM, Rick Bates wrote: > I answered Adrian off list. Good response, Rick. I have two K3s and P3s for SO2R, so I can use one P3 to watch the RF output of the other radio. Transmitting AFSK RTTY or JT65 with about 30W out of the K3 driving the KPA500 to full power, IMD is at least -45dBC (that is, 45 dB below the carrier).
I don't know enough about how PSK and FSK are generated within the K3 to be able to comment on what mechanisms or adjustments within the K3 might be generating IMD. As has been noted, it is well known that K3 IMD does rise when the power supply sags, but I haven't seen data on how much sag it takes for various levels of IMD. So yes, short beefy copper on DC power leads is a VERY good thing. 73, Jim K9YC ______________________________________________________________ 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
