Hi Jim, Both the KX2 and W1 need to be calibrated to a standard. The W1 manual 4.5V is a rough calibration. As I remember, KX2's are calibrated at the factory at some (I've forgotten) power level. Both the KX2 and W1 are somewhat non linear.
For my shack, I've decided that a DL1, along with an accurate 10M Ohm Fluke DVM is the standard. No adjustment required and is as accurate as the 1% load resistors, DL1 diode drop voltage, and DVM accuracy. John KN5L On 9/30/20 1:46 PM, James Bennett via Elecraft wrote: > Wondering if anyone can help on this - I’ve got a KX2 and W1 Power Meter. The > power out on the KX2 does not match what the W1 is reporting. I have the W1 > connected to my MacBook Pro displaying the serial data being sent to it. > > I just verified that the W1 voltage at the TP1 connector is exactly 4.5 > volts, per the manual. I ran the KX2 Manual Transmit Gain Calibration. The > KX2 is showing exactly 6.0 watts into a dummy load, going through the W1. The > serial data reported by the W1 is 7.20 watts, consistently. Also, the KX2 > firmware is the most recent. > > So, who is wrong - KX2 or W1? And what can I do to resolve it? ______________________________________________________________ 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]
