Good Morning:
I just ran the TX gain calibration and it fails on 29 MHz at both the 5 and 50 watt power levels indicating an SWR of 2.1:1. I checked the SWR manually and indeed it is indicated at approximately 2:1 at 29 MHz. I manually checked all bands and 24.9 MHz is indicating an SWR of 1.6:1. On all of the other bands the SWR is 1:1 with the tuner in bypass. I am using a load good up to 3 GHz. I have swept the load and the cable that I am using and the RL is better than -40 dB throughout the HF and VHF spectrum. It seems to me that all this points to the lowpass filter in the K3 for 12/10 meters. I can do a physical check for a bad cap or cold solder joint and it looks like I can sweep the filter by opening W3 and sweeping into a load connected to the antenna connector. Before I do this I wanted to confirm if anyone else has seen this problem and if so, what was the root cause? Thanks in advance for your assistance. 73 Gregg W6IZT ______________________________________________________________ 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
