Greetings, I am attempting to help a ham friend with his KX3 (s/n 631) which has a low receive issue.
He says that the receiver became almost deaf after upgrading the firmware to the latest issue. I noticed that the radio had been dropped and the BNC connector is not square with the case. My friend says the low receive issue popped up a long time after the radio was dropped. I opened up the case and checked the BNC center pin to the ANT connector on the ATU and it looks and measures OK at 0 ohms. This KX3's options are: ATU and Roofing Filters. I applied my old XG-1 generator (7.040 MHz), 50 uV position to the ANT jack and the S-meter reads appx S2 w/ PRE Amp ON. With PRE Amp set to OFF, I can barely hear the tone. The KX3 is set to CW mode and I use the CWT to tune it in. This test was performed with the ANT tuner in the bypass mode. I verified the level of the XG-1 by applying it to my Icom transceiver which reads S-9. My own KX3 reads ~ S-8 with PRE Amp OFF. I rolled the software back to ver 1.61 / 1.23. I get the same poor receive results. I saved the radios Configuration, performed EEINIT parameter Initialization, then restored the config to the radio. No Joy- still low receive. I removed the Antenna Tuner and plugged the BNC jumper into the main board with no receive improvement. The KX3 seems to transmit well. I can transmit more than 10 watts into my OHR WM2 (terminated with dummy load). I have only tested the low receive issue on 7 MHz CW, but my friend says it is deaf on all bands. Maybe I missed a menu option to check. Any advice? Please. Thanks and regards, Rich KR7W ______________________________________________________________ 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
