Mostly everything works fine, but... 1) Still appears to be a problem with the AGC/S-meter calibration because the S-meter is continuously "pegged" on rightmost LED.
The RF Gain control appears to have no effect although I've confirmed that R4 (front panel RF Gain control) seems to function properly at the RF Board J6-6 connector. U12 pin 5 (voltage controlled by RF Gain control) reads: 3.192 Vdc. when RF Gain fully clockwise, and remains unchanged when RF Gain control is turned to fully counterclockwise. The AGC voltage is: 3.75. The S-meter calibration steps seemed to go fine with S LO and S HI adjustments. When the radio is first turned on various LEDs on the bargraph display are lit before settling on the rightmost LED. I have inspected the solder joints on the AGC/S-meter circuit components, and RP6 is correct. 2) The WWV 10 MHz station is received fine, but I'm not sure whether the PLL needs to be re-calibrated. The transmission seems zero-beat at 10.000.00 MHz cw mode, FL1 1.50, but is zero-beat on 10000.50 MHZ, USB, FL2 2.00. Do I need to re-calibrate the PLL per procedure on p. 101 (Frequency Calibration Techniques)? Thanks. Gary N0AGH _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
