No, that's not "normal", Samuel. You can get frequencies within 20 or 30 Hz on your K2. For example, my K2 indicates 10.000.01 right now for WWV at 10 MHz. That's an error or 10 Hz.
Two things can cause the error: operating procedure and the calibration of the 4MHz master oscillator in the K2. The K2 calibrates the dial readout using the 4 MHz master oscillator on the control board as the reference for a built-in frequency counter. That's why the setup procedure for CAL PLL and CAL FIL requires connecting a probe to the PLL oscillator and BFO. The PLL oscillator frequency is measured when you run CAL PLL, and the BFO is measured when you do CAL FIL. There are a number of ways to set the 4 MHz "dead on" without any external test equipment. They can be found under the "builders resources" section of the Elecraft web site (www.elecraft.com). See "Notes on Adjusting C22 to put the K2 on Frequency" under Construction Notes. Once you have done that your frequency display should be within 20 or 30 Hz across all the bands. It does take proper operating procedure, however. The easiest was to be sure you have a station properly tuned in is to zero beat the carrier with sidetone in CW mode. An alternative, if you can hear subtle changes in musical pitch, is to tune in WWV and adjust the tuning for minimum change of the tone frequency as you switch from USB to LSB. Both of them should produce an frequency error of a few tens of Hz, not more. Ron AC7AC -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Samuel Ramac Sent: Friday, December 16, 2005 2:52 PM To: [email protected] Subject: [Elecraft] K2 Frequency Calibration Can anyone tell me if this is normal? I tried to calibrate C22 using W1AW and found the following W1Aw Freq 1.8175Mhz delta = 0.07 Khz 3.5815 delta = 0.13 Khz 7.0475 delta = 0.30 Khz 14.0475 delta = 0.61 Khz 18.0975 delta = 0.73 Khz Is the delta at higher frequency higher normal? I have a K2 S#: 1866. with 2.04P firmware.. - - - - - - - - - - - - - - - - - - - - - - - - Samuel C. Ramac [EMAIL PROTECTED] _______________________________________________ Elecraft mailing list Post to: [email protected] 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
