[Elecraft] 4 Mhz oscillator

Mike McCoy [email protected]
Sun Dec 29 10:01:00 2002


Yes... After an hour warmup I initially used a HP freq counter to set the
oscillator directly to *exactly* 4 Mhz (measuring right off left side of
C22) and after PLL found the display to be off. I then used the recommended
method of matching the display to the freq counter and it is still off. I'm
99.44% positive my freq counter is in calibration so I don't know what the
problem is.

As soon as I can hear WWV on 20Mhz I'm going to try the zero beat method.

73,
Mike K5PU

>
> -Always noticed that my display reading of stations being received
> seemed 50 Hz high.  I figured that the 4Mhz oscillator needed a tweak.
> I originally aligned it by the frequency counter technique described in
> the K2 manual, page 57.  Upon checking it I found it to be right on and
> hadn't changed since I originally did it. So just for kicks I checked the
> 4 Mhz oscillator and found it sitting at 3.85 Mhz. That seems to explain I
> think my high display reading.  Problem I see is if I used a counter and
> did it by the book, how come the low 4Mhz reading?  Anyone used a counter
> and have this problem?