[R-390] Adjusting a frequency standard

[Steve Hobensack]

Here is a nice easy and accurate method of adjusting your frequency standard 
crystal inside your modern transceiver. Tune an auxiliary receiver to WWV in 
the AM mode. Run the audio to the vertical input of an O'scope. Put your 
transceiver in sideband mode and tune the dial accurately to the same wwv 
signal. Go for dial accuracy, not zero beat. Run the audio to the horizontal 
input. Wait until the WWV signal has the typical AM tone modulation (440 or 
600 cycle). When your rig is near zero-beat, you will see a wobbling circle 
on the o'scope. Adjust your rig's frequency standard until the circle stops 
wobbling with the plane of the circle broadside to your eyes. Your rigs 
frequency is now set.

_________________________________________________________________
Help yourself to FREE treats served up daily at the Messenger Café. Stop by 
today! 
http://www.cafemessenger.com/info/info_sweetstuff2.html?ocid=TXT_TAGHM_OctHMtagline