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563calibrate [2007/04/11 22:19] n5na created |
563calibrate [2012/02/09 23:49] (current) n1eu |
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| ====== Using WWV to Calibrate an Omni VI ====== | ====== Using WWV to Calibrate an Omni VI ====== | ||
| + | //(note: before performing frequency calibration, you need to make sure the BFO oscillators are correctly aligned/calibrated per the procedure in the manual; also, be prepared for the real possibility that C31 has aged and needs replacement - N1EU)// | ||
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| **From the Ten-Tec Reflector August 17, 2003** | **From the Ten-Tec Reflector August 17, 2003** | ||
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| -Button your rig back up, and there you are. | -Button your rig back up, and there you are. | ||
| - | A good check on your BFO trimmer cap settings is to have the VFO set to 10 | + | A good check on your BFO trimmer cap settings is to have the VFO set to 10 Mhz and then switch back and forth between USB and LSB. There should be no change in the tone you are receiving from WWV. If there is, then your BFO board needs calibrating, and you will need a frequency counter or accurate separate rig. |
| - | Mhz and then switch back and forth between USB and LSB. There should be no | + | |
| - | change in the tone you are receiving from WWV. If there is, then your BFO | + | |
| - | board needs calibrating, and you will need a frequency counter or accurate | + | |
| - | separate rig. | + | |
| - | + | ||
| - | + | ||
| - | *************** | + | |
| - | (i) Why do I use the sidetone? Because it is an easily-verified signal | + | ---- |
| - | (using MixW/DigiPan), doesn't depend on the calibration of the rig's master | + | |
| - | frequency reference, and give an easy way to ensure you are exactly on | + | |
| - | frequency with WWV. | + | |
| - | *************** | + | *Why do I use the sidetone? Because it is an easily-verified signal (using MixW/DigiPan), doesn't depend on the calibration of the rig's master frequency reference, and give an easy way to ensure you are exactly on frequency with WWV. |
| - | I'm open to any suggestions for corrections and/or improvements on this | + | ---- |
| - | method. | + | |
| - | - jgc | + | I'm open to any suggestions for corrections and/or improvements on this method. |
| John Clifford KD7KGX | John Clifford KD7KGX | ||
