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N8KDV wrote:
Tom Holden wrote: Anybody confirm that this station is high by about 0.2 to 0.3 kHz? What an odd freq. Wonder why it's not on a 5kHz multiple. Gets clobbered by 7510. Using DX-394 and G5RV. Tom Seems to be on freq. here (7507). Steve Holland, MI Drake R7, R8 and R8B http://www.iserv.net/~n8kdv/dxpage.htm Just wondered. Two DX-394's read the same 7507.2 kHz. I had aligned both using a 25kHz harmonic marker generator from my Drake R4B and with an audio spectrum analyser on my pc, to what I thought was an accuracy of +/-100 Hz. But WWV also shows zero beat on USB at 5000.1 kHz on one and 5000.0 kHz on the other so maybe there has been some drift. Finding an accurate frequency at something other than a multiple of 5kHz tests the accuracy of the 2nd local oscillator which tunes only over the same 5kHz range. This AFRTS USB transmitter drew my attention when I could hear it chattering next to a strong DSBAM station on 7510. I'll trust your Drakes to be more accurate than my DX-394's! Tom |
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