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| To: | [email protected] |
|---|---|
| Subject: | Re: LF: Selection of spot frequencies for DX |
| From: | "James Moritz" <[email protected]> |
| Date: | Wed, 26 Mar 2003 11:25:59 +0000 |
| In-reply-to: | <001401c2f30a$c5cc0560$269437d2@xtr743187> |
| References: | <[email protected]> <[email protected]> <[email protected]> <003201c2f247$ee408200$0100007f@xtr743187> |
| Reply-to: | [email protected] |
| Sender: | <[email protected]> |
At 07:29 26/03/2003 +1200, you wrote: Hi all,I made a numerical mistake in my last posting. 25 Hz shift at 136 kHz is a ratio of about 0.009, or 0.9%. Of course, we would like the "QRM deviation" of 50 Hz lines to be much less than plus or minus 25 Hz.73, Bob ZL2CA Dear Bob, LF Group,25/136000 = 0.00018, or 0.018% for 25Hz shift - a 0.9% shift in the 50Hz mains frequency would lead to the 2720th harmonic shifting by 1224Hz... Cheers, Jim Moritz 73 de M0BMU |
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