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| To: | <[email protected]> |
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| Subject: | RE: VLF: Carrier on 8270.00709 Hz |
| From: | <[email protected]> |
| Date: | Thu, 31 Aug 2017 16:07:06 -0400 |
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Wow! Paul, do these results meet your standard criteria for confirmation? 73, Jim AA5BW -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Paul Nicholson Sent: Monday, August 28, 2017 1:25 PM To: [email protected] Subject: Re: VLF: Carrier on 8270.00709 Hz Joe VO1NA wrote: > Testing the coil amp and dds ... [24th] > 8 uW. > Off at ~1600 utc today. [27th] http://abelian.org/vlf/tmp/170828a.gif That's two daytime signals, 25th and 26th 10:00 to 20:00, combined coherently, bin width is 27.8 uHz. S/N of the combined days is 16.0 dB. Adding the two days non-coherently gives only 9 dB. I couldn't get anything useful out of the nighttime signal. I'll be glad when you get a GPS locked carrier, it's a bit tricky coherently combining recordings when the frequency is not known! -- Paul Nicholson -- |
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