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| To: | <[email protected]> |
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| Subject: | RE: VLF: W4DEX to IK1QFK at 8822Hz |
| From: | <[email protected]> |
| Date: | Fri, 19 Dec 2014 12:23:24 -0500 |
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Paul, Impressive (low) system noise and agreement of Example 6 model with results. 73, Jim AA5BW -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Paul Nicholson Sent: Thursday, December 18, 2014 5:14 PM To: [email protected] Subject: Re: VLF: W4DEX to IK1QFK at 8822Hz > 11dB @ 0.12fT and 278 uHz implies approximately > 2fT/root-Hz aggregate noise? That's about right for a quiet night. That's after sferic blanking - before the blanker the background is some 20dB or more higher. The system noise floor is about 0.2 fT RMS in 1Hz. There happens to be a fairly accurate model of the antenna and receiver in example 6 of this program http://abelian.org/lcnetgen/ which I've been working on for a few months. LCnetgen may be handy for modelling LF/VLF antennas and coils. -- Paul Nicholson http://abelian.org/ -- |
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