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Total 4 documents matching your query.

1. Re: LF: Problem with generator to VLF transmitter (score: 1): Author: "Markus Vester" <[email protected]>; Date: Sun, 2 Dec 2012 23:21:50 +0100; Marcin, happy to read about upcoming Dreamers band activity! Just a few comments: - 70 mH inductance seems too small for the antenna capacitance. Using capacitors (4 nF) in parallel to the antenna is; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-12/msg00055.html (14,482 bytes)
2. Re: LF: Problem with generator to VLF transmitter (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Sun, 02 Dec 2012 22:51:24 +0100; Hi Marcin, Am 02.12.2012 21:42, schrieb Marcin: What we still need is a generator to feed the transmitter. Required parameters are the following: 8,970kHz frequency regulating range +-0.05Hz adjustin; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-12/msg00306.html (11,212 bytes)
3. LF: Problem with generator to VLF transmitter (score: 1): Author: "Marcin" <[email protected]>; Date: Sun, 2 Dec 2012 21:42:01 +0100; Hi All! We’re building an 8,970kHz VLF transmitter at SP2KDS club. We almost have everything in place: transmitter (on IGBT transistors – diagram attached) antenna coil 76mH http://www.sp; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-12/msg00534.html (10,352 bytes)
4. Re: LF: Problem with generator to VLF transmitter (score: 1): Author: "Graham" <[email protected]>; Date: Sun, 02 Dec 2012 22:07:04 +0100; two signals shifted by 180 degrees...Is this in time ? or amplitude ? [if amp then invert ?] change to duty cycle ? square wave drive ? would this be better in hardware , then any signal could be use; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-12/msg00650.html (11,731 bytes)

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