User contributions
From HFUnderground
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- 20:48, 4 July 2015 (diff | hist) m Windows Audio Routing
- 20:48, 4 July 2015 (diff | hist) m Windows Audio Routing
- 20:46, 4 July 2015 (diff | hist) m Windows Audio Routing
- 20:44, 4 July 2015 (diff | hist) m Windows Audio Routing
- 20:43, 4 July 2015 (diff | hist) m Windows Audio Routing
- 20:42, 4 July 2015 (diff | hist) m Windows Audio Routing
- 20:40, 4 July 2015 (diff | hist) m Windows Audio Routing
- 20:40, 4 July 2015 (diff | hist) m Windows Audio Routing
- 20:39, 4 July 2015 (diff | hist) m Windows Audio Routing
- 20:38, 4 July 2015 (diff | hist) Windows Audio Routing (Initial entry, no formatting yet)
- 05:18, 7 June 2015 (diff | hist) N File:CHN4 4.jpg
- 05:18, 7 June 2015 (diff | hist) N File:CHN4 4.mp3 (top)
- 05:17, 7 June 2015 (diff | hist) Signal Identification (→PSK Modes: added CHN 4+4 PSK mode)
- 05:13, 7 June 2015 (diff | hist) N File:CIS12.jpg
- 05:12, 7 June 2015 (diff | hist) N File:CIS12.mp3 (top)
- 05:12, 7 June 2015 (diff | hist) Signal Identification (→PSK Modes: added CIS12 mode)
- 04:30, 24 January 2015 (diff | hist) m File:CODAR pulses.jpg
- 04:28, 24 January 2015 (diff | hist) N File:CODAR.mp3 (Audio recording of a 4 MHz area CODAR. The recording is done in multiple receiver modes. The first 40 seconds are in USB, the next 40 are in AM, and the final 40 are in LSB.) (top)
- 04:21, 24 January 2015 (diff | hist) N File:CODAR pulses.jpg (Amplitude / time image showing a few pulses of a 4 MHz CODAR. In this case the pulse is about 950 microseconds wide, with a 1900 microsecond pulse repetition interval, giving the fairly typical (for CODAR) 50% duty cycle.)
- 04:16, 24 January 2015 (diff | hist) N File:CODAR sweeps.jpg (Spectrum image showing the swept width of a typical 4 or 5 MHz CODAR. Typically the swept width gets wider as you go up in frequency bands.)
- 04:15, 24 January 2015 (diff | hist) m Signal Identification (→Non Communications Modes)
- 04:13, 24 January 2015 (diff | hist) Signal Identification (→Non Communications Modes: Added CODAR entry)
- 22:07, 11 January 2015 (diff | hist) N File:JT65.jpg (JT65 in the 20 meter ham band. Note that multiple signals start and stop at the same time.)
- 22:06, 11 January 2015 (diff | hist) N File:JT65.mp3 (JT65 signal recorded in the ham 20 meter band.) (top)
- 22:04, 11 January 2015 (diff | hist) Signal Identification (→MFSK Modes: Added JT65 entry)
- 13:50, 28 December 2014 (diff | hist) m Signal Identification
- 15:56, 27 December 2014 (diff | hist) N 4481 FSK (Initial STANAG 4481 FSK page entry) (top)
- 15:32, 27 December 2014 (diff | hist) m Signal Identification (→Non Communications Modes: PLUTO entry mod)
- 15:23, 27 December 2014 (diff | hist) m Signal Identification (→FSK Modes)
- 15:14, 27 December 2014 (diff | hist) m STANAG (top)
- 15:09, 27 December 2014 (diff | hist) N STANAG (Initial STANAG page entry, could certainly stand to be fleshed out a bit)
- 14:46, 27 December 2014 (diff | hist) m Signal Identification (→FSK Modes: Added link to STANAG page, page not yet written)
- 14:37, 27 December 2014 (diff | hist) m Signal Identification (→Non Communications Modes)
- 14:35, 27 December 2014 (diff | hist) m Signal Identification (→Spectrum Image)
- 06:21, 27 December 2014 (diff | hist) m Signal Identification (→Non Communications Modes: Spelling fix)
- 06:19, 27 December 2014 (diff | hist) N File:29B6.mp3 (Russian 29B6 radar. First 22 seconds of the recording uses an audio bandpass wide enough to capture the entire swept width. Remainder of the recording at more "normal" receiver passband widths, as might be heard by most listeners.) (top)
- 06:16, 27 December 2014 (diff | hist) N File:29B6.jpg (Russian 29B6 radar in ~9 kHz wide and 50 Hz rep rate mode of operation.)
- 06:15, 27 December 2014 (diff | hist) Signal Identification (Added Russian 29B6 radar)
- 01:46, 27 December 2014 (diff | hist) N File:UNID002 Pips.mp3 (Pips recording, three different examples, three different transmission dates.) (top)
- 01:45, 27 December 2014 (diff | hist) N File:UNID001 Sweepers.mp3 (Sweepers recording, multiple examples but all recorded in the ham 10 meter band.) (top)
- 01:44, 27 December 2014 (diff | hist) N File:UNID002 Pips.jpg (Image of Pips. 0.0625 second pulse length and 3.0 second pulse interval.)
- 01:43, 27 December 2014 (diff | hist) N File:UNID001 Sweepers.jpg (Image of sweepers in the ham 10 meter band.)
- 01:42, 27 December 2014 (diff | hist) Signal Identification (Added links to Pips and Sweepers recordings)
- 01:39, 27 December 2014 (diff | hist) Signal Identification (→Unidentified Signals: Added images for sweepers and pips)
- 14:04, 26 December 2014 (diff | hist) Signal Identification (→Unidentified Signals)
- 14:04, 26 December 2014 (diff | hist) m Signal Identification (→Unidentified Signals)
- 17:14, 15 December 2014 (diff | hist) m Signal Identification
- 16:42, 15 December 2014 (diff | hist) Signal Identification
- 11:44, 15 December 2014 (diff | hist) m Signal Identification
- 00:09, 15 December 2014 (diff | hist) N File:PLUTO 25Hz.mp3 (PLUTO radar in its less often used 25 Hz rep rate. In this case the swpet wdith is still 20 kHz, but the sweep repetition rate is only 25 Hz, so the chirp rate is halved. The audio in this recording is only 3 kHz wide, and represents how the signal migh) (top)
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