priyom.org

LF/VLF research by Jarod

This is an piece of work done by one of the guys named jarod from our irc, though not officially a priyom
admin he has done some incredible work for the priyom website and we cant thank him enough!


This is from a page constantly updated by jarod (so this may not be always up to date)
The fully up to date version can be found here


3 - 30 kHz http://en.wikipedia.org/wiki/Very_low_frequency
30 - 300 kHz http://en.wikipedia.org/wiki/Low_frequency

http://ik4hdq.net/doc/0to5MHz.htm
http://www.vlf.it/trond2/10-15khz.html
http://www.smeter.net/stations/vlf-stations.php
http://www.qsl.net/g4cnn/vlf/vlf.htm
http://www.qsl.net/g4cnn/lf/lf.htm
http://www.w1vd.com/vlf.html
http://sidstation.loudet.org/stations-list-en.xhtml

147.3 kHz:
147.30 DDH47 - DWD Pinneberg, DEU
http://dxersguide.blogspot.com/2009/12/ddh47-1473-khz-in-qrss-3.html

146.4 kHz:
--- - unid Datatrak station

140.6 kHz:
http://www.powerdatarecovery.com/cd-dvd-resources/recordable-cd.html
There are two wobble frequency for recordable CD, DVD-R(w) uses 140.6KHz, while the DVD+r (w) uses 817.4 KHz.

139.0 kHz:
129,10 DCF49 - EFR Telecontrol Mainflingen, DEU
139,00 DCF39 - EFR Telecontrol Burg, DEU
http://www.qru.de/dcf39-beacon.html
http://hamradio.nikhef.nl/amrad/dcf39a.htm

135.6 kHz:
HGA22 - EFR Telecontrol Lakihegy, HUN
http://www.efr.de/en/CMS/services/meteotime_2_protected_data_transmission_via_long_wave_transmitter_1052.aspx
http://www.efr.de/en/CMS/services/reception_area_1017.aspx

134.5 kHz:
Low -frequency RFID tags are commonly used for animal identification, beer keg tracking, and automobile key-and-lock, anti-theft systems and race timings.. Generally, two RFID frequencies are used: 125kHz (the original standard) and 134.5kHz, the international standard.
http://www.samvith.com/index.php?option=com_content&view=article&id=45&Itemid=67

133.2 kHz:
--- - unid Datatrak station

129.1 kHz:
129,10 DCF49 - EFR Telecontrol Mainflingen, DEU
139,00 DCF39 - EFR Telecontrol Burg, DEU
http://www.qru.de/dcf39-beacon.html
http://hamradio.nikhef.nl/amrad/dcf39a.htm

125.0 kHz:
RFID http://www.youtube.com/watch?v=03DudO5AFYI
DCF45  Mainflingen/PTB

124.5 kHz:
http://www.plicht.de/ekki/varia/mainflingen.html
The third transmitter is used for broadcasting a differential GPS signal on 124.5 kHz, power?

109.380 kHz:
http://www.r-interface.com/products.php?r=2&node=1&art=2
Maximum alias-free output bandwidth of N=64: 0.8*Fs/256 ( 437.5 KHz for Fs=140MHz), N=256: 0.8*Fs/1024 ( 109.3 kHz for Fs=140MHz)
http://www.bid-on-equipment.com/detail~id~94635.htm
Freq 109.38 kHz

93.8 kHz:
http://www.oneworldtouch.com/product.html?pid=54
Synchronization Range 
Horizontal: 
24.0 - 93.8 kHz(Analog)
24.0 - 93.8 kHz (Digital)
Vertical:
Video band width / Pixel Clock: 25.2 MHz to 268.5 MHz(DualLink)

93.750 kHz:
http://en.wikipedia.org/wiki/Television_encryption
Added an interfering sine wave of a frequency (circa 93.750 KHz) to the video signal. This interfering signal was approximately six times the frequency of the horizontal refresh. It had an optional sound scrambling using Spectrum Inversion. Used in the UK by BBC for its world service broadcasts and by the now defunct UK movie channel "Premiere".

83.9 kHz:
http://jn.physiology.org/content/95/4/2179.full
Although the drugs increased magnitude of response to the 83.9-kHz signal, combinatorial inhibition at 0-ms delay remained strong (BF, 83.9 kHz, 55 dB SPL; LF, 18.1 kHz, 74 dB SPL). B: type I unit tested with STRY (15 nA) and then BIC + STRY (BIC: 15 nA).

82.75 kHz:
GYB - Royal Navy London, GBR

81.0 kHz:
GYN2 - Royal Navy Skelton, GBR

78.1 (78.130) kHz:
http://www.docstoc.com/docs/74989186/Pulse-Width-Modulation-Unit-PWM-MHz
CPU Clock 8bit 78.1 kHz
http://hackipedia.org/Hardware/SPI/SPI%20-%20Serial%20Peripheral%20Interface%20(SPIV3)%20Block%20Description.pdf.raw-conversion.utf-8.txt

77.5 kHz:
DCF77 - Mainflingen Time Signal, DEU

75.0 kHz:
HBG - Geneve Prangins/Neuchatel TS, SUI

73.6 kHz:
CFH - Nova Scotia, CAN

72 kHz:
http://www.teledynedalsa.com/mv/products/cameradetail.aspx?partNumber=P3-S0-16k40
Max. Line Rate 72 kHz

70.0 kHz:
No idea.

69.1 (69.130) kHz:
http://www.electronics-tutorials.ws/waveforms/astable.html
See: Capacitor Values

68.0 kHz:
GYN - UKSUBCAMS Northwood, GBR
GYN1 - Royal Navy Northwood, GBR

66.7 (66.670) kHz:
RBU - Moscow Time Signal, RUS
http://answers.yahoo.com/question/index?qid=20110613184516AAaSPpt
v=fL where v= velocity , f= frequency of wave and l = wavelength. plug the variables .
3.0x 10 ^8 m/s 4.5x10^3m = 66,666.7 htz or 66.67khz. the frequency remains the same in water.

65.8 kHz:
FUE - French Navy Brest, FRA

62.6 kHz:
FUB - French Navy Paris, FRA
FUE - French Navy Brest, FRA

61.2 kHz:
http://www.electro-tech-online.com/electronic-projects-design-ideas-reviews/6587-coin-selector.html
But I found that when there is no coin in the coil, the LC osc at 60.5KHz. It changes to 58.5KHz when I place a 1 yuan coin in the coil. and 61.2KHz for a 1 jiao coin.

60.0 kHz:
MSF - Anthorn Time Signal, GBR

57.4 kHz:
NRK - US Navy Grindavik, ISL

53.4 kHz:
TBG - Turkish Navy Canakkale, TUR

53.3 kHz:
http://superuser.com/questions/164926/why-cant-i-get-the-right-screen-resolution-in-ubuntu
h: width 1152 start 1216 end 1336 total 1520 skew 0 clock 53.3KHz
v: height 864 start 867 end 871 total 897 clock 59.4Hz

52.0 kHz:
GYW1 - Royal Navy Crimond, GBR

49.9 (49.92) kHz:
http://www.scribd.com/doc/44302065/FPGA-Based-Space-Vector-PWM-Control-IC-For
frequency can be set from 195 Hz to 49.92 kHz.
http://www.opencircuits.com/Minimig_display_compatibility
PAL mode works somehow as a shifted picture is shown, but the screen keeps complaining showing a constant warning message about wrong vertical frequency of 49.9 KHz

49.0 kHz:
SXA - Greek Navy Marathon, GRC

46.9 (46.880) kHz:
Control PIC.
Timer 2 ticks at 46.880 kHz
http://thomasmichon.com/projects/2006/strafe/code/strafe1_link.c

45.9 kHz:
NSY - US Navy Niscemi, ITA
SXA - Greek Navy Spata Attikis, GRC

44.450 kHz:
http://www.sifcoasc.com/pdf/calibration-procedure-calcuplate0-II.pdf
TYPE - VOLTS FULL SCALE - FREQUENCY FULL SCALE
30A unit 30.00mV 42.667khz
60A unit 60.00mV 42.665khz
200A unit 50.00mV 35.556khz
500A unit 25.00mV 44.450khz

44.2 kHz:
HWK - Swedish Navy Karlskrona, SWE
SAS2 - Swedish Navy Varberg, SWE
SRC - Swedish Navy Ruda, SWE

43.7 kHz:
http://www.hot.ee/eptesicus/measuring.htm
Peak frequency along 100% of the pulse length (PF100) - 43.7 kHz

42.5 kHz:
SRC - Swedish Navy Varberg ?, SWE

40.7 kHz:
NAU - US Navy Aguada, PTR

38.9 kHz:
IR remote control
http://www.physicsforums.com/showthread.php?t=486900
the carrier frequency is 38.9 khz.

38.0 kHz:
??? > http://tech.groups.yahoo.com/group/VLF_Group/message/15291
??? > http://tech.groups.yahoo.com/group/VLF_Group/message/13432
http://www.radioshack.com/product/index.jsp?productId=2049727
38kHz Infrared (IR) Receiver Module
http://en.wikipedia.org/wiki/Consumer_IR
See: Technical information

37.5 kHz:
NRK - US Navy Keflavik/Grindavik, ISL

35.97 kHz:
http://digital-diy.com/Swordfish-Compiler-Code-Examples/digital-to-analogue-conversion-dac-via-pwm.html
Note it says 556 steps @ 35.97Khz with a 20Mhz

31.250 khz:
http://www.system16.com/hardware.php?id=696
1st Configuration : YM2151 @ 4 MHz & SegaPCM @ 15.625 kHz 
2nd Configuration : YM2203 @ 4 MHz & SegaPCM @ 31.250 kHz
- http://www.syncblaster.com/syncblaster_cables.html
Computers supply RGB signals with a horizontal frequency of 31.250KHz.

27.0 kHz:
U.S. Navy TACAMO (Take Charge and Move Out) mobile communication stations. The transmitter locations are unknown and subject to change.

26.7 kHz:
TBB - Turkish Navy Bafa, TUR

25.5 kHz:
Six Russian TS stations transmit on this frequency at different times. Their locations are as follows:
RJH63 Krasnodar, Russia
RJH66 Bishkek, Kyrgyzstan
RJH69 Molodechno, Belarus
RJH77 Arkhangelsk, Russia
RJH99 Nizhniy Novgorod, Russia
RAB99 Nizhniy Novgorod, Russia
All these stations have the nickname "Beta."
http://en.wikipedia.org/wiki/Beta_(time_signal)

25.2 kHz:
NML4 - US Navy Atlantic, La Moure, USA

25.1 kHz:
Six Russian TS stations transmit on this frequency at different times. Their locations are as follows:
RJH63 Krasnodar, Russia
RJH66 Bishkek, Kyrgyzstan
RJH69 Molodechno, Belarus
RJH77 Arkhangelsk, Russia
RJH99 Nizhniy Novgorod, Russia
RAB99 Nizhniy Novgorod, Russia
All these stations have the nickname "Beta."
http://en.wikipedia.org/wiki/Beta_(time_signal)

25.0 kHz:
RAB99 - RN Pokravka comm. ctr. Khabarovsk, RUS
RJH63 - Krasnodar Time Signal, RUS
RJH66 - RN Time Signal Bishkek, KGZ
RJH66 - Chaldovar Radio Centre, KGZ
RJH69 - Molodecno Time Signal, BLR
RJH69 - RN Vileyke comm. centre, BLR
RJH77 - Arkhangelsk Time Signal, RUS
RJH99 - Nizhniy Novgorod Time Signal, RUS
http://www.youtube.com/watch?v=T3_JsOdRL-8

24.0 kHz:
NAA - US Navy Cuttler Mayne, USA

23.4 kHz:
DHO38 - German Navy Saterland-Ramsloh, DEU

23.0 kHz:
Six Russian TS stations transmit on this frequency at different times. Their locations are as follows:
RJH63 Krasnodar, Russia
RJH66 Bishkek, Kyrgyzstan
RJH69 Molodechno, Belarus
RJH77 Arkhangelsk, Russia
RJH99 Nizhniy Novgorod, Russia
RAB99 Nizhniy Novgorod, Russia
All these stations have the nickname "Beta."
http://en.wikipedia.org/wiki/Beta_(time_signal)

22.1 kHz:
GQD - Royal Navy Anthorn, GBR

21.7 kHz:
HWU - French Navy Le Blanc, FRA  

20.9 kHz:
HWU - French Navy Le Blanc, FRA

20.5 kHz:
Six Russian TS stations transmit on this frequency at different times. Their locations are as follows:
RJH63 Krasnodar, Russia
RJH66 Bishkek, Kyrgyzstan
RJH69 Molodechno, Belarus
RJH77 Arkhangelsk, Russia
RJH99 Nizhniy Novgorod, Russia
RAB99 Nizhniy Novgorod, Russia
All these stations have the nickname "Beta."
http://en.wikipedia.org/wiki/Beta_(time_signal)

20.4 kHz:
- hp 33120a signal generator
http://stewks.ece.stevens-tech.edu/E245L-F07/AgilentEdLabs/AudioLabs/HartfordModulation.pdf
Set HP 33120A to 20.4 kHz, with AM on - channel 2 (the 20.4 kHz modulated carrier)
- http://www.britastro.org/~solar/news.php

20.2 kHz:
ICV - NATO Isola di Tavolara, ITA

19.6 kHz:
--- - Royal Navy Skelton, GBR
GQD - Royal Navy/NATO Anthorn Cumbria, GBR

18.5 kHz:
--- - tent. DHO35 - GN Ramsloh/Saterland, DEU

18.3 kHz:
HWU - French Navy Le Blanc, FRA

18.1 kHz:
RDL ? - Russ. High Comm. Chaldovar, KGZ
RDL ? - Russ. High Comm. Vileyka, BLR
RDL ? - Russ. High Comm. Nizhniy Novgorod, RUS
RDL ? - Russ. High Comm. Imeritinskaya, RUS
RDL ? - Russ. High Comm. Krasnoarmeyskaya, RUS
VGK - General Staff Moscow, RUS

17.8 kHz:
---  - US Navy TACAMO, IW

17.2 kHz:
SAQ - Grimeton Sweden
http://www.alexander.n.se/transmissions.htm

17.0 kHz:
VTX2 - South Vijayanarayanam, India
Locator: MJ88vj
http://sidstation.loudet.org/stations-list-en.xhtml

16.4 kHz:
JXN - Norwegian Navy Norvik, NOR

15.625 kHz:
- CRT monitor!
http://duc.avid.com/archive/index.php/t-289056.html
It's the PAL/SECAM horizontal Line frequency: 625 Lines * 25 fps : 15.625 kHz
On NTSC, it is 15.734 kHz
- http://www.system16.com/hardware.php?id=696
1st Configuration : YM2151 @ 4 MHz & SegaPCM @ 15.625 kHz 
2nd Configuration : YM2203 @ 4 MHz & SegaPCM @ 31.250 kHz

16.1 kHz:
See screenshots http://x264.nl/dump/ no idea what it could be.

15.1 kHz:
--- - FOST Rosnay, FRA

14.880 kHz:
--- - Russian RSDN-20 station, RUS
http://en.wikipedia.org/wiki/Alpha_(radio_navigation)
http://www.vlf.it/alphatrond/alpha.htm

12.648 kHz:
--- - Russian RSDN-20 station, RUS

11.904 kHz:
--- - Russian RSDN-20 station, RUS

11.2 kHz:
http://www.youtube.com/watch?v=NkeQpBZ2a-M
http://www.ditchwitch.com/electronic-guidance/8500/

7.8 kHz:
http://www.findmall.com/read.php?58,1325012
10x12 SEF 7.8 kHz coil for Omega
- Metal detector 7.8khz - http://en.wikipedia.org/wiki/Metal_detector
- http://www.fisher-metal-detector.net/fisher-f5-metal-detector.php
7.8 kHz frequency - good for coin shooting, relic hunting, and casual gold prospecting.

5.5 kHz:
See screenshots http://x264.nl/dump/ no idea what it could be.

3.072 kHz:
http://www.idt.com/?genId=MK2745-24&cid=18691955
Output Frequency 1.024,1.4112,1.536,11.2896,12.288,16.9344,18.432,24.576 MHz,3.072,32 kHz,44.1 kHz,48 kHz,8.192,96 kHz,REF
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