LF Amateur Radio

Mike Dennison, G3XDV

LF Links

[Latest Activity - HOME PAGE] [My Station] [Calls Heard/Worked] [GW3XDV/P] [Links]
[Stretching the limits - extremely slow CW] [Spectrogram Plots] [Pictures]

Operators	Pictures of LF operators Personal sites of active LF operators CT1DRP IK2PII DF3LP OH1TN DK8KW OK1FIG F5MAF ON7YD G3LDO RU6LA In Russian, some English G3NYK SV1XW G3YMC V01NA G3YXM W4DEX G0MRF I5TGC	South Africa - a personal guide
Inductors	Many free computer programs originally from the late G4FGQ, including TOROID which helps when winding LF coils. GM0RWU's Java Toroid Design Applet gives the turns required on many types of toroidal core.
Transmitters, Transverters, Receivers and Oscillators	DDS VFO by SM6LKJ GW4ALG's LF Equipment G3YXM's 136kHz Transmitters G0MRF's 300W Tx G3YMC's Transverter Transverter by AA1A 700W Switch-mode Transmitter by G4JNT (PCX file) IK2PII's VXO IK2PII's Direct Conversion Receiver Modifying a TS-950 for better 136kHz performance
Antennas, Tuning Units and QRN Reducers	GW4ALG's Antennas G3YMC's Transmitting Loop Experiences Phasing-type QRN Reducer by AA1A The tiny antenna used by I5TGC who has been received in the UK, and his receive loop (follow site links) ON7YD's antenna pages IK2PII's Loading Coil M0BMU's Antenna Impedance/Phase Meter (PDF file
Propagation and Weather	Real time plots of Solar data Sunspots, conditions and much more Lightning Map of the World Lightning Map of Europe Lightning Map 600km radius of southern England NOAA site G3NYK's unique research into small signal propagation at 136kHz D-Region Absorption Predictions from NOAA
Best, First and Furthest LF DX	List at RU6LA's site The 'Matrix' at G3YXM's site
Software	For receiving QRSS Argo (probably the easiest to use) Spectran SpecLab For transmitting QRSS QRS ON5OO's Signal Strength Plotting Software For LF data mode WOLF
QRSS Screen grabs from remote receivers	HA6PX, G3YXM, DF6NM, W4DEX, NL9222 VE7TIL (these are not always operational, but are worth checking)
Useful LF pages	DXCluster 136kHz Spots AMRAD: Group of Experimenters in the US Longwave Club of America Very Low Frequency Group at Stanford University LF Page of Lyle Koehler, KØLR Cave Radio and Electronics Group (CREG) LF Frequency Allocations in Region 2 (Americas) SV1XV's info on LF in the Eastern Mediterranean
Other LF resources	rsgb_lf_group This is an e-mail reflector which sends daily e-mails of the very latest activity and technical discussion to all who subscribe (free). To join, simply send an e-mail to: majordomo@blacksheep.org with no subject and only subscribe rsgb_lf_group in the body of the message. [How to unsubscribe from the rsgb_lf_group] Russian speakers have a group at: http://groups.yahoo.com/group/lf_dw LF Today Eessential reading for everyone interested in getting started on LF, or trying to improve their existing station.
Other useful sites	Radio Society of Great Britain: The very latest amateur radio news, a comprehensive book shop and much more.

Last updated 16 Nov 2009