Heros Technology

VLF LF Converter to 4MHz-4.5MHz

LF band. European Broadcast stations.

Recorded with generic SDR radio.

Antenna: 80m trap dipole

VLF LF Converter to 4MHz-4.5MHz

135.7KHz-137.8KHz Amateur band

Recorded Spectrum with generic SDR radio.

Antenna: 80m trap dipole.

VLF LF Converter to 4MHz-4.5MHz

EI0CF beacon on 501KHz.

North Ireland

Sending V V V E I 0 C F

Received in London. 500Kms

Recorded with generic SDR ...

VLF LF Converter to 4MHz-4.5MHz

LF band Aeronautical beacons

Recorded with generic SDR radio.

Antenna: 80m trap dipole.

VLF LF Converter to 4MHz-4.5MHz

LF band. Time and Frequency stations

Recorded with generic SDR radio.

Antenna: 80m trap dipole.

SCR Preselector working on 80m.

Recorded with WinRad and generic multiband SDR radio.

This video clip shows its effectivity against interferences.