VLF Cave

(3:9)

VLF CAVE RADIO beacon transmitter using CAPACITIVE DISCHARGE through a tuned resonant high Q antenna

(49)

TTE Through The Earth Cave Radio MULTiPLE VLF Frequency Beacon: to determine best VLF freq for COMMs

(34)

W1VLF VLF LF Band Scan 2023

(36:55)

pi4 DiY 'Through the Earth' CAVE RADIO 12kHZ VLF RTTY Transmitter \u0026 Receiver - LIVE demo

(1:34)

Cave Radios with Bo Lenander (Old version)

(16:25)

Underground \u0026 Through-The-Earth Communications (OCARC \u0026 USMA)

(1:14:36)

Ham Radio - Ground spike antenna. Using the earth to receive LF and VLF

(10:42)

Lightning Atmospheric Sounds - Nasa VLF-3 Receiver

(14:49)

pi4 DiY 'Through the Earth' CAVE RADIO VLF Transmitter - 2 VOICE channels \u0026 1 Data channel for text

(2:17)

Pi4 REMOTE VLF SonoBus TRANSCEiVER: for Through The Earth COMMs using multiple smart phone Operators

(43)

TangerineSDR VLF Module (A new module!) - TAPR Digital Communications Conference 2020

(32:4)

Cave radio RFI interference

(36)

Weak Signal RX \u0026 decode from a CAVE RADIO VLF TRANSMITTER using DominoEX Micro digital mode \u0026 FLdigi

(2:42)

Pi4 CAVE Transmitter - VLF RF LSB Dual-Band - 9Khz \u0026 14Khz - both VOICE \u0026 TEXT MESSAGING - LIVE Demo

(7:33)

full duplex DUAL BAND{ULF \u0026 VLF} BPSK63F text messaging: for Cave to Surface Through the Earth COMMs

(4:21)

VLF 336KHZ beacon oddity copy 05122018 using Rycom6041 SLM

(1:33)

VLF Station, Grindavik.

(5:11)

Raspberry Pi 4, Through the earth, VLF dual band, full duplex, CW Transceiver (TX @18Khz RX @10Khz)

(1:1econd)