GMT 400

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This channel isn't about anything in particular. Just stuff I upload on occasion. Thanks for checking it out.

Latest Videos

Limit Switch Endstop Stage for NEMA 23 Stepper

Limit Switch Endstop Stage for NEMA 23 Stepper

GMT 400

104 views·9 months ago

Active Antenna Preamp Causing RFI Noise On HF

Active Antenna Preamp Causing RFI Noise On HF

GMT 400

109 views·11 months ago

Small Shielded Loop Antenna on 40 meter frequency band using a Hermes Lite 2 SDR and Thetis Console.

Small Shielded Loop Antenna on 40 meter frequency band using a Hermes Lite 2 SDR and Thetis Console.

GMT 400

170 views·11 months ago

GMT400 C1500 Still Running After 30 Years

GMT400 C1500 Still Running After 30 Years

GMT 400

47 views·1 year ago

Circularly Disposed Antenna Array (CDAA) Receiving Systems Used By NATO during Cold War

Circularly Disposed Antenna Array (CDAA) Receiving Systems Used By NATO during Cold War

GMT 400

722 views·1 year ago

Circularly Disposed Antenna Array, Cold War Radio Direction Finding Antenna. (CDAA Antenna).

Circularly Disposed Antenna Array, Cold War Radio Direction Finding Antenna. (CDAA Antenna).

GMT 400

874 views·2 years ago

Multi-Impedance Switched Transformer for Short Vertical HF Antennas

Multi-Impedance Switched Transformer for Short Vertical HF Antennas

GMT 400

628 views·2 years ago

Sleeve Monopole Antenna - Cold War Antenna - Circularly Disposed Antenna Array - CDAA.

Sleeve Monopole Antenna - Cold War Antenna - Circularly Disposed Antenna Array - CDAA.

GMT 400

1.2K views·2 years ago

DC Solenoids Response Time, Current, and Voltage

DC Solenoids Response Time, Current, and Voltage

GMT 400

847 views·3 years ago

Shortwave Shielded Loop Receiving Antenna - Build It

Shortwave Shielded Loop Receiving Antenna - Build It

GMT 400

32.0K views·3 years ago

GMT 400 - NatokHD | NatokHD