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Circuits of SSB Transceiver, AM DSB Transmitter, Antennas, BFO, VFO, 807, FM Mike, Crystal filter and more.

OE4RLC, OE3DUS in Allhau Austria with wire antenna and full HF amateur radio bands coverage

St. Louis County Police Dispatch

Online internet HF LW MF web receiver based in Baden-Wuerttemberg cooperative state university Ravensburg Campus Friedrichshafen running a T2FD antennan under roof.

Online web SDR from central part of Ukraine powered by OpenWebRX KiwiSDR at UR5VIB

This page is a detailed description of a 6CL6 and 807 valve transmitter. The page includes the complete circuit diagram to build this transmitter and several pictures

A software defined receiver located in Tuscany Italy with a Windom antenna convering HF bands

Listen to HF communications via the KiwiSDR online receiver located in Badgad IRAQ locator LM23fh. This web receiver is running a MLA 30+ antenna and can be tuned easily on all HF bands from 10 to 80 meters.

A KiwiWebSDR from Dimapur Nagaland India running a loop antenna for HF bands

A KiwiWebSDR from Siliguri West Bengal India running a W6LVP loop antenna for HF Bands