A high-quality RF (ULF/VLF/LF/MF/HF) converter for software defined radio devices like our NESDR series (RTL-SDR) and the HackRF--extends your radio range down to 300Hz. The Ham It Up Plus is fully assembled in a custom, black, aluminum enclosure, tested, and ready to use. Includes SMA to SMA connector to attach the output to your radio, and an SMA to BNC antenna adapter.
VLF-3 circuit board This receiver has been used for several years during Summer Sessions of the International Space University. Here, a group of students - between 6 and 20 in number - were to build the receiver, make it work, and then set out to explore the universe of radio emissions at these low frequencies.
The NE602 is a low-power VHF monolithic double-balanced mixer with input amplifier, on-board oscillator, and voltage regulator. It is intended for high performance, low power communication systems.
The Software Defined Receiver: SAQrx. SAQrx is a sound card based receiver software by Johan Bodin, SM6LKM, originally covering the frequency band from 0-22 kHz and running under Microsoft Windows. It requires a sound card capable of full duplex at 44/48 kHz sampling rate (satisfied by most of the onboard PC sound cards).
7 - The working of the local oscillator can be checked with a simple VLF receiver or frequency counter. Remember that it is supposed to be set 10.7MHz above the desired listening range. If the oscillator works, only a defective or incorrectly installed part can prevent the rest of the receiver circuit from working.
Feb 04, 2018 · Feb 4, 2018 - AV multiband VLF receiver All-Electronic LRLs