This mini tuner circuit provides a good training ground for beginners since it consists of very few essential parts but enough to make a complete tuner.
This RF receiver kit has two relays on board, allowing you to control them in both momentary or latch mode! Perfect for controlling the lights remotely, garage door opener, etc.
Works together with the K8056 relay card, 8 addresses allow the use of multiple receivers, 'all clear'- function, toggle or momentary mode for each key, open-field range up to 50m
This is half the capabilities of QK180. It's a two channel rolling code UHF remote control unit with 2 relays on-board, which can be set for either momentary or latching mode. Up to 15 Tx units can be learned by one RX board. 12VDC.
This small but powerful FM Phone transmitter kit attaches to a phone line & transmits the conversation into the FM band. It uses the phone line
itself as an aerial. No battery required since it draws its power from the phone line.
This project is a simple 2-transistor VHF power amplifier, with about 16dB gain, and requires no tuning or alignment procedures. Wideband techniques have been used in the design and the circuit is equipped with a "low-pass" filter to ensure good output spectral purity.
The FM Transmitter kit provides two transmitting
frequencies set by the two crystals provided. You can use
other crystals to transmit on other frequencies.
Increase your range with this amplifier kit: QK171
US Dollars
