Advances in communications in recent years have come at a startling pace. In the old days, tocommunicate via radio one needed a good antenna, a selective receiver, and a powerful transmitter.While those items are still useful, today there is one more item required: good software. The “weaksignal propagation reporter” software or WSPR (pronounced “whisper”) is…
Photo by kd1jv 80, 40, 30, 20 and 17 or 15 meter operation (17 or 15 meters selected at time of building) DDS VFO for wide tuning range with crystal stability, 50 Hz tuning steps. Single step or auto increment tuning Sensitive, 0.2 uV receiver with very low internal noise for exceptional S/N ratio. Selective…
The KN-Q7A single band SSB transceiver kit was designed specifically for the worldwide market by BA6BF, and kitted by BD6CR/4. As the upgraded version of the popular KN-Q7 (more than 500 kits were sold worldwide), the KN-Q7A has an improved circuit design and component selection, which makes it an ideal candidate for field operation, back…
Be “On Air” with your own radio station! BA1404 HI-FI Stereo FM Transmitter – Special Edition Kit is an exciting transmitter that will broadcast high quality stereo signal in 88MHz – 108MHz FM band. It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite…
15W PREMIUM SDA-15B Professional PC Control FM Transmitter cover 3m-15km 1/4 anti-rain antenna power kitset DHL EMS free shipping. SDA-15B is a versatile FM transmitter with a variety of protection features , like high-fidelity sound, excellent harmonic, good clutter suppression. SDA-15B application is flexible, convenient and suitable for a variety of short-range wireless radio. Such…