Equipment

To listen and/or operate on air, radio amateur needs some kind of equipment. Generally, there are two significant parts: receiving and transmitting. To receive signals, we need antennas, antanna feeding cables, impedence matchinng units (also known as antenna tuners) and a receiver. To transmit, we need a signal generator (telepgrah or audio), transmitter, low-pass filters (must) and receiving setup. Setup varies from station to station and may include additional pieces of equipment, such as antenna tuners, power meters, power amplifiers. Combination of receiver and transmitter is known as tranceiver, which mostly holds necessary elements in one case. Some enthusiasts build equipment themselves, some obtain them from shops, second-hand radio amateur related events. This book is about equipment I had experience with, general thoughts, ideas and vision.