Foundations Of Amateur Radio

Foundations of Amateur Radio Today I'm going to talk about repeaters. These invisible services that sit on a particular frequency and do magic things to your signal. First of all, the best way to think of a repeater is to think of it as two radios. One is the receiver, the other the transmitter. The way it works is that the receiver hears your signal and sends that audio to the transmitter which sends it out over the air. For this to work, there need to be two frequencies in use, the one that you're transmitting on and the one that the repeater is transmitting on. From this simple idea, many different things flow. There is no rule that states that the receiver and the transmitter need to be in the same place, let alone on the same band; if they're on different bands, it's called a cross-band repeater. If the receiver and the transmitter are on the same band, the system needs to deal with the fact that a strong signal is being transmitted by the repeater right next to where the receiver is. If you're not