In addition, if the TR relay is not fully closed before RF from the power amplifier is applied, excessive RF may leak into the receive side of the relay. ... Fig 19.66 is a block diagram of a station with a remote-mounted preamp and antenna relays. ... The LEDs serve as built-in indicators to check performance and sequencing of the generator. ... RX Isolation Relay D RX TR + 12 V torRX + 12V forTX XVTR Relay A alt; ]7h Power Amp 0 TR Relay Relay Power Supply Amp Control Relay T DCanbsp;...
|Title||:||The ARRL Handbook for Radio Communications|