Ameritron Arb-704 Universal Amplifier Interface Buffer

Keys nearly any PAUseable with nearly any transceiver - Noiseless operation, transistor keying - Fast, QSK capable - Simple wiring - Every transceiver has a keying output for an amplifier - but not all those outputs are capable of keying the high voltages or currents of an amplifier. High voltages or voltage peaks can destroy the keying stage of the transceiver. To prevent this an additional buffer relay like the ARB-704 is used. - The ARB-704 is a semiconductor keying buffer to control the PTT line of nearly any amplifier. It handles voltages up to 200V and currents up to 300m - A. This covers nearly all power amplifiers available on the market today. The idle voltage of the amp can be either positive or begative or even AC. The keying buffer keys against ground, works absolutely without noise and is fast enough to handle QSK keying without changing the shape of the key pulse. - The input can be configured by internal jumpers for various voltage levels, either positive or negative. Th