Specifications for the Amplifier Research 350AH1 include:
Operation: Class AB Linear
Frequency Response: 10Hz–1 MHz instantaneously
Power Output: (1.79 Ohm load)
CW, Minimum: 350 watts, 10 Hz–300 kHz, 350–55 watts, 300 kHz–1 MHz
Voltage Output, Minimum: 25 Vrms, 10 Hz–300 kHz, 25-10 Vrms, 300kHz–1MHz
Current Output, Minimum: 14 Arms, 10 Hz–300 kHz, 14–5.5 Arms, 300 kHz–1 MHz
Flatness: ±1.0 dB, 10 Hz–300 kHz ±4.0 dB, 300 kHz–1 MHz
Gain (Power): 47 dB minimum, 10 Hz–300 kHz 39 dB minimum, 300 Hz–1 MHz
Gain Control Range: 15 dB minimum
Input Signal: 0–2 Vrms
Input Impedance: 600 ohms typical
Output Impedance: < 1Ohm typical
Mismatch Tolerance: 100% of rated power without fail.
Modulation Capability: Will faithfully reproduce AM, FM, or pulse modulation appearing on the input signal
Primary Power: 90–260 VAC 47 to 63 Hz, single phase, 1200 watts maximum
Connectors
RF Input: Type BNC female
RF Output: 5-way binding post
Remote Control
IEEE-488: 24 pin female
RS-232: 9 pin subminiature D (female)
USB: Type B (female)
Remote Interlock: 15 pin subminiature D
Cooling: Forced air (self contained fans)