Wisycom RPA25

The Wisycom RPA25 Power Amplifier is a compact device with unique characteristics designed for reliable and efficient operation in various scenarios. Here are the key features and technical specifications:

Key Features:

1. Low Inherent Noise:
   • Very low inherent noise ensures high-quality signal amplification.
2. Sharp Output Low-Pass Filter:
   • Features a sharp output low-pass filter to minimize amplified noise generated by the transmitter.
3. Output Mismatching Tolerance:
   • Can operate with output mismatching without shutting off.
   • Redirects reflected power from the antenna to its internal dummy load via the built-in output isolator, preventing overloading of the final power stage.
4. Front-Panel Meter and Adjustment:
   • Amplifier output power can be read on the front-panel meter.
   • Output power is adjustable by the front-panel knob (PWR ADJ.).
   • Pushing the red button (PUSH TO REFL) allows reading antenna reflected power on the meter.
5. Temperature Monitoring:
   • Accurate temperature measuring and surveillance.
   • Four LEDs indicate correct working (< 50 °C, ON), acceptable working temperature (+50 ÷ +55 °C, T NORM), high working temperature (+55 ÷ +60 °C, T HIGH), and over-heating (> +60 °C, PWR OFF).
   • Automatically shuts off in case of over-heating to prevent damage.
6. Wide Range of DC Powering-Voltages:
   • Can be powered by a wide range of DC voltages without reducing performance, thanks to the built-in high-efficiency DC/DC power converter.
7. Fuse Indicator:
   • LED indicator (FUSE OFF) in the front panel turns on if the fuse breaks.

Technical Data:

1. Frequency Range:
   • The RPA 25 can be supplied for one of the following ranges:
     • 170 ÷ 250 MHz (BW > 12 MHz).
     • 305 ÷ 360 MHz (BW > 12 MHz).
     • 470 ÷ 880 MHz (BW > 25 MHz).
     • Others on request.
2. Input Power:
   • 1.7 ÷ 3.5 W.
3. Output Power:
   • 20 ÷ 35 W [@ Power-in = 2W], adjustable by front-panel knob.
4. Harmonics:
   • < -80 dBc (typ. -85 dBc).
5. In/Out Impedance:
   • 50 Ohm.
6. Input VSWR:
   • < 1.2 : 1.
7. Power Source:
   • 10 ÷ 20 Vdc, negative ground.
8. Power Consumption [@13V]:
   • Approx. 4.5 A [@ Power-out = 25 W].
9. Size:
   • 243 x 87 mm (½ x 19”/2U standard-rack) x 230 mm depth.
10. Weight:
    • 4.5 kg approx.