Altronic 77300SW

The Altronic 77300SW is a Forced Air Cooled dummy load specifically designed for ultra-power shortwave transmitters. Here are the key specifications and features:

Specifications:

1. Power Rating:
   • 300 kW continuous duty.
   • Other models available to order.
2. Impedance:
   • 50 ohms nominal.
3. Frequency Range:
   • DC to 30 MHz.
4. VSWR (Voltage Standing Wave Ratio):
   • Less than 1.15:1 over the operating range.
5. Input Connectors:
   • Fixed Flanged.
6. AC Power Required:
   • 200 – 460 VAC, 60/50 Hz
   • Or 400-480 VAC, 60/50 Hz.
7. Nominal Dimensions (Including Conn.):
   • 102 1/2″ x 72″ x 146 1/2″ (2.6m x 1.8m x 3.7m).
8. Nominal Weight:
   • 4000 lbs. (1816 kg).
9. Finish:
   • Beige Splatter.

Features:

• Designed especially for ultra-power shortwave transmitters.
• Air-cooled dummy load construction.
• Utilizes design techniques similar to Ultra High Power Medium Wave Loads.
• Superior RF characteristics under high power.
• Interlock feature for safety.
• Thermal overload protection.
• Screened louvered intake and output panels.
• Roof on outdoor units with no tuning required.

This dummy load is suitable for shortwave transmitters operating in the specified frequency range and offers high power handling capabilities with excellent RF characteristics. The inclusion of safety features such as interlock and thermal overload protection ensures reliable and secure operation. The design also incorporates convenient features like screened louvered intake and output panels, making it suitable for outdoor use.