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HIGH POWER MEDIUM WAVE LOADS

Using much of the same application technology of the standard 6700 Series, Altronic Research’s 77000 Series 50-ohm ultra high power loads were developed for today’s technically advanced medium wave installations. These loads demonstrate excellent and stable RF characteristics during their full range of operating power. Another unique feature for the Ultra Line is that no tuning of the load is required, making installation a faster process. These loads can be ordered as an indoor or outdoor model. The outdoor units have screened louvers at the air intake and air output and a roof to provide a rain shield for the RF input connector and electrical boxes. The larger models in this series are shown as the outdoor model only. Numerous Ultra High Power Loads are installed worldwide, including Croatia, Nova Scotia, Kuwait, Saudi Arabia, Quatar, and Vietnam. A typical VSWR plot of these loads is shown below.

Model 7750 Forced Air Cooled
Power Rating: 50kW continuous duty
Impedance: 50 ohms nominal
Frequency Range: 540 to 1750 KHz
VSWR: < 1.1:1 Over Operating Range (1.05 or better available)
Input Connectors: 3 1/8″, 4 1/16″ or 6 1/8″ EIA Flanged
AC Power Required: 200-460 Volts, 50/60 Hz, 1 or 3 Phase
Nominal Dimensions (Including Conn.): 76″ x 52″ x 42″ H (1.9m x 1.3m x 1.1m)
Nominal Weight: 450 lbs. (204 kg)
Finish: Beige Splatter
Model 7775 Forced Air Cooled
Power Rating: 75kW continuous duty
Impedance: 50 ohms nominal
Frequency Range: 540 to 1750 KHz
VSWR: < 1.1:1 Over Operating Range (1.05 or better available)
Input Connectors: 3 1/8″, 4 1/16″ or 6 1/8″ EIA Flanged
AC Power Required: 200-460 Volts, 50/60 Hz, 1 or 3 Phase
Nominal Dimensions (Including Conn.): 95 1/2″ x 52″ x 42″ H (2.4m x 1.3m x 1.1m)
Nominal Weight: 500 lbs. (227 kg)
Finish: Beige Splatter95 1/2″ x 52″ x 42″ H (2.4m x 1.3m x 1.1m)
Model 77100 Forced Air Cooled
Power Rating: 100kW continuous duty
Impedance: 50 ohms nominal
Frequency Range: 540 to 1750 KHz
VSWR: < 1.1:1 Over Operating Range (1.05 or better available)
Input Connectors: 3 1/8″, 4 1/16″ or 6 1/8″ EIA Flanged
AC Power Required: Indoor: 200-460 Volts, 50/60 Hz, 1 or 3 Phase
3 Horsepower
Outdoor: 200-460 Volts, 50/60 Hz, 3 Phase
4 Horsepower
Nominal Dimensions (Including Conn.): Indoor: 73″ x 86 1/2″ x 43″ (1.8m x 2.2m x 1.0m)
Outdoor: 87 1/4″ x 81″ x 43 1/4″  (2.2m x 2.1m x 1.1m)
Nominal Weight: Indoor: 1400 lbs. (636 kg) Outdoor: 1600 lbs. (727 kg)
Finish: Beige Splatter
Model 77150 Forced Air Cooled
Power Rating: 150kW continuous duty
Impedance: 50 ohms nominal
Frequency Range: 540 to 1750 KHz
VSWR: < 1.1:1 Over Operating Range (1.05 or better available)
Input Connectors: 3 1/8″, 4 1/16″ or 6 1/8″ EIA Flanged
AC Power Required: Indoor: 200-460 Volts, 50/60 Hz, 1 or 3 Phase
3 Horsepower Outdoor: 200-460 Volts, 50/60 Hz, 3 Phase 4 Horsepower
Nominal Dimensions (Including Conn.): Indoor: 73″ x 86 1/2″ x 43″ (1.8m x 2.2m x 1.0m)
Outdoor: 87 1/4″ x 81″ x 43 1/4″  (2.2m x 2.1m x 1.1m)
Nominal Weight: Indoor: 1500 lbs. (681 kg) Outdoor: 1700 lbs. (772 kg)
Finish: Beige Splatter
Model 77200 & 77300 Forced Air Cooled
Power Rating: Indoor/Outdoor 77200: 200kW
Indoor/Outdoor 77300: 300kW
Impedance: 50 ohms nominal
Frequency Range: 540 to 1750 KHz
VSWR: < 1.1:1 Over Operating Range (1.05 or better available)
Input Connectors: 3 1/8″, 4 1/16″ or 6 1/8″ EIA Flanged
AC Power Required: 200-460 Volts, 50/60 Hz, 1 or 3 Phase 4 HP
Nominal Dimensions (Including Conn.): Indoor: 105″ x 70″ x 64 1/2″ (2.6m x 1.8m x 1.6m)
Outdoor: 105″ x 72 1/2″ x 80 1/2″ (2.6m x 1.8m x 2.0m)
Nominal Weight: Indoor: 1600 lbs. (727 kg)
Outdoor: 2000 lbs. (908 kg)
Finish: Beige Splatter
Model 77450 & 77600 Forced Air Cooled
Power Rating: Indoor/Outdoor 77450: 450kW
Indoor/Outdoor 77600: 600kW
Impedance: 50 ohms nominal
Frequency Range: 540 to 1750 KHz
VSWR: < 1.1:1 Over Operating Range (1.05 or better available)
Input Connectors: 4 1/16″, 6 1/8″ or 9 3/16″ EIA Flanged
AC Power Required: Indoor: 200-480 Volts, 50/60 Hz, 3 Phase 6 HP
Outdoor: 200-460 Volts, 50/60 Hz, 3 Phase 8 HP
Nominal Dimensions (Including Conn.): Indoor: 90″ x 70″ x 106 1/2″ (2.3m x 1.8m x 2.7m)
Outdoor: 106″ x 72″ x 106 1/2″ (2.7m x 1.8m x 2.7m)
Nominal Weight: Indoor: 3500 lbs. (1540 kg) Outdoor: 4000 lbs. (1816 kg)
Finish: Beige Splatter
Model 77750 Forced Air Cooled
Power Rating: 750kW continuous duty
Impedance: 50 ohms nominal
Frequency Range: 540 to 1750 KHz
VSWR: < 1.1:1 Over Operating Range (1.05 or better available)
Input Connectors: 6 1/8″, 9 3/16″ EIA Flanged
AC Power Required: 200-480 Volts, 50/60 Hz, 3 Phase, 6 Horsepower
Nominal Dimensions (Including Conn.): Consult Factory
Nominal Weight: 4500 lbs. (2043 kg)
Finish: Beige Splatter
Model 771500 Forced Air Cooled
Power Rating: 1500kW continuous duty
Impedance: 50 ohms nominal
Frequency Range: 540 to 1750 KHz
VSWR: < 1.1:1 Over Operating Range (1.05 or better available)
Input Connectors: 9 3/16″ EIA Flanged
AC Power Required: 200-460 Volts, 50/60 Hz, 3 Phase, 18 Horsepower
Nominal Dimensions (Including Conn.): 121″ x 99″ x 152″ (3.1m x 2.5m x 3.9m)
Nominal Weight: 6000 lbs. (2724 kg)
Finish: Beige Splatter