WISCO International (Bird

Model 8431 Bird Electronic Corporation designs and builds a variety of forced-air, water-cooled, and self-contained loads for power levels up to 80kW, and attenuators up to 4kW.

We also welcome the opportunity to quote custom load and attenuator products.

Equipped with "SQC" Small Quick-Change RF Connector.

Specifications

Power Rating: 600 W continuous, vertical, 500 W continuous, horizontal.
Connectors: SQC Type (Female N supplied).
Frequency Range and VSWR: DC to 1 GHz at 1.10:1 max. 1 GHz to 2.5 GHz at 1.25:1 max.
Impedance: 50 ohms, nominal.
Ambient Temperature Range: -40°C to +45°C.
Operating Position: Horizontal or vertical.
Coolant: Dry (Convection cooled).
Finish: Black powder coat with anodized fins.
Nominal Size: (with N-type connector) 9.32" H x 8.5" W x 13.32" D,
(235 mm x 216 mm x 336 mm).
Weight: 13 lbs (5.91 kg.).

Oil Dielectric RF Loads & Attenuators
Convection-Cooled, Oil-Dielectric

Oil Dielectric RF Load and Attenuators

Loads from 150W to 1000W
Attenuators from 100W to 500W; 30dB ± 0.5dB
All power ratings are continuous.
Equipped with "QC" Quick-Change RF Connectors

General Specifications:

Ambient Temperature: -40°C to +45°C.

Connector: QC type. Female N supplied. (Model 8251 load includes mounted LC female, and unmounted N female).

Operating Position: Horizontal only.

Finish: Gray powder coat.

Coolant: refined mineral oil or silicone oil as noted.

Attenuators include calibration data taken at 30, 100, 200, 300, 400 and 500 MHz, which is accurate to ± 0.2 dB.)
Dimensions for reference only, and are nominal values with the normally-supplied connector.

Oil-Dielectric Loads
Model	Cont. Power	Frequency @Max.VSWR	Conn. Options	Coolant & Capacity	Dimensions N (M) Conn.	Weight
8135	150W	DC-1GHz@1.1:1 1-2.5 GHz@1.2:1 1-2.5 GHz@1.3:1	QC Type Female N supplied	Refined Mineral Oil 0.1 gal. (0.38 liters)	9.5"Lx6.35"Hx3.94"W 241 x 161 x 100 mm	6 lb (2.7 kg)
8141	250W	DC-1GHz@1.1:1 1-1.8 GHz@1.2:1 1.8-2.5 GHz@1.3:1	QCType Female N supplied	Silicone Oil 0.35 gal. (1.3 liters)	9.57"Lx8.5"Hx5.94"W 243 x 216 x 151 mm	10 lb (4.5 kg)
8201	500W	DC-1GHz@1.1:1 1-2.5 GHz@1.25:1	QC Type FemaleN supplied	Refined Mineral Oil 0.9 gal. (3.42 liters)	16.82"Lx8.5"Hx5.94"W 427 x 216 x 151 mm	21 lb (9.5 kg)
8401	600W	DC-1GHz@1.1:1 1-2.8 GHz@1.2:1 2.8-3 GHz@1.3:1	QC Type Female N supplied	Refined Mineral Oil 0.7 gal (2.65 liters)	16.82"Lx8.5"Hx5.94"W 427 x 216 x 151 mm	20 lb (9.1 kg)
8251	1000W	DC-1GHz@1.1:1 1-2 GHz@1.25:1 2-2.4 GHz@1.3:1	QC Type Female N & LC supplied	Silicone Oil 0.8 gal. (3.02 liters)	17.91"Lx8.5"Hx5.94"W 455 x 216 x 151 mm	25.5 lb (11.5kg)
Oil-Dielectric Loads
8323	100W	30dB±0.5dB DC-500MHz@1.10:1	QC Type Female N supplied	Refined Mineral Oil 0.35 gal. (1.3 liters)	9.5"Lx6.35"Hx3.94"W 263 x 216 x 151 mm	11 lb (5 kg)
8322	200W	30dB±0.5dB DC-500MHz@1.10:1	QC Type Female N supplied	Refined Mineral Oil 0.7 gal. (2.65 liters)	17.5"Lx8.5"Hx5.94"W 445 x 218 x 151 mm	19 lb (9 kg)
8325	500W	30dB±0.5dB DC-500MHz@1.10:1	QC Type Female N supplied	Refined Mineral Oil 0.9 gal. (3.4 liters)	17.5"Lx8.5"Hx5.94"W 445 x 218 x 151 mm	25 lb (11 kg)