Maintenance
21
Specifications
Frequency Range
8730A
8731
8732A
8738A
dc - 1000 MHz
1 kHz - 1000 MHz
dc – 45 MHz
1 kHz – 1000 MHz
Power Rating
All models except 8732A
8732A
10 kW average
Depends on flow rate. See table below.
Max
Power Min Flow at
(8732A)
60º C (140º F)
Thermoswitch
Thermoswitch
P/N
Open Temp
10 kW
6 gal. / min.
(23 L / min.)
N/A
N/A
8 kW
4 gal. / min.
(15 L / min.)
2450-095-1
72º C
4 kW
1.1 gal. / min
(4 L / min.)
2450-095-3
79º C
5 kW contin.
2.6 gal. / min.
10 kW pulse
(10 L / min.)
2450-095-3
79º C
Mode
CW, AM, FM, SSB, TV and certain pulse types
Impedance
50 ohms nominal
VSWR
1.10 max.
Connectors
8730A
1-5/8" EIA Flanged
8731
3-1/8" EIA Flanged
8732A
7/16 Jack, IEC Type 169-4
8738A
3-1/8" Unflanged
Operating Position
Any
Coolant
For operation at 1kHz or lower, use only distilled water as
the coolant.
For operation at greater than 1kHz use distilled or potable
water.
*
Coolant Connections
3/4" standard hose thread
Temperature Range
5 to 60 °C (41 to 140°F)
Flow Rate, Min
4 gal./min (15.2 L/min) @ 5 °C (41 °F)
6 gal./min (22.7 L/min) @ 60 °C (140 °F)
Flow Rate, Max.
12 gal./min (45.4 L/min)
Dimensions, Nominal
2.5” diameter x 12” long (64 x 305 mm)
Weight, Nominal
8 lb. (3.6 kg)
* Potable Water: Standards for potable water have been established by the U.S. Public Health Service
at a maximum of 500 ppm of total dissolved solids (ppm - parts per million or 1 mg per liter). Hardness
of water (content of calcium and magnesium salts) should be less than 75 ppm. If the quality of the
available water supply is doubtful or the mineral content is questionable, use distilled water.
