MODEL 70
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Precise Alignment Without Guesswork
PLC Design— Specifically designed for use with powerline carrier equipment (10kHz to 500kHz).
Dual Display— Two meters display forward power in Watts and dBm AND computed percent reflected power and SWR simultaneously.
Fully Automatic— Internal computing circuits measure percent reflected power and SWR independent of the magnitude of forward power.
Convenient Power Scales— Four Power ranges: 5 Watts, 15 Watts, 50 Watts and 150 Watts full scale.
High Sensitivity— Full SWR computing with forward powers as low as 0.1 Watt.
Built-in Power Sensor— For 10kHz to 500kHz measurements.
Built-in Load— 50 Ohm, 50 Watt dummy load.
Built-in Line Sampler— Directional line voltage sample at -20dBm level. For use with selective voltmeter in interference or multiple signal environments.
Rugged Case— Fully dust sealed case with shock mounted taut-band meter meter movements.
Micro Power Circuits— At least one years life on the easily obtainable 9 Volt internal batteries.
Battery Saver— Closing lid turns the instrument off.
Technical Specifications
| R.F. Power | Front Panel Switches |
| Ranges: | 0-5 Watts (+25 to 37 dBm) | Range: | Four Position rotary type |
| 0-15 Watts
(+30 to +42 dBm) 0-50 Watts (+35 to +47 dBm) |
On-Off: | Two position toggle switch. Closing cover pushes switch to OFF position. | |
| 0-150 Watts (+40 to 52 dBm) | Voltage Sample: | Two position toggle switch - Forward, Reflected. | |
| Scales: | 0-5 W and
0-15 W -10 to +2 dB (50 Ohm Reference) |
Battery Check: | Push Button |
| Size | 9 inches x 6 inches x 8 1/2 inches high | ||
| Accuracy: | ±5% of full scale power into a 50 Ohm load | Weight | 5 pounds (less connecting cables) |
| Frequency: | 10kHz to 500kHz | ||
| Response: | +-0.1 dB over full frequency range | ||
| % Reflected | Power and SWR | Environment | |
| Ranges: | 0-100% Reflected Power 1.0-5.0 Calibrated SWR |
Moisture: | Splash proof with case
closed |
| Accuracy: | ± 10% at SWR = 3.0 for
power levels between -10dB and +2dB on any power range ± 5% at SWR = 3 for a -1dB power level, any power range. |
Dust and Dirt: | Sealed when closed. All
internal switch component are sealed against intrusion by
dust when in use. |
| Internal Batteries | 9 Volt transistor battery
(two required) NEDA 1604 (Eveready Type 216) Expected Life: > 2 years in normal use. |
Temperature: | Storage: -40° to +150ºF Use: -10° to +120°F Calibration Temp.: +75°F |
| Connectors | BNC (4) - input, output, voltage sample and 50 Ohm dummy load. | Cables Provided | Qty 2 - 96
Inch BNC to BNC, 50 Ohm (RG58) Qty 2 - BNC to Banana Plug Adapters Qty 4 - Banana Plug to Alligator Clip Adapters |