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Bird 4391A THRULINE® RF Directional Wattmeters
Multifunction RF Power Analyst
The ruggedly built, multifunction Bird
4391A RF POWER ANALYST® features a digital display, microprocessor-based
operation, and simplified, push-button control. This wattmeter is well
suited to C3, telemetry, two-way communications, avionics and radar, as
well as standard radio and television applications.
Features:
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Frequency: 0.45 to 2700 MHz. Power: 100
mW to 10 kW with 20% over-range.
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Reads forward and reflected CW or FM
power in watts or dBm, Peak Envelope Power of SSB/DSB and symmetrical
AM in watts, and peak power for pulses as narrow as 0.8 μs.
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Calculates SWR, return loss in dB and %
modulation
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Stores peak and null readings to
facilitate adjustment of maximum and minimum signal levels.
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Shock-resistant keyboard and range
switches. RFI protection.
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Built-in international power
supply/charger.
| Specifications |
| Power
Range: |
100 mW to 10 kW using Bird Plug-in
Elements* |
| Frequency
Range: |
450
kHz to 2.7 GHz |
| Insertion
VSWR: |
with N Connectors 1.05 max. to 1000
MHz |
| Accuracy: |
Power
Readings: |
±5% of full scale CW, ±8% PEP; VSWR:
±10% of reading % |
| Modulation: |
(CW power 1/3 or more of full scale)
±5% (0-90%), ±10% (90-100%) |
| Usable
Over-range: |
to 120% of scale (CW, PEP, SWR and
Return Loss) |
| Sampling
Rate: |
2
to 3 readings per second |
| Display: |
31/2
digit, 0.3" LED strobed |
| Modulation
Frequency: |
25
to 10,000 Hz (Audio) |
| Pulse
Parameters: |
(min.) Pulse width 0.8 µs (100-2700
MHz), 1.5 µs (26-99 MHz) and 15 µs (2-25 MHz); Repetition Rate
25 PPS, and Duty Factor 1 x 10-4 min. |
| Return
Loss: |
±0.3 dB to corresponding SWR value |
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