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Bird 4391A RF Power Analyst
Elgin, IL, USA


Electronic Test Equipment
(CW power 1/3 or more of full scale) 5% (0-90%), 10% (90-100%)
Condition info:
Subcategory 2:
Power meters


Product Overview:
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.
Frequency: 0.45 to 2700 MHz. Power: 100 mW to 10 kW with 20% over-range
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 ?s
Calculates SWR, return loss in dB and % modulation
Stores peak and null readings to facilitate adjustment of maximum and minimum signal levels
Shock-resistant keyboard and range switches. RFI protection
Built-in international power supply/charger
Power Range 100 mW to 10 kW using Bird Plug-in Elements
Frequency Range 450 kHz - 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 Hz - 10,000 Hz (Audio)
Pulse Parameters (min.) Pulse width 0.8 µs (100 MHz - 2700MHz)
1.5 µs (26 MHz - 99 MHz)
15 µs (2 MHz - 25 MHz)
Repetition Rate 25 PPS, and Duty Factor 1 x 10-4 min.
Return Loss 0.3 dB to corresponding SWR value