SEE Pic at bottom of this page
BIRD 4381 Wattmeter The ruggedly built,
multifunction Model 4381 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 or SSB/DSB and symmetrical AM in watts, and peak power for
pulses as narrow as 0.8us.
• Calculates SWR, return loss in dB and %
modulation.
• Stores peak and multi 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: 100mW to 10kW 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: 3 1/2 digit, 0.3” LED strobed
• Modulation Frequency:
25 to 10,000 Hz (audio)
• Pulse Parameters: (min.) Pulse width 0.8us
(100-2700 MHz)
1.5us (26-99 MHz)
15us (2-25 MHz)
Repetition Rate 25 PPS, and Duty Factor 1 x 10-4 min.
• Return
Loss: ±3% dB to correspnding SWR value
• Battery Life: ±8 hours
(rechargeable)
• AC Power: 100-130 60 Hz, 6 W wall wart power
supply
• Connectors: Has UHF QC connectors on it
• Nominal
Size: (includes connectors) 9 9/16”L x 5 7/32”W x 4 5/16”H
•
Weight: 5 3/4 lbs.