Bird 4391A RF Power Analyst AVG/PEP Dual Element
The Model 4391A is a Rugged RF Power Analyst that monitors Peak Pulse Power, Peak Envelope Power, or CW Power during normal equipment operations in the forward or reflected direction. Designed for air navigational aids DME, ATC and other pulsed RF systems such as telemetry, radar, command and control, etc. They need no attenuators, directional couplers or charts. Measures Peak and Average Power.
- Frequency: 0.45 - 2700 MHz. Power: 100 Mw – 10 kW
- Requires Optional Elements for frequency and power ranges
- Reads forward and reflected CW or FM power in watts or dBm
- Peak Envelope Power of SSB/DSB and symmetrical AM in watts
- Calculates SWR, return loss in dB and 5 modulation
- Supports PEP and pulsed power measurements for systems like DMR, TDMA, CDMA, DME, ATC, telemetry, and radar—when operating within supported pulse widths, repetition rates, and with the appropriate plug-in element. Built to handle modulated environments that require precision and repeatability, without external couplers or conversion charts.
- Shock-resistant keyboard and range switches. RFI protection.
- Built-in international power supply/charger
product specifications:
Item No: 4391A PEP-Dual Element, Power Analyst
The Bird 4391A RF Power Analyst supports PEP and pulsed power measurements for systems like DME, ATC, telemetry, and radar—when operating within supported pulse widths, repetition rates, and with the appropriate plug-in element. Built to handle modulated environments that require precision and repeatability, without external couplers or conversion charts.
Power Range 100 mW to 10 kW using Bird® Plug-in Elements
Frequency Range 450 kHz - 2.7 GHz (requires optional elements)
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 Rang to 120% of scale (CW, PEP, SWR and Return Loss)
Modulation: 25 to 10,000 Hz (Audio)
Pulse Parameter
(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 Cycle 1 x 10¯ 4
Connectors: QC Type (Female N normally supplied)
Power: 100-130/200-260 V, 50/60 Hz, 6 W
Battery Life: 8 hours (rechargeable)
Sampling Rate: 2 to 3 readings per second
Return Loss: ± 0.3 dB to corresponding SWR value
Display: 3-1/2 digit, 0.3" LED strobed
Finish:" Blue Vinyl with Silver Anodized Side Panels
Dimensions: (L x W x H) 9-9/16" x 5-7/32" x 4-5/16" (243 x 158 x 110 mm)
Weight: 5-3/4 lbs. (2.6 kg)
Elements: Select (2) elements in a 10:1 power ratio
Note: Quoted accuracy only when used with other Bird® Products.