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    Digital Display RF Power Meter
    Bird 4391A RF Power Analyst

    PEP-Dual Element, RF Power Analyst

    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.

    • 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
    • Shock-resistant keyboard and range switches. RFI protection.
    • Built-in international power supply/charger

    product specifications:

    Item No
    4391A PEP-Dual Element, Power Analyst

    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

    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%)

    Usuable Over Range
    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

    QC Type (Female N normally supplied)

    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

    3-1/2 digit, 0.3" LED strobed

    Blue Vinyl with Silver Anodized Side Panels

    (L x W x H)
    9-9/16" x 5-7/32" x 4-5/16"
    243 x 158 x 110 mm
    5-3/4 lbs. (2.6 kg)

    Select (2) elements in a 10:1 power ratio (See Compatible Devices below)

    Quoted accuracy only when used with other Bird® Products.