Bird - The RF Experts
4391A

PEP-Dual Element, RF Power Analyst


The 4391A, RF Wattmeter 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.

Features
  • Frequency: 450 kHz to 1.2 GHz. Power: 100 Mw – 10 kW
  • 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
Item Name
PEP-Dual Element, Power Analyst
Power Range
100 mW to 10 kW using Bird® Plug-in Elements
Frequency Range
450 kHz to 1.2 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 to 90%), ± 10% (90 to 100%)
Usuable Over Range
to 120% of scale (CW, PEP, SWR and Return Loss)
Modulation
25 to 10,000 Hz (Audio)
Pulse Parameter
Pulse width 0.8 µs (100 to 2700 MHz)
1.5 µs (26 to 99 MHz) and 15 µs (2 to 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
3.50 digit, 0.3 in LED strobed
Finish
Blue vinyl with silver anodized side panels
Dimensions
(L x W x H)
9.56 in x 5.22 in x 4.31 in
243 mm x 158 mm x 110 mm
Weight
5.75 lbs. (2.6 kg)
Elements
Select (2) elements in a 10:1 power ratio (See Compatible Devices below)
Note
Quoted accuracy only when used with other Bird® Products.
compatible devices:
Table 1 - Standard Elements
7/8" Line Section - Standard Elements
Table 2 - Low Power Elements
7/8" Line Section - Low Power Elements
Table 3 - High Frequency Elements
7/8" Line Section - High-Frequency Elements, Entire Table ±8% FS
Table 4 - Low Frequency Elements
7/8" Line Section - Low Frequency Elements
Table 5 - Pulse Power Elements
7/8" Line Section - Pulse Power Elements, Entire Table ±8% FS
Table 6 - Milliwatt Elements
7/8" Line Section - Milliwatt Elements
Table 14 - Directional Coupler Elements
Directional Coupler Elements for QC-Type or 7/8" EIA Line
accessories:
4300A085
Carrying Case - 4391A Power Analyst®, Signal Sampler and Accessories
5A1230
1.2V, NiMH Rechargeable Battery