Bird - The RF Experts

Average Reading RF Power Meter

The APM-16 RF Wattmeter is crafted to address the increasing complexity of modern digitally-based communication systems. Unlike the traditional Bird’s Model 43 and other wattmeters, which are optimized for constant amplitude, sinusoidal waveforms, the APM-16 brings enhanced capabilities.

Key Features and Capabilities:
  • Advanced RF Power Measurement: Tailored for use in PCS, cellular, ESMR, paging, and similar communication environments. The APM-16 is also highly effective in conventional analog systems.
  • Accurate Digital Signal Handling: It delivers precise measurements of both analog and complex digital RF signals with an accuracy of +/-5% of reading. This makes it ideal for systems utilizing multiple-access technologies such as CDMA, TDMA, FDMA, and other digitally-encoded communications.
  • Versatile and User-Friendly: The meter uses APM-series plug-in elements to accommodate a broad spectrum of frequency and power levels. Its thruline style operation allows for instant readings of both forward and reflected power.
  • Easy Connectivity: Features interchangeable QC connectors to expedite setup and enhance usability.

The APM-16 is designed to meet the needs of modern communication technologies, offering reliable and precise measurements critical for optimal system performance.

product specifications:
Item No
Item Name
Average Reading Power Meter
Power Range
1 W to 1000 W
Frequency Range
2 MHz to 960 MHz
Insertion VSWR
with N Connector 1.05 max. to 1000 MHz
10°C to 35°C ± 4% reading, ± 1% full scale
-20°C to 50°C ± 6% reading, ± 2% full scale
Peak to Average Ratio
In excess of 10 dB
Setting Time
< 1 second
CDMA, TDMA, FDMA & other digitally modulated signals
QC Type (Female N normally supplied)
95% ± 5% max. (non-condensing)
Internal 9 volt
Operating Temperature
-20 °C to 50 °C (-4 °F to 122 °F)
Storage Temperature
-25 °C to 65 °C (-13 °F to 149 °F)
Meter Scales
Shock mounted, linear scale with expanded scales of 25, 50 and 100 for full scale 1 to 1000 W readings. Mirrored scale includes 5% overrange.
Black Powder Coat
(H x W x D)
6.88 in x 5.13 in x 3.63 in
175 mm x 130 mm x 92 mm
3 lbs. (1.4 kg)
compatible devices:
APM Elements
APM Series, Elements
Carrying Case - Portable Thruline®, Load, Signal Sampler, QC Connectors and 4 Elements
Carrying Case - Thruline® Wattmeter, 5 Elements and 1 Small Load
Carrying Case - 12 Plug-In Elements
9V, Alkaline Battery