Bird Model 43 & 43P Wattmeter
The Bird Model 43 THRULINE® Directional Wattmeter is a thoroughly engineered, portable, insertion-type instrument designed to measure both forward and reflected CW power in coaxial transmission lines. Low VSWR and insertion loss, ± 5% of full scale accuracy. It will accurately measure RF power under any load condition. QC (quick change) type connectors and a full range of plug-in elements provide a wide choice of frequency ranges and power levels giving the Model 43 amazing flexibility. Two extra elements can be stored in the housing, one on each side. The Model 43 is easy to use and simple to service in the field.The Model 43P has the Bird 4300-400 peak reading conversion kit installed. The Model 4300-400 kit is
designed to easily convert any Model 43 to accurately read peak power in AM, SSB
and certain limited pulse applications. Installation of the kit in no way
affects the Model 43’s ability to accurately read CW power. The circuitry
operates from 2 standard 9V alkaline batteries.
Product Specifications:
- Accuracy: ±5% of full scale
- Connector: QC Type (Female N normally supplied)
- Finish: Light gray powder coat
- Frequency Range: 450 kHz to 2.7 GHz (depending on elements)
- Insertion VSWR: with N connectors 1.05 max. to 1000 MHz
- Nominal Size: 6 7/8" H x 5 1/8" W x 3 5/8" D (175 x 130 x 92 mm)
- Power Range: 100 mW to 10 kW using Bird Plug-In Elements
- Weight: 3 lbs. (1.4 kg)
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Bird Model 4431 Wattmeter
Variable RF Tap, Portable Thruline® Wattmeter. The Bird 4431 RF Sampling Wattmeter is the same as the Bird Model 43 Thruline Wattmeter except for an RF signal sampler probe. This RF probe provides a low power sample of the signal being measured and is available at a female BNC connector on the right side of the housing. The signal level can be adjusted with a control knob on the front of the meter. The sampled output can be connected to any RF signal monitoring device such as a frequency counter, spectrum analyzer, or oscilloscope.Product Specifications:
- Accuracy: ±5% of full scale
- Connector: QC Type (Female N normally supplied)
- Finish: Gray powder coat
- Insertion Loss: 0.1 dB max (2-512 MHz), 0.2 dB max (512-1000 MHz)
- Insertion VSWR: with N connectors 1.07 max. to 1000 MHz
- Nominal Size: 6 7/8" H x 5 1/8" W x 3 5/8" D (175 x 130 x 92 mm)
- Power and Frequency Range: 5 kW max. 2 to 30 MHz, 1kW max. 30 to 1000 MHz (Applies only when coupling is less than 30 dB)
- RF Sample Output: Variable -15 to -70 dB from BNC (Female) port
- Weight: 3 1/2 lbs. (1.6 kg)
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Bird Model 4314A 4314B 4314C Wattmeter
PEP, Portable Thruline® Wattmeter. The Bird 4314B Wattmeter is similar to the Bird Model 43 Thruline Wattmeter but also contains electronic circuitry to accurately measure peak envelope power which is present in amplitude modulated signals such as AM broadcast, single sideband and TV video transmitters. The circuitry operates from 2 standard 9V alkaline batteries or an optional AC adaptor.Product Specifications:
- Accuracy: ±5% of full scale CW, ±8 PEP
- Battery: Two 9-Volt alkaline transistor batteries
- Connector: QC Type (Female N normally supplied)
- Finish: Light gray powder coat
- Frequency Range: 450 kHz to 2.7 GHz (depending on elements)
- Insertion VSWR: with N connectors 1.05 max. to 1000 MHz
- Nominal Size: 6 7/8" H x 5 1/8" W x 3 5/8" D (175 x 130 x 92 mm)
- Power Range: 100 mW to 10 kW using Bird Plug-In Elements
- Pulse Parameters: (min.) Pulse width 0.4µs (100-2300 MHz), 1.5µs (26-99 MHz) and 15µs (2-25 MHz); repetition rate 30 pps and duty factor 1 x 10^4min.
- Weight: 3 lbs. (1.4 kg)
Bird Model 4381 4391 4391A Wattmeter Power Analyst
The ruggedly built, multifunction Model 4391A RF Power Analyst features a digital display, microprocessor-based operation, and simplified, push-button control. This wattmeter is well suited to telemetry, two-way communications, avionics and radar, as well as standard radio and television applications.Product Specifications:
- 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
- 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
- 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 corresponding SWR value
- Nominal Size: (includes connectors) 9 9/16”L x 5 7/32”W x 4 5/16”H
- Weight: 5 3/4 lbs
Bird Model APM-16 Wattmeter
The Model APM-16 RF wattmeter is designed to keep pace with the ever growing complexity of digitally-based communication systems. Bird's Model 43 and most other wattcmeters available today were designed to measure power of constant amplitude, sinusoidal waveforms. Modern wireless communication systems can use a variety of digital techniques to combine many voice data channels into a complex, composite RF signal. Measurement of such signals with a conventional wattmeter may yield unacceptable errors. The APM-16 employs active circuitry to deliver accuracy of ± 5% for multiple-access technologies such as CDMA, TDMA, FDMA and other digitally-encoded communication systems.Product Specifications:
- Average-Reading Portable Wattmeter
- Designed especially for RF power measurement in PCS, cellular, ESMR, paging and similar communication systems
- Equally effective for measuring RF power in conventional analog systems
- Uses APM-series plug-in elements to cover a wide range of frequency and power levels. Simple Thruline® style operation for instant forward or reflected power readings
- Interchangeable QC connectors for fast hook-up
- Accuracy: 10° to 35° C ±4% reading, ±1% full scale
- Battery: Internal 9 volt
- Connector: QC type (Female N normally supplied)
- Frequency Range: 2 MHz to 2.3 GHz
- Humidity: 95% ±5% max. (noncondensing)
- Insertion VSWR: (with N connector) 1.05 max. to 1000 MHz
- Meter: 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.
- Nominal Size: 6 7/8" H x 5 1/8" W x 3 5/8" D, (175 mm x 130 mm x 92 mm)
- Peak/Average Ratio: In excess of 10 dB
- Power Range: 1 W to 1000 W
- Setting Time: < 1 second
- Temperature Range: –20° to 50° C operating; –25° to 65° C storage
- Weight: 3 lbs. (1.4 kg)
Bird Model 4410A Wattmeter
The Model 4410A uses the basic principles and “look and feel” of the Model 43 but transforms it into a highly accurate high dynamic range instrument. The mirrored-scale linear range meter has 2 switchable ranges, 0-1 and 0-3. Power is read as a multiple of the value indicated by the pointer, the decimal point location depending upon the range switch position and the factor printed on the plug-in element. Power ranges covered by individual elements are 2 mW to 10 W, 20 mW to 100 W, 200 mW to 1 KW and 2 W to 10 KW, full scale. For most elements, accuracy is +/-5% anywhere above 20% of full scale. The circuitry operates from a standard 9V alkaline battery.Product Specifications:
- Accuracy: ±5% of reading for any reading above 20% of the Power Range selected for FM or CW signals without AM. This accuracy is maintained for a full 37 dB dynamic range with each 4410 Element (except No. 4410-1 200 kHz-535 kHz which is accurate to ±10% of reading, and 4410-15 1.0-1.8 GHz and 4410-16 1.8-2.3 GHz which are accurate to ±8% of reading.)
- Ambient Temperature Range: Elements 4410-1 through -8 and -10 through -16 are temperature compensated for rated accuracy from 0° to 50° C (32° to 122°F) and 4410-20 through -27 from 20° C to 30° C(68° to 86°F)
- Connector: QC Type (Female N normally supplied)
- Frequency Range: 200 kHz to 2.3 GHz CW or FM
- Insertion VSWR: with N Connectors 1.25 max. to 2300 MHz
- Nominal Size: 6 7/8" H x 5 1/8" W x 3 5/8" D, (175 mm x 130 mm x 92 mm) Over-Range Protection: To 120%of nominal full scale (I.e. 12 W, 120 W, 1200 W, or 12,000 W). No damage or degradation to the unit will result, regardless of the Range Selector Switch position.
- Power Range: 2 mW to 10 W, 20 mW to 100 W, 200 mW to 1 kW or 2 W to 10 kW full scale in one single Plug-in Element. Any Bird Series 4410-Element may be used.
- Weight: 3 lbs. (1.4 kg)
Bird Model 4304A Wattmeter
The Model 4304A uses the basic construction of the Model 43 and modifies it with a special broadband element and range switch for general purpose RF power measurement without the hassle of carrying a set of individual elements.Product Specifications:
- Accuracy: 25–100 MHz, ±7% of full scale, using correction charts, 100–512 MHz, ±6 of full scale, no correction needed, 512–1000 MHz, ±7% of full scale, no correction needed.
- Connector: QC Type (Female N normally supplied)
- Finish: Light Gray powder coat
- Frequency Range: 25 MHz to 1.0 GHz
- Insertion Loss: 25–512 MHz, 0.10 dB max with UHF female conn., 512–1000 MHz range, 0.13 dB max
- Insertion VSWR: 25–521 MHz, 1.05 max. (with UHF female conn.), 512–1000 MHz, 1.07 max.
- Nominal Size: 6 7/8" H x 5 1/8" W x 3 5/8" D, (175 mm x 130 mm x 92 mm)
- Power Range: 5, 15, 50, 150, 500 W, with no scale limitations except power limited to 150 W from 800–1000 MHz
- Weight: 3 lbs. (1.36 kg
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Bird OEM QC Connectors
- QC-type "Quick Change" RF Connectors
- QC Connectors are easily changed in the field by removing and replacing four screws.
- Interchangeable
- Many different configurations to choose from.
- Heavy-Duty and Durable.
email: Martin RF Supply
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