PM-2458, Praxsym T-Meter Broadband Wireless Power Meter for 2.4GHz, 5.3GHz, 5.8GHz Frequency Bands

Manufacturer: Praxsym
Part #
MFG Part # PM-2458
Special Order
Availability In Stock
Price $1,545.00
Praxsym Broadband Wireless Power Meter for 2.4GHz, 5.3GHz, 5.8GHz
Product Info
The heart of the unit is an RF assembly built around a proprietary bi-directional RF power sensor designed specifically to cover the 2.4 GHz, 5.3 GHz, and 5.8 GHz bands. The sensor consists of series connected couplers; one senses forward signal strength - the other senses reflected signal strength. Twin leveling-loop circuits keep a pair of detection diodes at fixed potentials, maintaining conduction in each diode's square-law region. The design minimizes modulation error while maintaining a fast response time. Readings from both detection circuits are converted by a microcontroller to generate the display readings. Each frequency band has been independently calibrated at the factory over the -10 to 50 degrees C temperature range and the data stored in the microcontroller's integrated EEPROM.

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Frequency Range

2.4-2.4835 GHz, 5.150-5.350 GHz, 5.4-5.7 GHz, 5.725-5.850 GHz

Forward Power Measurement Range

0-20 dBm (no-inline attenuation)
10-30 dBm (10 dB inline attenuator)
20-40 dBm (20 dB inline attenuator)
30-50 dBm (30 dB inline attenuator)

Reflected Power Measurement Range

-20 to 17 dBm (no-inline attenuation)
-10 to 27 dBm (10 dB inline attenuator)
0 to 37 dBm (20 dB inline attenuator)
10 to 47 dBm (30 dB inline attenuator)

Power Measurement Accuracy

+/- 0.5 dBm (with 1.2:1 LOAD)

Insertion Loss

0.4 dBm @ 2.4 GHz 0.75 dBm @ 5.8 GHz

VSWR Measurement Range

1.2:1 to 6.0:1 (2.4 GHz)
1.2:1 to 6.0:1 (5.3 GHz)
1.2:1 to 6.0:1 (5.8 GHz)


Temperature Range

-10 to 50 C


0 to 95% non-considering


0 to 1500 feet


RF Connectors

N-type Female (input, output)


2 lines by 8 characters, LCD not illuminated


Five Keys


Black ABS

Power Source

2 AA alkaline batteries


4.9" x 2.7"


10 ounces
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Add'l Info


  • Measure Forward Power, Reflected Power & VSWR
  • Use in 2.4GHz, 5.3GHz and 5.8GHz license-exempt bands
  • Simple operation
  • Small size (4.9" x 2.7", easily stores in your pocket or toolbox)
  • Temperature range -10C to 50C
  • Humidity 0 to 95% RH non-condensing 
  • Altitude 0 to 10,000 feet
  • Weight 10 oz.

Without in-line attenuation the Meter will directly measure RF signals from 0dBm to +20dBm. With a 10dB inline attenuator, readings are scaled up to a range of +10 dBm to +30 dBm. With a 20 dB attenuator, readings are scaled from +20dbm to +40dBm. With a 30dB attenuator, readings are scaled from +30dbm to +50 dBm.

The Meter captures peak power over a 200mSec window so that it is ideal to measure peak power of 802.11 CDMA packetized communications. The peak detection circuit will capture a transmission as short as 500 microseconds and hold the measurement for one second.

Tactile switches are integral to the main electronics board and sealed from the elements by a weather-resistant overlay.

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