Stabilizing the output level with AGC

Stabilizing the input level with AGC

Dependence the output level on the cable losses

Dependence SNR of the remote station on the cable losses at the base station

Dependence SNR of the base station on the cable losses at the base station



WISTEC amplifier is designed specially for use with 2.4 GHz Direct Sequence and Frequency Hopping Spread Spectrum radio products. It's the highest performance wireless LAN amplifier available today.

This waterproof bi-directional pole mounted amplifier greatly increases operating range by compensating for various cable losses, increases receive range by extremely low own noise level (2.8db) and very high sensitivity, increases transmit range because the high output lever.
AGC (automatic gain control) circuit automatically adjusts the amplifier's gain to provide a constant output/input power in both transmit/receive modes regardless of cable length or type.

The very important parameter determined with 802.11 standard is a level of non-linear distortions (main/side lobe) which in its turn depend greatly on the temperature. The depth of the regulation of AGC of WISTEC amplifier is so effective that allows to keep the signal level deviation within +/- 0.5dB while a temperature range is -50…+50C.
The ratio main/side lobe is also within the limits allowed by the 802.11 standard.

WISTEC amplifier is powered through the antenna transmission cable using the DC Power Injector, which is located indoor near the radio modem, simplifying installation. Current-sensing circuits provide reliable remote amplifier diagnostics via two indicator LEDs.

- Allows wireless station to work with a great separation between indoor radio and outdoor antenna;
- Automatic transmit/receive gain control;
- Built-in filter allowing co-location with different RF systems;
- Weatherproof Cast Aluminum Case with UV-stable finish;
- Great temperature operational range;
- Atmosphere electricity and lighting protector;
- Powered over the single RF cable;
- Power and Transmit LED indicators on DC Injector;
- Mountable on pole/wall;
- 2 Year warranty.

Each WISTEC amplifier kit includes:
- Amplifier
- DC Power Injector
- Power Supply
- Mounting brackets
- U-bolt

Technical Specifications of Amplifier

-Operating Mode: Bi-directional, half-duplex. Senses RF carrier from transmitter and automatically switches from receive to transmit mode.
-Automatic receive and transmit gain control.
- Connectors: N-female
-Indicators: TX and RX LEDs on the DC power injector
-Lightning Protection: Direct DC ground at antenna connector
Operating Range, MHz 2401-2485
Input/Output impedance, Ohm 50
Switching Power, mW 0.2-0.4
Switching Delay Time, mks 0.5-0.8

Transmitter Amplifier
Automatic Gain Control  
Transmit Gain, dB 28
Frequency Response, dB over operating range +\- 0.5
Transmit Output Power, mW AM2.4-OUT1000
Input RF Power, mW 0,5-100

Receiver Low Noise Amplifier
Automatic Gain Control  
Built-in Filter  
Receive Gain, dB min-max* 17-30
Frequency Response, dB over operating range +\- 0.5
Noise Figure, dB 2.8
* - depends on the cable losses

Power Supply Specification
Input Voltage 220 VAC 50Hz
Output Voltage/Power 12 VDC/10W

DC Power Injector
Radio Modem Connector N-type female
Amplifier Connector N-type female
12V DC Power Input Connector Proprietary

Operating Temperature, °C -50 to +50
Power 12 to 14V DC @ 900 peak mA, 800 mA avg.  
Mounting Bracket for amplifier
Accommodates pole/mast diameters from 3/4" to 3"
Dimensions, mm 195x155x27
Kit Weight, kg 0.9