EPCOM Certified Products
We test, inspect and restore all EPCOM products to working conditions.
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Product Specifications
A basic system is integrated by:
1.- Bi-directional amplifier.
2.- Donor antenna (external) which picks up the signal coming from the base radio.
3.- Service Antenna (internal) to distribute the signal inside or to the required area.
4.- A pair of coaxial cables to interconnect the antennas to the amplifier
If you wish to distribute the signal in more than one area, 2 or more antennas are required; this is done using power dividers and separators.
It is recommended to integrate protectors against atmospheric discharges.
The best performance and scope of the amplifiers both inside and outside is given when the antenna points towards the radio base.
On average, an increase of 10 dB (either in the amplifier, antennas or base radio signal) represents an increase in coverage of 2.5 to 3 times.
Currently, cellular telephony operates in the following ranges:
a) 824-894 MHz, called "850 MHz Band".
b) 1850-1990 MHz, known as "1900 MHz Band" or "PCS Band".
c) 1710-2155 MHz, AWS band for 4G and Nextel Evolution. Nextel operates in the 806-866 MHz
segment, sharing this range with the 800 MHz trunked systems.
The covered area depends on several factors:
a) The signal strength outside, at a higher level, greater coverage.
b) The amplifier's gain.
c) The gain of the internal and external antennas.
d) The loss of cables, power dividers, and separators.
e) The number of simultaneous calls.
Because the system operates in both directions (Uplink / Downlink) and retransmits on the same frequency, there is a possibility that the signal from the external antenna reaches the internal antenna and vice versa. This causes equipment lock or a gain reduction.
To avoid the above, ensure a minimum separation between antennas of 15 to 30 meters.
The most important parameter in the installation of an amplifier is the total gain of the system.
These amplifiers are designed under impedance of 50 Ohm, so you should use similar cable, recommending Belden 9913, Andrew's CNT-400, Viakon RFlash, etc. or any of the RG-8 family, avoiding 75 Ohm and RG-58 type cables, as well as UHF type connectors and adapters (PL-259).
Includes AC / DC adapter. They do not include antennas, cables, and additional accessories.
All amplifiers have N-Female connectors.
*Ask for delivery time
*2 Year Warranty.