The BT20L both versions, is a professional repeater with high gain 60-
65dB and automatic level control (ALC). very reliable and efficient, able
to cover up to 1200 square meters on standard version, with M splitter
optional and adequate project can reach 2000-3000 square meters of
indoor coverage.
It operates on GSM 900MHz wide band for voice and GPftS.'EGDE data
(tow speed); typical channel capacity up fo 30*40 simultaneous com-
munications horn outside building where signal is well operative to inside
where poor or absent
The STANDARD or single provider version uses an external' high gain
directional antenna 20-30: radiation angle, that must be directed to pro-
vidercell.
The OM version also called all providers version uses external omnidi-
rectional antenna operative with limited gain but it not need any direction
set (360•' radiation), usable only with high level root signal