Sennheiser ASA-1 antenna splitter and power distro for G3 receivers

Sennheiser ASA1 antenna splitter & power distro


The ASA 1 active antenna splitter has been designed to enable routing of UHF antenna signals to several receivers in a multi- channel system. Up to four diversity receivers may be supplied with signal by only two antennas. The integral RF amplifiers ensure that the ASA 1 does not introduce any additional UHF signal loss.

The ASA 1 incorporates DC distribution to enable simultaneous powering of up to four receivers and two antenna boosters via its BNC sockets. The antenna boosters may be required in order to compensate for cable losses due to long antenna cables. A single NT 1-1 mains unit (to be ordered separately) is required to power the ASA 1, the connected receivers and antenna boosters.

By linking two ASA 1, an 8-channel diversity system can be operated with only two antennas.

Using the GA 3 rack adapter, two ASA 1 or one ASA 1 and one stationary receiver (e.g. EM 100 G3, EM 300 G3 or EM 500 G3) can be mounted into a 19” rack.

ASA 1 antenna splitter:  2 x 1:4 or 1 x 1:8, active
Antenna cable: 8 items, 50 cm, BNC
Frequency range: 500 to 870 MHz at –3 dB
Amplification In A – Out A: 0 ± 1 dB
Amplification In A – Out A1 … A4: 0 ± 1 dB
Amplification In B – Out B1 … B4: 0 ± 1 dB
Impedance: 50 Ω
Operating voltage: 13.8 V DC (with NT 1-1 mains unit)
Total current consumption: max. 2.0 A with 4 receivers and 2 antenna boosters
Supply voltage of antenna boosters at ANT RF IN A and ANT RF IN B: 12 V, 130 mA
Supply voltage of receivers at A1 … A4: 12 V (protected from reverse feed), 350 mA
Relative humidity: 5 to 95%
Operating temperature range: –10°C to +55°C
Storage temperature range: –20°C to +70°C
Dimensions of housing: approx. 212 x 168 x 43 mm
Weight: approx. 1090 g
Type approvals: In compliance with
EMC: EN 301489-1/-9
Radio: EN 300422-1/-2
Safety:  EN 60065