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| BR-T1 / BR-J1 |
Repeater / Extender

BR-T1 / BR-J1


Demodulator (Receiver):
BR-T1 supports Digital Terrestrial DVB-T Receptions (5/6/7/8 MHz bandwidth) and amateur HAM DVB-T TV reception (2/3/4 MHz bandwidth)
BR-J1 supports Digital Terrestrial ISDB-T/ISDB-Tb Receptions (6/7 MHz bandwidth)

Modulator (Transmitter):
Direct digital conversion to 50~950MHz and 1200~1350 MHz for excellent signal quality
BR-T1 supports configurable bandwidth from 2MHz to 8 MHz.
BR-J1 supports configurable bandwidth 6/7/8 MHz.

Channel Adaptation:
The input and out channels are totally independent. The new (Tx) channel’s frequency, bandwidth, code rate, guard interval, FFT, constellation can be totally different from the original (Rx) one’s.
BuiltDirect digital conversion to 50~950MHz and 1200~1350 MHz for excellent signal quality
If the input channel data rate is less than the output, auto null-packet insertion will be done in the modulator.
If the input channel data rate is larger, setting PID filter properly to filter out unwanted packets may avoid data overflow.
PCR re-stamp mechanism is supported to keep the correctness of PCR when PID’s filtered or null packets inserted.


• Hardware modulator and demodulator support EN 300-744 DVB-T /ARIB STD-B31 ISDB-T/ABNT NBR 15601 ISDB-Tb reception and retransmission.
• TV RF signal is demodulated to a transport stream (TS), and then modulated to a new TV RF signal with fully hardware digital processing without any MER loss or any noise addition.
• Built-in 31-way PID filters, Null packet insertion and PCR re-stamp.
• Infinite digital TV signal extension can be achieved with BR-x1.
• BR-T1 supports EN 300-744 DVB-T while BR-J1 supports ARIB STD-B31 ISDB-T/ABNT NBR 15601 ISDB-Tb.


DVB-T/ISDB-T digital TV signal repeater/extender
DVB-T/ISDB-T closed circuit TV gap filler
• Air to Cable/Cable to Air/Air to Air/Cable to Cable TV signal repeater

Parameter Value
RF connector Tx: 75-Ω F (female) connecter
Rx: 75-Ω IEC (female) connecter
Bandwidth Transmitter BR-T1 DVB-T
2/3/4/5/6/7/8 MHz
6/7/8 MHz
Receiver BR-T1 DVB-T
2/3/4 MHz or
5/6/7/8MHz *1
6/7 MHz
FFT 2K, 4K, 8K
Constellation 64QAM/16QAM/QPSK
Code rate 1/2, 2/3, 3/4, 5/6, 7/8
Guard interval 1/4, 1/8, 1/16 or 1/32
Frequency range Transmitter
50~950MHz and 1200~1350MHz
step size 1KHz
Receiver 50~950MHz, step size 1KHz
RF Output Level -4 dBm (104 dBuV) @ 50~950MHz
BR-J1:-45dBm @ 1.2G band *2
BR-T1:-18dBm @ 1.2G band
Digital Attenuator Range:+6/-25dB*3 , Step size 1dB
MER 28~33 dB Typically @50~950MHz
25~30 dB Typically @1200~1350MHz
Spectrum Shoulder (Adjacent channel) 45dB
Phase noise <-92dBc @ 10kHz
Carrier Suppression >42dB
USB port USB 2.0 or USB 1.1
Power 5V DC 390mA
Dimensions (LxWxH) 75x 30 x 15 mm
*1 : Bandwidth 2/3/4 MHz or 5/6/7/8 MHz are selected by a jumper.
*2 :BR-101E/J U-band low pass filter is designed @950MHz, so 1.2G band power is filtered to such a low level.
*3:There could be MER loss in high gain/attenuation level.

Genral Spec.