Digital Terrestrial TV MMDS 500W Outdoor Digital TV Transmitter for
Wireless Coverage TV Broadcasting System
Multi-channel Microware Distribution System (MMDS) is also called
wireless cable or open-to -air cable. Internationally, MMDS
normally uses 2.1- 2.3GHz, 2.3-2.5GHz or 2.5-2.7GHz, 2.7-2.9GHz
frequency spans, and the most commonly used span is 2.5-2.7GHz.
MMDS is a mature and stable TV distribution and transmission
system, which makes it an important way of transmitting TV programs
to households and CATV head-ends.
HOORAYVISION’s MMDS broadband transmitter HTM-500D has stable
performance, with complete range of functionalities and great
variety, thus is able to suit most of the needs from both regional
and overseas customers.
The 500W MMDS outdoor digital transmitter is a kind of wireless
digital TV transmission facility working on S band (2.0-2.9GHz). It
supports PAL/SECAM/NTSC standards and multiple digital modulation
modes like DVB-S/S2, DVB-T/T2, DVB-C, QAM, ISDB-T/TB and etc. Its AGC/ALC function guaranteed the
reliable operation of the equipment by maintain constant power
output of transmitter. It also has auto-alarming and
lightning-proof functions. Its optional GSM message module can tell
you the parameters of output power, working voltage and AGC, can
monitor the abnormal values real-time. As the advantages mentioned
above, this equipment can widely apply to point to point and point
to multi-point transmission and signal coverage. It can be used as
digital signal coverage system. Besides, it is also to trunk
transmission of TV signal source.
All its features make it outstanding in operational reliability and
The design of outdoor proof and all-in-one machine makes waveguide
unneeded, system investment economic and the effective coverage and
transmission range increased.
With superliner design of power amplifier, transmitting power has
been increased and unlinear distortion has been effectively
With natural heat dissipation or forced air cooling design,
equipment operational reliability can be improved.
With door design, signal debugging and equipment maintenance can be
simply carried out.
With simple debugging procedure, signal opening can be achieved
without specialized instruments.
With multiple choices in power level and local frequency.
With extended interface for remote control and GSM message
auto-alarm system (optional), concentrated monitoring can be
|RF Output Power(P-P)||500W|
|RF Output Frequency|
(frequency band carrier signal takes could be set arbitrarily)
|Max Bandwidth: within 200MHZ|
|RF Output Interface||50Ω/N connector|
|Return Loss: 20dB|
|RF Frequency Response||BW: 200MHz|
|Passband Fluctuation: ≤2.0dB|
|Any Within 10MHz: ≤1.0dB|
|Group Delay Characteristics||≤40nsec|
|Local Frequency||2033MHz (or specified by user)|
|Local Oscillator Phase Noise||NΦ≤-100dBc/Hz@10KHz|
|IF Input Level||-25~-10dBm|
|IF Input Frequency||467~667MHz (or specified by user)|
|IF Input Interface||75Ω/F connector|
|Return Loss: 15dB|
|In-band Spur Restraint||-60dBc (relative signal level)|
|Automatic Level Control||20dB|
|Environmental Conditions||Working Temperature Range: -20°C~+45°C|
|Humidity: no condensation|
|Relative Humidity: 0~95% non-saturation|
|Working Voltage||AC 220V±10%,50/60Hz|
|Power Consumption: Depending on power levels|