محل منبع:
چین
نام تجاری:
SETON
گواهی:
CE, ISO, RoHS
شماره مدل:
ST-C12A
Model: ST-C12A
One Dish, Two Receivers – Independent Tuning, No Interference
For users who need to connect multiple receivers to a single dish, traditional solutions require external switches – adding cost and introducing additional signal loss. The C-Band Twin LNBF ST-C12A is exactly the solution.
This product features a dual independent output design with built-in dual-polarization reception channels. One LNBF provides signals for two independent receivers, allowing both receivers to watch programs on different polarizations simultaneously – no external switches needed, no interference.
Key Advantages:
One dish, two receivers. Different polarizations, simultaneous viewing. No switches needed – plug and play.
| Dual Independent Outputs |
Dual Polarization Support |
|---|---|
| Two independent F-type output ports Connect to two satellite receivers simultaneously No external switches needed No signal interference between ports |
Supports both polarization types: Linear: Vertical (V) / Horizontal (H) Circular: LHCP / RHCP 13V/18V voltage switching control |
| Ultra-Low Noise Temperature |
High & Stable Gain |
|---|---|
| Noise Temperature: 12°K (Max.) Equivalent noise figure below 0.5dB Excellent weak signal reception capability |
Conversion Gain: 65dB (Typ.) Output P1dB: ≥+5dBm Gain Flatness: ±0.75dB/36MHz Sufficient signal strength for stable picture quality |
| Standard C-Band Coverage |
Traditional LO Design |
|---|---|
| Input Frequency: 3.7 ~ 4.2 GHz Full standard C-band coverage Output Frequency: 950 ~ 1450 MHz LO Frequency: 5.15 GHz |
Traditional 5.15GHz LO design LO Stability: ±2MHz (-40℃~+70℃) Image Rejection: ≥45dB Mature, stable, and highly compatible |
| Cost-Effective Multi-Room Solution |
Standard Interfaces |
|---|---|
| Home: Main bedroom + guest room watch different programs Hotel: One dish serves two rooms PVR: Watch on one channel, record on another Community: Small CATV headend systems |
Input Interface: WC-229 Waveguide Output Interface: Dual F-type Female (75Ω) Power Supply: 13~24V / ≤150mA Plug and play, easy installation |
| Specification | Value |
|---|---|
| Input Frequency | 3.7-4.2GHz |
| L.O. Frequency | 5.15GHz |
| LO Frequency Stability | ±2MHz(-40℃~+70℃) |
| Local Leakage at Input | -45dBm |
| Output Frequency | 950-1450MHz |
| Conversion Gain | 65dB(Typ.) |
| Gain Flatness | ±0.75dB/36MHz |
| Output VSWR | 2.5:1 |
| Output Spurious | -60dBm(Max.) |
| Noise Figure | 12°K(Max.) |
| Power Supply | 13~24V/150mA(Max.) |
| Waveguide | WC-229 |
| Switching Voltage | 13V/18V |
| Image Rejection | 45dB(Min.) |
| Output Power | +5dBm(at 1dB compression) |
| Output Connector | Type F Female |
| Challenge | How This LNBF Solves It |
|---|---|
| Two TVs at home – don't want channel conflicts |
Dual independent output design – receivers tune independently. Watch news in the master bedroom, sports in the guest room – no interference. |
| Want to watch one channel while recording another |
Output A to TV watching, Output B to PVR recording – supports simultaneous viewing and recording of different polarizations. |
| Hotel/Apartment multi-room – complex wiring, high cost |
One dish serves two rooms – no need for separate dishes per room. Dramatically reduces installation costs. |
| Traditional setup requires external switches – adds cost and signal loss |
No external switches needed – two output ports connect directly to receivers. Saves equipment cost, reduces signal loss. |
| Extreme temperatures cause LO drift and signal instability |
LO Stability ±2MHz (-40℃~+70℃) – from bitter cold to scorching heat, signal remains stable. |
| Poor picture quality in weak signal environments |
Noise temperature as low as 12°K (Max.) – equivalent noise figure below 0.5dB. Excellent weak signal reception. |
| Traditional Solution | Twin LNBF Solution |
|---|---|
| Requires external switch (DiSEqC/4x1, etc.) | No external switch needed – direct connection to receivers |
| Switch introduces additional signal loss (typically 1-2dB) | No additional loss – higher signal quality |
| More components = more potential failure points | Fewer components – higher reliability |
| Requires additional power or control lines | Standard 13V/18V power – plug and play |
| Two receivers may interfere with each other | Independent tuning – no interference |
| Application | Description |
|---|---|
| Multi-Room Home Installation |
One dish serves living room and bedroom – family members watch their favorite programs |
| PVR Setup |
Output A → Main TV (watching), Output B → PVR (recording different channel) |
| Hotel / Commercial Applications |
One dish serves two adjacent rooms – reduces installation costs |
| Small CATV Headends |
Ideal for community antenna systems, schools, and small cable headends |
| Community Antenna Systems |
Multiple households share one dish – cost-effective |
Q: What is a Twin LNBF?
A: A Twin LNBF has two independent receiving channels sharing a single feedhorn and dish. It features two output ports that can connect to two independent satellite receivers simultaneously. Both receivers can watch programs on different polarizations without interfering with each other.
Q: Do I need an external switch when using a Twin LNBF?
A: No. This is one of the key advantages of a Twin LNBF. Traditional solutions require external DiSEqC switches to distribute signals, but a Twin LNBF provides two direct independent outputs – plug and play, no additional equipment needed.
Q: Can two receivers watch programs on different polarizations simultaneously?
A: Yes. The Twin LNBF has built-in dual polarization channels (V/H or LHCP/RHCP). One receiver can select vertical polarization while the other selects horizontal polarization – different programs, different polarizations, no interference.
Q: What does 12°K noise temperature mean in practice?
A: Noise temperature measures the LNB's self-generated noise. 12°K is an excellent level, equivalent to a noise figure below 0.5dB. This means the LNB generates very little self-noise and can receive very weak satellite signals, ensuring clear picture quality.
Q: Is this LNB suitable for PVR (recording) applications?
A: Very suitable. Connect Output A to your main TV for watching, and Output B to your PVR for recording. With two independent outputs, you can watch and record programs on different polarizations simultaneously.
Q: What is the operating temperature range?
A: -40℃ to +70℃ – suitable for extreme climates, from bitter cold winters to scorching hot summers.
Q: What type of output connectors does it have?
A: Two F-type female connectors (75Ω). Use standard coaxial cable. Compatible with the vast majority of satellite receivers on the market.
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