محل منبع:
چین
نام تجاری:
SETON
گواهی:
CE, ISO, ROHS, POP, REACH
شماره مدل:
ST-K21WN
Model: ST-K21WN
The Simplest and Most Economical Solution for Single TV Setups
For single TV users, a simple, economical, and highly compatible LNB is the ideal choice. The Ku-Band Universal Single PLL LNBF (Model ST-K21WN) is exactly that solution.
This product covers the full 10.7~12.75GHz Ku-band input frequency range with dual built-in local oscillators (9.75/10.6GHz), enabling automatic switching between low-band and high-band. Using PLL (Phase-Locked Loop) technology, the LO is stable and precise, making it an ideal entry-level choice for home satellite TV reception.
Key Advantages:
One LNB covers the entire Ku-band. Simple, economical, and clear picture quality.
| Full Band Coverage |
Ultra-Low Noise (High-Band) |
| Input Frequency: 10.7~12.75 GHz Low-Band: 10.7~11.7 GHz High-Band: 11.7~12.75 GHz One LNBF covers the entire Ku-band |
High-Band Noise Figure: 0.2dB (Typ.) Low-Band Noise Figure: ≤1.0dB (Max.) Excellent weak signal reception in high-band |
| PLL Precise Frequency Stability |
High Conversion Gain |
| LO Frequencies: 9.75 / 10.6 GHz Initial Accuracy: ±0.5 MHz Temperature Drift: ±0.75 MHz (-30~+60℃) Phase Noise: -90dBc/Hz @ 100kHz |
Conversion Gain: ≥58dB Ensures sufficient signal strength to the receiver Delivers stable reception |
| Universal Control Compatibility |
Cost-Effective |
| Vertical Polarization: 11.0~14.5V Horizontal Polarization: 16.0~20.0V Band Switching: 22±4KHz Works with all modern receivers |
The simplest and most economical solution for single TV setups No complex cabling required Plug-and-play, easy installation |
| ITEM | SPECIFICATION | UNIT |
|---|---|---|
| Low Band I/P Frequency Range | 10.7 ~ 11.7 | GHz |
| O/P Frequency Range | 950 ~ 1950 | MHz |
| LO Frequency | 9.75 | GHz |
| Noise Figure | 1.0 [max.] | dB |
| High Band I/P Frequency Range | 11.7 ~ 12.75 | GHz |
| O/P Frequency Range | 1100 ~ 2150 | MHz |
| LO Frequency | 10.6 | GHz |
| Noise Figure | 0.2 [typ] | dB |
| LO Initial Accuracy | ± 0.5 | MHz |
| LO Temperature Drift (-30 ~ +60℃) | ± 0.75 | MHz |
| LO Phase Noise @ 1K Hz | -55 | dBc / Hz |
| LO Phase Noise @ 10K Hz | -80 | dBc / Hz |
| LO Phase Noise @ 100K Hz | -90 | dBc / Hz |
| Conversion Gain | 58 [min] | dB |
| Gain Flatness | ± 4 [max] | dB |
| Gain Variation | ± 1.0 | dB/27 MHz |
| Image Rejection | -40 [min.] | dB |
| O/P 1 dB Compression Point (P1dB) | 0.0 [min.] | dBm |
| Crosstalk Isolation | 18 [min.] | dB |
| Control Signals Ca (V) | 11.0 ~ 14.5 | V |
| Control Signals Cb (H) | 16.0 ~ 20.0 | V |
| Control Signals Cc | 22 ± 4 | KHz |
| O/P VSWR | 2.5 : 1 | ~ |
| DC Power | 11 ~ 20V/120 [max] | Vdc*mA |
| Working Temperature | -30 ~ +60 | ℃ |
| Output Impedance | 75 | Ω (F-Type) |
| Challenge | How This LNB Solves It |
|---|---|
| Weak high-band signals lead to poor picture quality |
High-band noise figure as low as 0.2dB (Typ.) – significantly improves high-band signal reception. |
| Temperature changes outdoors cause signal instability |
PLL technology with only ±0.75MHz drift (-30℃~+60℃) – stable performance in heat or cold. |
| Signal crosstalk between polarizations |
≥18dB cross-polarization isolation ensures vertical and horizontal signals do not interfere with each other. |
| Limited budget – need an economical solution |
Designed specifically for single TV users – the most economical solution, plug-and-play, no extra equipment needed. |
| Concerned about compatibility with new receivers |
Works with all modern receivers on the market – no compatibility concerns. |
Home Satellite TV – Ku-band satellite program reception for a single television Rural / Remote Areas – TV signal access where cable TV is not available RV / Camping – Temporary satellite TV reception during travel Backup Receiving System – Backup or temporary reception solution for primary systemsQ: What is the difference between ST-K21WN and ST-K21WA?
A: The ST-K21WN is a cost-effective version for single TV users, featuring a high-band noise figure as low as 0.2dB and conversion gain ≥58dB. The ST-K21WA offers higher gain (60dB Typ.) and tighter gain flatness (≤3.0dB) for applications requiring enhanced performance.
Q: What does the 0.2dB noise figure mean in practice?
A: This is the typical value for the high-band. An extremely low noise figure means the LNB generates very little self-noise in the high-band, allowing it to capture weak signals more effectively – ideal for users in fringe reception areas or those using smaller dish antennas.
Q: Can this LNB receive encrypted channels?
A: The LNB handles signal reception and downconversion – it does not perform decryption. As long as your receiver is equipped with the appropriate decryption module (such as a CAM card, subscription smart card, etc.), this LNB can receive all signals within the Ku-band frequency range.
Q: Do I need professional tools for installation?
A: No. The standard F-type connector uses standard coaxial cable. However, professional dish alignment is recommended for optimal reception performance.
Q: What is the operating temperature range?
A: -30℃ to +60℃. This covers most climate conditions – from cold winters to hot summers.
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