Universal Ku-Band Single LNBF - 0.7dB NF, 10.7-12.75GHz, Vertical/Horizontal

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:

• Wide Compatibility – Works with all modern satellite receivers on the market
• Full Band Access – Receives all Ku-band channels (free and encrypted)
• Cost-Effective – The simplest and most economical solution for single TV setups
• PLL Frequency Stability – Precise LO with drift as low as ±0.75MHz

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

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.

1. Ultra-Low Noise in High-Band – 0.2dB typical noise figure for clearer high-band signal reception.
2. Full Band Coverage – Complete 10.7~12.75GHz Ku-band – receives both free and encrypted channels.
3. PLL Precise Frequency Stability – Stable LO with low drift for reliable signal.
4. Wide Compatibility – Works with all modern satellite receivers on the market.
5. Cost-Effective – The simplest and most economical solution for single TV setups.

• 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 systems

Q: 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.