In the rapidly evolving fields of Satellite Communications (SatCom)? and Earth Observation (EO), off-the-shelf components often fail to meet the specific requirements of modern missions. Whether it’s a VSAT terminal requiring precise frequency agility or a ground station monitoring environmental changes via satellite, the Low Noise Block Downconverter (LNB) is the most critical component for signal integrity. Recognizing that standard catalogs cannot cover every operational need, we provide a comprehensive portfolio of customizable LNBs? covering the entire radio frequency spectrum from P-band to Q/V-band. This guide highlights our technical capabilities and how these devices empower advanced VSAT and Earth Monitoring applications.

Application Spotlight: VSAT & Earth Monitoring

1. Precision in Earth Observation (EO)

Earth monitoring satellites (such as those tracking climate change, ice melt, or vegetation) often operate in high-frequency bands (Ka/Q/V) to achieve higher resolution.

The Challenge:? High-frequency signals (e.g., 20-30 GHz) suffer from higher atmospheric attenuation and require extremely low Noise Figures (NF) to detect weak signals from distant sensors.
Our Solution:? Models like the GKA26531G? and GKA27531G? series offer Noise Figures as low as 150K–500K? and high gain (≥60dB). With multi-LO (Local Oscillator) switching capability, operators can reconfigure the LNB to track different satellite sensors without changing hardware, ensuring continuous data acquisition for environmental monitoring.

2. Flexibility in VSAT Communications

Modern VSAT networks demand more than just "always-on" connectivity; they require frequency agility to avoid interference and optimize bandwidth.

The Challenge:? Traditional single-LO LNBs are locked to one frequency range, limiting network reconfiguration.
Our Solution:? Our GKA9100HICN? and GKA9200HICN? series introduce Multi-LO Switching (Dual, Triple, Quad, and Five-LO). For example, a single VSAT terminal can switch between 17.2GHz and 22.2GHz segments instantly via software control. This is vital for military and emergency response networks that must hop frequencies to maintain secure links.

Product Selection Guide: Full Spectrum Coverage

The following table lists standard models available. Note: Frequencies not listed are fully customizable upon request.

Model No.	Frequency Band	Input Freq (GHz)	Output Freq (GHz)	Gain (dB)	Noise Figure	Output P1dB	VSWR In/Out	Interface (In/Out)	Power Supply
GKA5763G-Ao1?	Q/V-Band	57 ~ 63	0.95 ~ 2.15 (Concurrent)	≥60	500 K	≥ 5 dBm	2.0 / 1.5	WR15 / N/SMA	12~18 VDC
GKA5157G-Ao1?	Q-Band	51 ~ 57	0.95 ~ 2.15 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.5	WR19 / N/SMA	12~18 VDC
GKA4551G-Ao1?	Q-Band	45 ~ 51	0.95 ~ 2.15 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR19 / N/SMA	12~18 VDC
GKA42551G-Ao1?	Q-Band	42.5 ~ 45	0.95 ~ 2.15 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR22 / N/SMA	12~18 VDC
GKA37425G-Ao1?	Ka-Band	37 ~ 42.5	0.95 ~ 2.15 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR22 / N/SMA	12~18 VDC
GKA3137G-Ao1?	Ka-Band	31 ~ 37	0.95 ~ 2.15 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR28 / N/SMA	12~18 VDC
GKA26531G-Ao1?	Ka-Band	26.5 ~ 31	0.95 ~ 2.15 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR28 / N/SMA	12~18 VDC
GKA222265G-Ao1?	K-Band	22.2 ~ 26.5	0.95 ~ 2.25 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR42 / N/SMA	12~18 VDC
GKA172222G-Ao1?	K-Band	17.2 ~ 22.2	0.95 ~ 2.25 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR42 / N/SMA	12~18 VDC
GKA15172G-Ao1?	K-Band	15 ~ 17.2	0.95 ~ 2.25 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR62 / N/SMA	12~18 VDC
GKu1315G-Ao1?	Ku-Band	13 ~ 15	0.95 ~ 2.25 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR75 / N/SMA	12~18 VDC
GKu1071275G-Ao1?	Ku-Band	10.7 ~ 12.75	0.95 ~ 2.00 (Concurrent)	≥60	500 K	≥ 5 dBm	1.5 / 1.35	WR75 / N/SMA	12~18 VDC
GKA177222G-Ao4?	Multi-Band	17.7 ~ 22.2	4 Segments Concurrent	≥60	160 K	≥ 10 dBm	2.0 / 1.5	BJ220 / N/SMA	12~18 VDC
GKA27531G-RS-Aio4?	Ka-Band	27.5 ~ 31	6 LO Switching	≥60	420 K	≥ 5 dBm	2.0 / 1.5	2.92mm / N/SMA	12~18 VDC
GKA9100HICN Series?	Ku/Ka	Custom	Multi-LO Switch	≥60	Low Noise	High	Optimized	Standard	12~18 VDC
GKUA145212-I2-Ao2?	Ku Ka Combo	11.45~12.75 / 19.6~21.2	Dual Band Output	≥60	Low Noise	High	Optimized	Standard	12~18 VDC