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VSAT ODU RF Unit - Block Upconverter (13.75-14.5GHz) with Integrated LNB (950-1700MHz), 58dB Gain
VSAT ODU RF Unit - Block Upconverter (13.75-14.5GHz) with Integrated LNB (950-1700MHz), 58dB Gain
Specifications
Brand Name :
SETON
Model Number :
ST-Tx6W
Place of Origin :
China
MOQ :
1pcs
Payment Terms :
T/T,Western Union
Delivery Time :
30-35 days
Packaging Details :
CARTON
Output Frequency Range :
13.75 ~ 14.5GHz
Input Frequency Range :
950 ~ 1700MHz
LO Frequency :
12.8GHz
Noise Figure :
15dB[Max.]
Operating Temperature :
-40 ~ +60℃
small Signal Gain :
58dB[Typ.]/ 54dB[Min.]
Description
VSAT KU Band Block Up Converter (BUC) - ST-Tx6W
VSAT RF Assembly: LNB (950-1700MHz In) & BUC (13.75-14.5GHz Out) - 58dB Small Signal Gain
Technical Specifications
No. ITEM SPECIFICATION UNIT
K-1 Output Frequency Range 13.75 ~ 14.5 GHz
K-2 Input Frequency Range 950 ~ 1700 MHz
K-3 LO Frequency 12.8 GHz
K-4 Noise Figure 15[Max.] dB
K-5 10MHz External Reference Frequency sensitivity -15 ~ +5 dBm
K-6 Output Power (P1dB) +37.8[Typ.] (+25℃) dBm
K-7 IF Input VSWR 2.0:1 /
K-8 RF Shut off -70 dBm
K-9 In Band Spurious(Power +30dBm Output) -50 dBc
K-10 Out of Band Spurious (Power +30dBm Output) -50 dBc
K-11 (a) over any 2MHz Band (pk-pk) 0.5 dB
K-12 (b) over any 125MHz Band (pk-pk) 2.5 dB
K-13 (c) over any 500MHz Band (pk-pk) 4 dB
K-14 Power Draw 38[Max.] W
K-15 DC Voltage Range 20 ~ 30 V
K-16 Weight 880 g
K-17 Operating Temperature -40 ~ +60 ℃
K-18 RF Output VSWR 2.0:1 /
K-19 Small Signal Gain 58[Typ.]/54[Min.] dB
What is a Block Up Converter (BUC)?
A Block Up Converter (BUC) is a critical radio frequency (RF) device used in satellite communications (satcom) to transmit a signal from Earth to a satellite. Its primary function is to convert a lower frequency signal to a much higher frequency (microwave band) and amplify it with enough power to travel the vast distance to a geostationary or other satellite.
Think of it as the powerful "shouter" in a satellite link:
  • Your modem creates the message (data)
  • The BUC shouts this message on a very high-frequency channel so the satellite far away can hear it clearly
  • The satellite's "ears" are its transponders
It is almost always used in conjunction with a LNB (Low-Noise Block downconverter), which performs the reverse function for receiving signals.
In a nutshell: BUC (Transmit) + LNB (Receive) = ODU (Outdoor Unit) in a VSAT antenna system.
How Does a BUC Work? (Key Functions)
A BUC performs three essential operations in sequence:
  • Frequency Up-Conversion: This is its core task. It takes an intermediate frequency (IF) signal coming from the indoor satellite modem (typically in the L-band, e.g., 950-1750 MHz or 1400 MHz) and mixes it with a stable, high-frequency local oscillator (LO) signal. This process shifts the IF signal up to the final radio frequency (RF) band used for satellite uplinks, such as Ku-band (14 GHz), Ka-band (30 GHz), or C-band (6 GHz)
  • Power Amplification: The up-converted signal is very weak. The BUC contains a High-Power Amplifier (HPA), using technology like GaAs FET or GaN, to boost the signal power dramatically. Output power is a key specification, ranging from 2W (for small mobile terminals) to hundreds of watts (for large teleports)
  • Filtering: Internal filters clean the signal, removing unwanted harmonics and spurious emissions generated during the up-conversion and amplification process to ensure a pure transmission that meets regulatory standards


Block Diagram & Signal Flow:

Satellite Modem (Indoor)
↓
IF Signal (e.g., 1400 MHz) + DC Power via Coaxial Cable
↓
**BUC (Outdoor on antenna)**
↓
1. **Up-Converter:** IF + LO → RF (e.g., 14.25 GHz)
↓
2. **Power Amplifier:** Boosts to, e.g., 8 Watts
↓
3. **Filter:** Removes unwanted noise
↓
RF Output to Feed Horn
↓
Transmitted to Satellite


BUC vs. LNB: A Quick Comparison



Feature Block Up Converter (BUC) Low-Noise Block downconverter (LNB)
Function Transmit (Uplink) Receive (Downlink)
Direction Earth → Satellite Satellite → Earth
Key Task Up-Convert & Amplify Power Amplify with Low Noise & Down-Convert
Critical Spec Output Power (Watts) Noise Figure (dB)
Typical Location On the transmit feed of antenna On the receive feed (or part of a combined feed)


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VSAT ODU RF Unit - Block Upconverter (13.75-14.5GHz) with Integrated LNB (950-1700MHz), 58dB Gain

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Product Detail
Brand Name :
SETON
Model Number :
ST-Tx6W
Place of Origin :
China
MOQ :
1pcs
Payment Terms :
T/T,Western Union
Delivery Time :
30-35 days
Contact Supplier
VSAT ODU RF Unit - Block Upconverter (13.75-14.5GHz) with Integrated LNB (950-1700MHz), 58dB Gain

Chenzhou Seton Technology Co., Ltd

Verified Supplier
2 Years
hunan, chenzhou
Since 2019
Main Products :
, ,
Employee Number :
100~200
Certification Level :
Verified Supplier
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