The GT-SAT GT-TCIR40M is a circular Twin LNB with two independent outputs, designed for satellite signals using right-hand and left-hand circular polarisation, RHCP and LHCP. It is used for selected satellite services carrying Russian and Eastern European channels, including NTV Plus where satellite coverage and local reception conditions permit.
Unlike a conventional Universal LNB for linear polarisation, this model is designed for circular reception within the 11.70–12.75 GHz high band. Its fixed 10.75 GHz local oscillator converts the satellite signal to an output frequency range of 750–2000 MHz.
The two independent outputs allow two separate satellite receivers or one dual-tuner receiver to be connected. Each connected tuner can select RHCP or LHCP independently through its supply voltage.
✅ Product Benefits
- Designed for circularly polarised satellite signals
- Supports both RHCP and LHCP
- Two independent outputs
- Supports two receivers or two separate tuners
- Designed for the 11.70–12.75 GHz high band
- Fixed 10.75 GHz local oscillator
- Conversion gain of 56–60 dB
- Typical cross-polarisation isolation of 25 dB
- Good frequency stability
- 75-ohm F-female connectors
- Suitable for selected Russian and Eastern European satellite services
- Designed for reception within European coverage areas
🎯 Ideal For
- Satellites transmitting with circular polarisation
- Reception of RHCP and LHCP signals
- Selected NTV Plus installations
- Two separate satellite receivers
- One receiver with two satellite tuners
- Simultaneous viewing and recording
- Replacing a circular Twin LNB with a 10.75 GHz LO
- Installations where a linear Universal LNB is unsuitable
🔧 Use and Connection
The LNB is installed on a compatible satellite dish. Its two F-outputs are connected with separate 75-ohm coaxial cables to two receivers or to individual tuners in a compatible receiver.
Polarisation is selected through the receiver’s supply voltage:
RHCP: 11–14 V DC
LHCP: 16–20 V DC
Independent operation of two receivers or tuners requires a separate coaxial cable from each LNB output.
This product is designed for circular polarisation and should not be confused with a conventional Universal LNB for linearly polarised satellites.
⚙️ Technical Specifications
Product type: Circular Twin LNB
Model: GT-SAT GT-TCIR40M
Polarisation: Circular, RHCP and LHCP
Number of outputs: 2 independent outputs
Directly connected receivers/tuners: 2
Input frequency: 11.70–12.75 GHz
Output frequency: 750–2000 MHz
Local oscillator frequency: 10.75 GHz
LO frequency stability at room temperature: Maximum ±1 MHz
LO phase noise at 1 kHz: Maximum −60 dBc/Hz
LO phase noise at 10 kHz: Maximum −85 dBc/Hz
LO phase noise at 100 kHz: Maximum −105 dBc/Hz
Conversion gain: 56–60 dB
Gain flatness over 26 MHz: Typical ±0.5 dB
RHCP control voltage: 11–14 V DC
LHCP control voltage: 16–20 V DC
Cross-polarisation isolation: 25 dB typical
Image rejection: Minimum 40 dB
Power consumption: 190 mA typical
Output impedance: 75 Ω
Output connectors: 2 × F-female
Output spurious: Below −60 dBm
📦 Package Contents
- 1 × GT-SAT GT-TCIR40M Circular Twin LNB
