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KaKu Co-locate Linear 23mm LNB with one KaKu switchable output and one Ka output


Item: 5104


This industry-first and unique dual band Ka/Ku LNB is designed to receive Ku (10.7 to 12.75 GHz) and Ka (21.4 to 22.0 GHz) TV, radio and data channels with linear polarity (Horizontal/Vertical) from the same orbital position at 25.5° East. It can be used with standard offset dish antennas of 60 to 90cm diameter and F/D of 0.6.


The LNB has two ports – one supporting either Ku or Ka and the second port fixed to deliver Ka-only. The selection between Ku and Ka band is based Tone Burst or DiSEqC 1.0 commands. The product is supplied with a 40mm ring adapter to ensure compatibility with the majority of already installed legacy dish antennas.


Eutelsat 25.5E Ka/Ku coverage over the MENA region


Product Specifications
F/D ~0.6
External feed holder diameter 23mm (40 mm ring adapter supplied accessory) 
Number of F connectors 2 (one for Ka band only, one for Ka/Ku bands)
Adjustment of polarisation by rotating the LNB feedhorn (+/-45°) 
Nominal antenna size 60cm to 90cm  
Polarisation Dual linear for Ka band and Ku band
Output connector F type female (EN60169)
RF and Electrical  
Ku band:  
Frequency range Low Band: 10.70 ~ 11.70 GHz
  High Band: 11.70 ~ 12.75 GHz
LOs: 9.75 GHz (Low band) & 10.6 GHz (High band)
LOs stability (25°C)                                      +/- 1 MHz
  (-30°C ~60°C)                        +/- 3 MHz
Phase Noise (1 KHz offset)                          -50 dBc/Hz
  (10 KHz offset)                        -75 dBc/Hz
  (100 KHz offset)                      -95 dBc/Hz
  (1 MHz offset)                          -105 dBc/Hz
Noise figure 1.2 dB typ.
Gain 50 - 60 dB 
Gain Ripple (over full band)  +/- 5 dB
Output power at 1dB gain compression 0 dBm min
Band  selection 0/22 KHz +/- 4 kHz
Polarisation selection 13 V vertical /18 V horizontal
Cross polarisation isolation 18dB min.
Ka band:  
Frequency range 21.4 to 22.0GHz
IF frequency range 950 to 2150MHz
LO 20.25 GHz
LO stability (25°C)                                      +/- 1 MHz
  (-30°C ~60°C)                        +/- 3 MHz
LO phase noise (1 KHz offset)                          -50 dBc/Hz
  (10 KHz offset)                        -75 dBc/Hz
  (100 KHz offset)                      -95 dBc/Hz
  (1 MHz offset)                          -105 dBc/Hz   
Noise figure 1.5 dB typ, 1.7dB max.
Gain 50 - 60 dB 
Output power at 1dB gain compression 0 dBm min
LO selection none (fixed to 20.25 GHz) 
Polarisation selection 13V (vertical) / 18V (horizontal)
Cross polarisation isolation 20 dB min.
Polarisation and band selections:  
Receiver Commands LNB Band selection
Tone Burst A or DiSEqC A Ku band (Low & High) 
Tone Burst B or DiSEqC B Ka
                          DiSEqC C Ku band (Low & High)
                          DiSEqC D Ka
• 13/18V command is used to select between:  
- Vertical and Horizontal polarization for Ku and Ka band  
• 0/22KHz is used to select between:  
- 10.7 to 11.7 GHz in Ku band (ie 9.75GHz LO) – Low band  
- 11.7 to 12.75 GHz in Ku band (ie 10.6GHz LO) – High band  
- In Ka band, the LO is fixed whatever is the 0/22 KHz signal (ie 20.25 GHz LO)   
• Current 180 mA max
Temparture range -30 to +60 °C operating
  -50 to 75 °C storage
Frequently Asked Questions

What is a feedhorn?

The feedhorn is the part of a satellite dish system which gathers the reflected signal from the dish and focuses it towards the LNB.

What is an LNB?

An LNB - Low Noise Block (also called an LNC- Low Noise Converter), is used for communications (broadcast) satellite reception. The LNB is usually affixed either in or on the satellite dish.

What is an LNBF?

An LNBF is an LNB with an integrated feedhorn

What is a Monoblock LNB?

This design consists of two independent LNBs in a single case. The two LNBs can be automatically addressed with any DiSEqC 1.0 or higher receiver. In some cases they can also be addressed with ToneBurst / MiniDiSEqC. However, they are only available for satellites with a fixed 3 degree, 4.3 degree, 6 degree …spacing. In Europe, for example, there are monoblock single, twin and quad LNBs for the Ku band, which have a pre-defined spacing of 6 degrees (for Astra 1 / Hotbird , for example).

Why can I receive only one satellite with my Monoblock?

Monoblock LNBs are designed for a specific dish size, 80cm for example. If your dish is too small (70cm for example) or too wide (90cm for example) it is not possible to receive both satellites together. Please choose the dish size for which the monoblock LNB has been designed.