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10 GHz tropo/satellite LNB
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10 GHz LNB with PLL and TCXO

10 GHz LNB with PLL and TCXO

LNB with PLL and 25 MHz X-tal. For tropo and satellite.

Main functions

Ku band LNB

Very low noise block - down converter
1 ppm temperature stability TCXO built-in
Input of LNB is designed for 10 to 12.5 GHz
Vertical and Horizontal polarisation
Voltage supply +12V for V-pol, +15V for H-pol*
* NEW IF IC in LNB needs +18V to switch to H-pol.

Bias Tee

Low Insertion Loss
Supply voltage and IF over one coax
Variable ATTENUATOR in the bias tee
High voltage/current protection
RF signal protection limiter - max. signal 20 mW (ver. 0.4 and higher)
Voltage supply +12V for V-pol, +15V for H-pol*
* NEW IF IC in LNB needs +18V to switch to H-pol.
Bias tee connectors: IN (LNB) = F, OUT = SMA and F

Option: 3D printed POTY dual band antenna adapter

UV stable PETG material
22 mm Cu tube diameter
POTY pipe WG fixed by M4 screw
ONLY ADAPTER, 2.4 GHz antenna not included!

Available as

ASSEMBLED: classic version - ready to use
ASSEMBLED: version with POTY adapter (only adapter, not 2.4 GHz antenna!) - ready to use

RECOMMENDATIONS TO BUY:

RTL-SDR receiver with 1ppm TCXO
Adalm Pluto
SMA-SMA cable (total length about 17 cm)

Included in package

LNB assembled and tested
POTY adapter (version with POTY)

Manual

If you want to know more please check our wiki with 10 GHz LNB TCXO manual.

⚠ When installing the LNB with a POTY antenna, remember to position it correctly in the dish focus! If you place the antenna outside the dish's focal point, the antenna gain will be reduced and unwanted lobes will form. You can read more also there: forum-amsat-dl.org

Technical Parameters

LNB local oscillator - model SDR	9750 MHz
LNB local oscillator - model 10489-432	10057 MHz
LNB local oscillator - model 10368-432	9936 MHz
Conversion gain of a LNB	> 50 dB
LNB IF - model SDR	739 MHz for 10489 MHz (QO-100) 618 MHz for 10368 MHz (TROPO/EME)
LNB IF - model 10489-432	432 MHz (10489 MHz RF IN)
LNB IF - model 10368-432	432 MHz (10368 MHz RF IN)
Stability with TCXO	0.5 ppm (X 390)
Frequency error with TCXO	0 to abt 30 kHz
DC voltage	+12 V for Vertical polarisation (NB) +15 V for Horizontal (WB) NEW IF IC in LNB needs +18V to switch to H-pol.
DC current	typ. 180 mA
Bias TEE IF loss	typ. less than 2.5 dB (ATT set to 0)
Variable Attenuator on IF	1 dB to NO signal

⚠ IMPORTANT NOTE: TCXO has got 1 ppm temperature stability and 2 ppm production frequency tolerance. It means that all pieces have got some small frequency offset. Depends on the piece, it is 0 to about 20 kHz. This is not a problem for SDR RX where you can set it in the software. For LNB with 432 MHz IF you have to calculate with this offset from TX frequency and set it in TRX menu.

LNB models/variants

Bias Tee block diagram - version 0.x

Bias Tee block diagram - version 1.x

classic LNB & Bias tee version 0.x vs 1.x

LNB & Bias tee with POTY adapter

LNB & Bias tee with options (RTL-SDR + SMA-SMA cable)

LNB & Bias tee POTY with options (RTL-SDR + SMA-SMA cable)

NEW VERSION with external reference

⚠ NEW VERSION: The 10 GHz Low Noise Block (LNB) modified for external 25 MHz reference for internal PLL. This signal is feeded by the same one coaxial cable as IF down. Special small Bias Tee box with TCXO or 10 MHz reference signal works as DC injector and also 25 MHz Source for LNB. There is also variable attenuator for IF signal which allows you to change IF signal from 0 to maximum. You can still switch between V and H polarisation by supply voltage. More info on product page.