Relevant links on this satsig.net web site:
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HX VSAT hub

HX50 VSAT terminal

HX NMS

HX satellite broadband in South America

HX VSAT terminal installation

VSAT information index

Satellite broadband forum index

Satellite internet in Europe

Prodelin dish dimensions

Mode matched feed

HX Universal LNB (Ku band for 2-way VSAT)

Update 2 July 2010
The values of the two local oscillator frequencies and which local oscillator is related to the 22kHz tone is subject to dispute. 22kHz tone may relate to the low LO=9.75.  The upper LO may be 10.75, not 10.6 as stated below. If anyone can verify, please tell me eric@satsig.net

HughesNet BUC/LNB
As shown, the transmit polarisation, from the BUC on the left, is vertical. Receive polarisation is Horizontal.

HughesNet LNB PN 1501882-0002
LNB PN 1501882-0002

HughesNet LNB PN 1501882-0002
LNB PN 1501882-0002

 

11 May 2010: Announcement.

Hughes have released a new product in the forum of a universal Ku band LNB, pictured on the right. The module comprises a cross-pol OMT and LNB.

The LNB has a switchable local oscillator frequency, using a 22kHz tone from the HX50  modem.

Two frequencies are selectable using a 22kHz tone.

22 kHz Tone ON means the LO is 9750 MHz,
22 kHz Tone OFF means the LO is 10600 MHz.

we have a HNS HX hub here in Malaysia and the VSAT LNB is using 10600 Mhz LO and the LNB 22 KHz switch is "OFF".

The overall satellite downlink band range covered by the LNB (HughesNet part number PN 1501882-0002) is 10.95 - 12.75 GHz. The lower local oscillator frequency will be used to receive the lower frequencies and the higher local oscillator will be used for the higher frequencies.

The transition frequency is determined by software loaded into the modem at /cfg0/sbc.cfg.  If necessary, this config file may be uploaded using the Config File Upload option on the page selected by doing Advanced Config, Installation, Setup (http://192.168.0.1 /fs/registration /setup.html)

When configuring the modem at installation, the installer must select a Receive LNB Type in the pull down menu.  Radio Type:  Receive LNB type.  The /cfg0/sbc.cfg should cause an LNB option to appear that will look similar to this "XXXXX UNIVERSAL"

Typically the transition frequency will be 11.7 GHz so:
10.95 -11.7 GHz    LO=9750,   L band (cable) 1200 - 1950 MHz
11.7 - 12.75 GHz    LO=10600,   L band (cable) 1100 - 2150 MHz

The information for this page has been kindly provided by Bentley Walker who operate HX networks covering Europe, Africa, Middle East, including Iraq, Afghanistan, Pakistan and Kazakhstan.

An SBC.cfg file had this content:

[RxLnbList]
Standard=10.0,10.0
Universal=10.75,9.75
TG_1024572-0001=10,10
TG_1024572-0002=10.75,10.75
TG_1024572-0003=11.3,11.3

[RxLnbList]
Default=9.75,9.75
Pure=10.75,9.75
Invacom=10.6,9.75
TG_1024572-0001=10,10
TG_1024572-0002=10.75,10.75
TG_1024572-0003=11.3,11.3

[RxLnbList]
TG_1024572-0001=10,10
Pure=10.75,9.75
1500287-0001=10,10
Invacom=10.6,9.75
TG_1024572-0001=10,10
TG_1024572-0002=10.75,10.75
TG_1024572-0003=11.3,11.3
Invacom_bw=10,10,10.7,12.15

[RxLnbList]
AFSAT_NSS7=10,10
AFSAT_IS10=11.3,11.3
AFSAT_UNIVERSAL=10.6,9.75
Pure=10.75,9.75
Invacom=10.6,9.75
TG_1024572-0001=10,10
TG_1024572-0002=10.75,10.75


Page new ECJ 11 May 2010, amended 14 April 2016.