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HELLO NEW ZEALAND, WHERE'S D1? THESE ARE YOUR COMPASS CO-ORDINATES
JX Commercial |
JX Domestic |
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Triangle/Stratos Television Installations |
Package 2 |
Package 5 |
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The above article is available in booklet form free of charge - contact us through email or phone
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Teachers aid: Directions on how to tune JX Installed Receivers to LIGGINS broadcasts. |
The History of Satellite TV in New Zealand
History of Satellite TV in New Zealand
Receivable Signals in New Zealand
New Zealand Freeview Signal Levels
What can be received on a 1.8mtr Dish in New Zealand?
ABC & BBC World on a 90cm dish (Package 2) F.T.A
General Articles
Intelsat 18 replaces Intelsat 701
Low noise block down converter (LNB)
How to determine its true parameters.
Offset Dishes and LNB Matching
Satellite Launch Date by Country
Working with a spectrum analyzer
From AUCKLAND to kiwi base AFGHANISTAN (the story with pictures)
How to:
Install 40mm single LNBF throat adapter
Modifying a Toroidal dish for Intelsat 5
How to install a SG2100 motor *
*(BEFORE BEGINNING, CHECK YOUR NZ CO-ORDINATES HERE)
The Optus C1 National beams project - Click Here for details |
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MTI Prime Focus LNBF |
2.4 Meter Prime focus Dish |
Test report BSC421 C Band LNBF
Available from JX Satellites $62.30 CLICK HERE
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Firstly we are not going to criticize other makes of C band LNBF’s. JX Satellite has been looking for a C band LNBF which would provide them with a little extra margin when using a 90cm offset dish for IS5 and for a 1.8m for Asia sat 4.To be very fair the current 15k Pacific lives up to its description and it performs very well for 98% of the applications we require.
The BSC421 13K is the next step up it also performs up to our expectations as the spectrum analyzer pictures will show. The test comprised of a 1m offset dish locked and peaked on IS5 @ 169 degrees East.
The C band demodulated output at 950 to 1750 MHz was plugged into a two way splitter with the power pass into a Mirchee Satellite receiver as they can hold both signal and quality in an easily read window. The second output port was plugged into an Advantest commercial spectrum analyzer and set up on IS5 output frequency of 4160 GHz /26478 M/s with a fec of ¾.The Pacific Lnbf was re adjusted using an Avcom PS47 D for maximum output and cross pole null.
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Pacific 15K = (Minus) 55dbm |
BSC421 13K = -49dbm |
Neither of the LNBF’s was fitted with a conical feed horn or Scalar rings during the test the Lnbf was positioned in the plastic feed horn holder as per the picture below:
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The BSC421 is an accurate 13K C-Band LNBF made specifically for DMS International of the USA. This is a compact, lightweight, weather-proof LNBF with High Gain Output. It has excellent D.R.O. stability and Low Phase Noise for digital applications as well as Analog. 3.4 to 4.2 GHz extended frequency, with L band output in the 950-1750MHz range. Voltage controlled (H/V) switching 13/18V. A true 13K Noise Figure with 65dB Gain, and comes complete with the Scalar Ring and a dielectric plate for circular polarized satellites such as the Russian Gorizont and Express and the original Intelsat class of communications satellite.
Test results:
Pacific 15K = -55Dbm or 52.2 Dbuv
BSC421 = -49Dbm or 58.00 Dbuv
dBm |
dBw |
dBuV |
-55 |
-85 |
51.9897 |
-54 |
-84 |
52.9897 |
-53 |
-83 |
53.9897 |
-52 |
-82 |
54.9897 |
-51 |
-81 |
55.9897 |
-50 |
-80 |
56.9897 |
-49 |
-79 |
57.9897 |
-48 |
-78 |
58.9897 |
Specifications:
HOME WHAT CAN I GET ON A 1.8Mtr
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