Difference between revisions of "Es'hail-2 Ground Station"

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__NOTOC__
 
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The BATC WebSDR & Spectrum Monitor are located at the iconic Goonhilly Earth Station in Cornwall (IO70JB).
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The BATC & AMSAT-UK QO-100 (Es'hail-2) WebSDR & Spectrum Monitor are located at the iconic Goonhilly Earth Station in Cornwall (IO70JB).
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The Narrowband WebSDR can be accessed at '''https://eshail.batc.org.uk/nb/''', the Wideband Spectrum Monitor at '''https://eshail.batc.org.uk/wb/'''
  
 
[[File:GH view.JPG|400px]]
 
[[File:GH view.JPG|400px]]
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The equipment is housed in a room dedicated to amateur radio infrastructure in the original control building for the now defunct GHY2 90 ft dish antennae, built in 1969.
 
The equipment is housed in a room dedicated to amateur radio infrastructure in the original control building for the now defunct GHY2 90 ft dish antennae, built in 1969.
  
As well as the Es'hail-2  (now known as Qatar Oscar 100) WebSDR and spectrum monitor, the amateur radio facility houses an AMSAT-UK Funcube ground station and an HF Kiwi WebSDR.  
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As well as the Es'hail-2  (now known as Qatar Oscar 100) WebSDR and spectrum monitor, the station houses an AMSAT-UK Funcube ground station and an HF Kiwi WebSDR with GPS TDOA.
  
The Oscar 100 webSDR and spectrum monitor can be accessed at '''https://eshail.batc.org.uk/'''
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== RF System ==
  
== Current Status ==
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"[Block Diagram Here]"
  
The RF hardware was installed at Goonhilly Earth Station in August 2018 and installation was completed in January 2019.
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=== Dish ===
 
 
The service was launched on 10th February 2019, 4 days before Oscar 100 was commissioned.
 
 
 
== Technical Details ==
 
 
 
===Dish===
 
  
 
The original dish installed in August 2018 was a consumer model and suffered damage in strong winds during October 2018.   
 
The original dish installed in August 2018 was a consumer model and suffered damage in strong winds during October 2018.   
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The 25 MHz reference is fed to the LNB through a dedicated coax run, and 2 further coax runs are used to feed separate horizontal & vertical feeds back to the equipment room.
 
The 25 MHz reference is fed to the LNB through a dedicated coax run, and 2 further coax runs are used to feed separate horizontal & vertical feeds back to the equipment room.
 
===Equipment room===
 
 
The Qatar Oscar100 equipment shares the dedicated amateur equipment room with an AMSAT-UK Funcube ground station and an HF Kiwi SDR.
 
 
[[File:GH shack.JPG|400px]]
 
  
 
=== Receivers ===
 
=== Receivers ===
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The GPS reference is a Leo Bodnar unit, running firmware version 1.12, programmed to produced 10 MHz (for the Airspys) and 25 MHz for the LNB.  The settings for the reference to produce these 2 frequencies were not straightforward (as the 2 outputs on the Leo Bodnar unit need to be linked) but are here for reference:
 
The GPS reference is a Leo Bodnar unit, running firmware version 1.12, programmed to produced 10 MHz (for the Airspys) and 25 MHz for the LNB.  The settings for the reference to produce these 2 frequencies were not straightforward (as the 2 outputs on the Leo Bodnar unit need to be linked) but are here for reference:
  
[[File:GPS Config.jpg|325px]]
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* [https://wiki.batc.org.uk/images/b/ba/GPS_Config.jpg 10MHz & 25MHz Leo Donar GPSDO Settings screenshot]
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== Computer System ==
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 +
"[Block Diagram Here]"
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=== Hardware ===
  
=== Host PC ===
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The WebSDR & Spectrum Monitor both run off a single machine with the following hardware specification:
  
The websdr and spectrum monitor are both hosted on a common PC platform, designed and developed by Phil M0DNY, with the following specification.
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* Intel i7-2600 CPU
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* 16GB DDR3 RAM
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* Intel DQ67SW Motherboard
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* 500GB Samsung 850 EVO SSD
  
===== PC Hardware =====
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=== Software ===
i7-2600 CPU<br />
 
16GB DDR3 RAM<br />
 
Intel DQ67SW Motherboard<br />
 
500GB Samsung 850 EVO SSD<br />
 
750W Corsair TX Power Supply<br />
 
  
===== PC Software =====
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* Ubuntu Server 18.04
Ubuntu Server 18.04<br />
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* Nginx Web Server & Reverse Proxy
Nginx Web Server<br />
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* WebSDR by PA3FWM ([http://www.websdr.org/ homepage])
airspy_tcp fork ([https://github.com/philcrump/airspy_tcp source])<br />
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* FFT Spectrum Server (source coming soon)
narrowband WebSDR by PA3FWM ([http://www.websdr.org/ homepage])<br />
 
wideband spectrum monitor (source coming soon)
 
  
===== Network =====
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== Networking ==
  
The network connection provided by Goonhilly provides a capability of < 250Mbit/s up and down stream.
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Goonhilly Earth Station has 2x diverse redundant 10Gb links into JANET PoPs. They have been kind enough to give us a dedicated IP address and access to >300Mb/s of up & down bandwidth for use by the station.
  
The networking infrastructure designed by Phil M0DNY consists of the following:
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A pfsense firewall running on a PC Engines APU2D4 board is used as the station router & firewall.
  
TBC
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A high-bandwidth Leo Bodnar NTP Server also provides NTP service to the station & the worldwide NTP Pool.

Revision as of 15:15, 15 February 2019

The BATC & AMSAT-UK QO-100 (Es'hail-2) WebSDR & Spectrum Monitor are located at the iconic Goonhilly Earth Station in Cornwall (IO70JB).

The Narrowband WebSDR can be accessed at https://eshail.batc.org.uk/nb/, the Wideband Spectrum Monitor at https://eshail.batc.org.uk/wb/

GH view.JPG GH room.JPG GHY2 Desk.jpg

The equipment is housed in a room dedicated to amateur radio infrastructure in the original control building for the now defunct GHY2 90 ft dish antennae, built in 1969.

As well as the Es'hail-2 (now known as Qatar Oscar 100) WebSDR and spectrum monitor, the station houses an AMSAT-UK Funcube ground station and an HF Kiwi WebSDR with GPS TDOA.

RF System

"[Block Diagram Here]"

Dish

The original dish installed in August 2018 was a consumer model and suffered damage in strong winds during October 2018.

This was replaced in January 2019 with a heavy duty Hirschmann 1.3m offset dish.

GHY200 Dish.JPG GH Dish.JPG

RF Front End

A modified Octagon quad LNB is mounted on the dish and locked to the 25 MHz output from a Leo Bodnar GPSDO.

See https://wiki.batc.org.uk/Es%27hail-2_LNBs_and_Antennaes for more details on the locking modifications

The 25 MHz reference is fed to the LNB through a dedicated coax run, and 2 further coax runs are used to feed separate horizontal & vertical feeds back to the equipment room.

Receivers

2 separate AirSpy USB SDR Receivers, locked to a 10MHz output from the LeoBodnar GPSDO, are used for the WebSDR and Spectrum monitor.

MainTray2.jpg


RearPanel2.jpg

GPS reference

The GPS reference is a Leo Bodnar unit, running firmware version 1.12, programmed to produced 10 MHz (for the Airspys) and 25 MHz for the LNB. The settings for the reference to produce these 2 frequencies were not straightforward (as the 2 outputs on the Leo Bodnar unit need to be linked) but are here for reference:

Computer System

"[Block Diagram Here]"

Hardware

The WebSDR & Spectrum Monitor both run off a single machine with the following hardware specification:

  • Intel i7-2600 CPU
  • 16GB DDR3 RAM
  • Intel DQ67SW Motherboard
  • 500GB Samsung 850 EVO SSD

Software

  • Ubuntu Server 18.04
  • Nginx Web Server & Reverse Proxy
  • WebSDR by PA3FWM (homepage)
  • FFT Spectrum Server (source coming soon)

Networking

Goonhilly Earth Station has 2x diverse redundant 10Gb links into JANET PoPs. They have been kind enough to give us a dedicated IP address and access to >300Mb/s of up & down bandwidth for use by the station.

A pfsense firewall running on a PC Engines APU2D4 board is used as the station router & firewall.

A high-bandwidth Leo Bodnar NTP Server also provides NTP service to the station & the worldwide NTP Pool.