Link Margin (some are calculated)
Transponder 2 - 10E 11387H
	TBS6903 TP2
	Ayecka SR1 #3 TP2
Transponder 1 - 10E 11263H
	TBS6903 TP1
	Ayecka SR1 #2 TP1 BS/HVS-1 link margin
TelliCast - lost packets
Transponder 2 - 10E 11387H
	HVS-2 lost packets TP2 PC Lund TBS6903
	HVS-2 lost packets TP2 PC Stamsund Ayecka SR1
Transponder 1 - 10E 11263H
	HVS-1 lost packets TP1 PC Lund TBS6903
Traffic - all PIDs
Transponder 2 - 10E 11387H
	TBS6903 TP2
	Ayecka SR1 #3 TP2
Transponder 1 - 10E 11263H
	TBS6903 TP1
SNR - signal-to-noise ratio
Transponder 2 - 10E 11387H
	TBS6903 TP2
	Ayecka SR1 #3 TP2
Transponder 1 - 10E 11263H
	TBS6903 TP1
	Ayecka SR1 #2 TP1
BER - bit error rate
Transponder 2 - 10E 11387H
	TBS6903 TP2
	Ayecka SR1 #3 TP2
Transponder 1 - 10E 11263H
	TBS6903 TP1
	Ayecka SR1 #2 TP1
RF level - higher plot means lower signal
Transponder 2 - 10E 11387H
	TBS6903 TP2
	Ayecka SR1 #3 TP2
Transponder 1 - 10E 11263H
	TBS6903 TP1
	Ayecka SR1 #2 TP1

Other periods: day week month year

This data is taken from PCs fed by Ayecka SR1 IP and TBS receivers. The RF feeds are shown in red. The antenna is pointed to the EUTELSAT 10A satellite at 10° E. Readings are taken every five minutes, and X-axis times are in UTC. From late September 2017 the main RF feed has been changed to have a 4-way splitter - there's enough signal to allow this, otherwise an in-line amplifier could have been added. The four outputs are used to feed the three main receivers. Output two from the LNB is used purely for HVS-1, three is used for HVS-1 and HVS-2 in a single-cable, dual-tuner arrangement, and output four allows direct access to the LNB for polarisation tests, which would otherwise interfere with routine reception.

Two receive PCs are fed from the Traffic LAN ports of the Ayecka SR 1 IP receivers on a private LANs (192.168.10.x/20.x) via GS605 Netgear switches, with 1 Gbps network cards added to the receiver PCs. An Edimax USB2.0-Ethernet adapter is an alternative because of better drivers. PC Stamsund is fed from a TBS5925 USB 2.0 box. Ayecka SR1 #2 receiver takes only HVS, received and processed by PC Kiruna. From Feb-2017 PC Lund monitors HVS-1 & HVS-2 with a single-cable TBS6903 dual-tuner PCIe card.

The Ayecka SR1 Management ports are connected to the existing 192.168.0.x house LAN, through which management access is possible from any local PC.

125 cm antenna with quad-output LNB pointed at 10A

Output 1

Output 2

Output 3

Output 4

4-way splitter

Amp + 2-way splitter

DC-pass

RF only

DC-pass

RF only

Ayecka
SR1 #1
BS only

TBS5925
USB
BS only

Ayecka
SR 1 #3
HVS-2 only

(spare)

Ayecka
SR1 #2
HVS-1 only

TBS6903
dual-tuner
PCIe

(spare)

TBS5925
box
USB pass-through

1 Gbps
Ethernet

USB 2.0
|

1 Gbps
Ethernet

PCIe
card

USB 2.0
|

||
||

Airspy SDR
Spectrum analyser

<==Private LAN==>

<=Private LAN=>

i5-760 PC
Alta
Receive BS
Process BS

i5-4460 PC
Harstad

Receive BS

i5-3330 PC
Stamsund
BS RX & process
HVS-2 RX & delete

i7-4770K PC
Kiruna
Process BS
HVS rec. & proc.

i5-6400 PC
Lund

Receive HVS 1 & 2

Tablet PC
Gavle

Tests

Transponder spectrum & constellation comparison