SNR difference TP1-TP2
	SNR difference TP1 - TP2 From two separate Ayecka SR1
Link Margin (some are calculated)
Transponder C3 - EUTELSAT 10A 11263V C3
	TBS6903 TP2 on EUTELSAT 10A C3
	Ayecka SR1 #3 TP2 on EUTELSAT 10A C3
Transponder C4 - EUTELSAT 10A 11263H
	Ayecka SR1 #2 TP1 on EUTELSAT 10A C4 HVS-1 link margin
TelliCast - lost packets
Transponder C3 - EUTELSAT 10A 11263V
	HVS-2 lost packets TP2 PC Lund TBS6903
Transponder C4 - EUTELSAT 10A 11263H
	HVS-1 lost packets TP1 PC Kiruna Ayecka SR1 #2
Traffic
Transponder C3 - 10A 11263V
	TBS6903 MODCOD: 16APSK2/3 All PIDs
	Ayecka SR1 #3 MODCOD: 16APSK2/3 PIDs: 610
	Ayecka SR1 #3 MODCOD: 16APSK2/3 PIDs: 610 PC Oslo HVS-2 traffic
Transponder C4 - 10A 11263H
	Ayecka SR1 #2 BAS & HVS-1 MODCOD: 8PSK3/5 16APSK2/3 PIDs: 100 500 600 601
	Ayecka SR1 #2 BAS & HVS-1 PC Kiruna HVS-1 traffic
	Ayecka SR1 #2 BAS & HVS-1 PC Oslo [BAS]/HVS-1 traffic
SNR - signal-to-noise ratio
Transponder C3 - 10A 11263V
	TBS6903 TP2
	Ayecka SR1 #3 TP2
Transponder C4 - 10A 11263H
	Ayecka SR1 #2 TP1
BER - bit error rate
Transponder C3 - 10A 11263V
	TBS6903 TP2
	Ayecka SR1 #3 TP2
Transponder C4 - 10A 11263H
	Ayecka SR1 #2 TP1
RF level - higher plot means lower signal
Transponder C3 - 10A 11263V
	TBS6903 TP2
	Ayecka SR1 #3 TP2
Transponder C4 - 10A 11263H
	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-2, and output four allows direct access to the LNB for polarisation tests, which would otherwise interfere with routine reception.

Multiple 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. Ayecka SR1 #2 receiver takes only HVS-1, received and processed by PC Kiruna, and received by PC Lund, processed by PC Penguin.. From Feb-2017 PC Lund monitors HVS-1 & HVS-2 with a single-cable TBS6903 dual-tuner PCIe card, but this arrangement had to be abandoned when HVS-2 was switched to a transponder with a different polarisation in late 2023..

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 EUTELSAT 10A

Output 1

Output 2

Output 3

Output 4

2-way splitter

DC-pass

RF only

DC-pass

RF only

Ayecka
SR1 #1
BAS only

(spare)
TBS5927

Ayecka
SR1 #2
BAS & HVS-1

TBS6903
dual-tuner
PCIe

Ayecka
SR1 #3
HVS-2 only

TBS5925
box
USB pass-through

1 Gbps
Ethernet

PCIe
card

1 Gbps
Ethernet

USB 2.0
|

||
||

Airspy SDR Mini
hardware

<======Private

LAN

===>

<==Private

LAN

=v== |

=v |

| |

i5-760 PC
Alta
Receive BAS
Process BAS

i5-4460 PC
Harstad
Receive BAS

i5-8400 PC
Penguin
BAS recv & process
HVS-1 process

i7-4770K PC
Kiruna
BAS process
HVS-1 receive
HVS-1 process

i5-6400 PC
Lund
Recv HVS-1
Recv HVS-2

i7-10700- PC
Oslo
Recv HVS-1
Recv HVS-2

Tablet test PC
Vega
BDADataEx CrazyScan
SDR# Spectrum Spy
Smart DVB & TS analyser

Transponder spectrum & constellation comparison