Difference between revisions of "QO-100 WB Bandplan"

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The QO-100 Wideband Transponder Digital ATV operating guidelines and bandplan were revised in March 2020 and can be found here: [[:Media:QO-100 WB Bandplan V2.0.pdf|QO-100 Bandplan V2.0]].
+
The QO-100 Wideband Transponder Digital ATV operating guidelines and bandplan were revised in February 2021 and can be found here:
 +
 
 +
[[:Media:QO-100 WB Bandplan V3.pdf|QO-100 Bandplan V3 English Version]]
 +
 
 +
[[:Media:QO-100_WB_Bandplan_V3 -FR.pdf|QO-100 Bandplan V3 French Version]]
  
 
The bandplan can also be represented graphically:
 
The bandplan can also be represented graphically:
−
[[File:V2.0 Graphic Final 2.JPG|800px]]
 
  
 +
[[File:V3.0 Graphic Final.JPG|800px]]
  
−
===Power Levels===
+
===Recommended Frequencies===
 +
 
 +
Narrow DATV transmissions of 333 kS or less should use the “Narrow DATV” section, but may use the “Wide and Narrow DATV” section if the Narrow DATV section is fully occupied.  500 kS transmissions should be confined to the “Wide and Narrow DATV” section.
  
−
During March 2020, the beacon bandwidth was reduced to leave more bandwidth for users on the transponder. However, to maintain the data rate, the FEC was increased from 2/3 to 4/5. This meant that to leave the same signal margin for signal decoding, the beacon power density had to be increased by just over 1 dB.
+
The recommended Narrow DATV frequencies in the new bandplan are all now at 250 kHz spacing, with alternate channels (*.250 and *.750) designated for 333 kS and 250 kS.
  
−
What this means is that user signal power densities (for QPSK) should now be limited to 1 dB lower than the beacon. This can clearly be seen on the spectrum monitor, and the overpower indication trigger limit has been adjusted.  For signals of 333 kS and below (only), it is acceptable to exceed this marging if 8PSK, 16 APSK or 32 APSK modes are being used.
+
Regular nets should use 10499.25 MHz and 333 kS when possible.
  
−
===Recommended Frequencies===
+
{| class="wikitable"
 +
! scope="col" | Type || scope="col" | Ch No || scope="col" | Downlink || scope="col" | Uplink || scope="col" | Symbol_Rate
 +
|-
 +
| style="font-weight:bold;" | Beacon  ||  |  || style="font-weight:bold;" | 10491.5 || style="font-weight:bold;" | 2402 || style="font-weight:bold;" | 1500 (FEC:4/5)
 +
|-
 +
| style="font-weight:bold;" | Wide ||  | 1 ||  | 10493.25 ||  | 2403.75 || 1000/1500
 +
|-
 +
|  ||  | 2 ||  | 10494.75 ||  | 2405.25 || 1000/1500
 +
|-
 +
|  ||  | 3 ||  | 10496.25 ||  | 2406.75 || 1000/1500
 +
|-
 +
| style="font-weight:bold;" | Narrow ||  | 1 ||  | 10492.75 ||  | 2403.25 || 500/333/250
 +
|-
 +
|  ||  | 2 ||  | 10493.25 ||  | 2403.75 || 500/333/250
 +
|-
 +
|  ||  | 3 ||  | 10493.75 ||  | 2404.25 || 500/333/250
 +
|-
 +
|  ||  | 4 ||  | 10494.25 ||  | 2404.75 || 500/333/250
 +
|-
 +
|  ||  | 5 ||  | 10494.75 ||  | 2405.25 || 500/333/250
 +
|-
 +
|  ||  | 6 ||  | 10495.25 ||  | 2405.75 || 500/333/250
 +
|-
 +
|  ||  | 7 ||  | 10495.75 ||  | 2406.25 || 500/333/250
 +
|-
 +
|  ||  | 8 ||  | 10496.25 ||  | 2406.75 || 500/333/250
 +
|-
 +
|  ||  | 9 ||  | 10496.75 ||  | 2407.25 || 500/333/250
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 10 || style="background-color: #dcdcdc;" | 10497.25 || style="background-color: #dcdcdc;" | 2407.75 || style="background-color: #dcdcdc;" | 333/250
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 11 || style="background-color: #dcdcdc;" | 10497.75 || style="background-color: #dcdcdc;" | 2408.25 || style="background-color: #dcdcdc;" | 333/250
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 12 || style="background-color: #dcdcdc;" | 10498.25 || style="background-color: #dcdcdc;" | 2408.75 || style="background-color: #dcdcdc;" | 333/250
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 13 || style="background-color: #dcdcdc;" | 10498.75 || style="background-color: #dcdcdc;" | 2409.25 || style="background-color: #dcdcdc;" | 333/250
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 14 || style="background-color: #dcdcdc;" | 10499.25 || style="background-color: #dcdcdc;" | 2409.75 || style="background-color: #dcdcdc;" | 333/250
 +
|-
 +
| style="font-weight:bold;" | Very Narrow ||  | 1 ||  | 10492.75 ||  | 2403.25 || 125/66/33
 +
|-
 +
|  ||  | 2 ||  | 10493 ||  | 2403.5 || 125/66/33
 +
|-
 +
|  ||  | 3 ||  | 10493.25 ||  | 2403.75 || 125/66/33
 +
|-
 +
|  ||  | 4 ||  | 10493.5 ||  | 2404 || 125/66/33
 +
|-
 +
|  ||  | 5 ||  | 10493.75 ||  | 2404.25 || 125/66/33
 +
|-
 +
|  ||  | 6 ||  | 10494 ||  | 2404.5 || 125/66/33
 +
|-
 +
|  ||  | 7 ||  | 10494.25 ||  | 2404.75 || 125/66/33
 +
|-
 +
|  ||  | 8 ||  | 10494.5 ||  | 2405 || 125/66/33
 +
|-
 +
|  ||  | 9 ||  | 10494.75 ||  | 2405.25 || 125/66/33
 +
|-
 +
|  ||  | 10 ||  | 10495 ||  | 2405.5 || 125/66/33
 +
|-
 +
|  ||  | 11 ||  | 10495.25 ||  | 2405.75 || 125/66/33
 +
|-
 +
|  ||  | 12 ||  | 10495.5 ||  | 2406 || 125/66/33
 +
|-
 +
|  ||  | 13 ||  | 10495.75 ||  | 2406.25 || 125/66/33
 +
|-
 +
|  ||  | 14 ||  | 10496 ||  | 2406.5 || 125/66/33
 +
|-
 +
|  ||  | 15 ||  | 10496.25 ||  | 2406.75 || 125/66/33
 +
|-
 +
|  ||  | 16 ||  | 10496.5 ||  | 2407 || 125/66/33
 +
|-
 +
|  ||  | 17 ||  | 10496.75 ||  | 2407.25 || 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 18 || style="background-color: #dcdcdc;" | 10497 || style="background-color: #dcdcdc;" | 2407.5 || style="background-color: #dcdcdc;" | 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 19 || style="background-color: #dcdcdc;" | 10497.25 || style="background-color: #dcdcdc;" | 2407.75 || style="background-color: #dcdcdc;" | 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 20 || style="background-color: #dcdcdc;" | 10497.5 || style="background-color: #dcdcdc;" | 2408 || style="background-color: #dcdcdc;" | 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 21 || style="background-color: #dcdcdc;" | 10497.75 || style="background-color: #dcdcdc;" | 2408.25 || style="background-color: #dcdcdc;" | 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 22 || style="background-color: #dcdcdc;" | 10498 || style="background-color: #dcdcdc;" | 2408.5 || style="background-color: #dcdcdc;" | 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 23 || style="background-color: #dcdcdc;" | 10498.25 || style="background-color: #dcdcdc;" | 2408.75 || style="background-color: #dcdcdc;" | 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 24 || style="background-color: #dcdcdc;" | 10498.5 || style="background-color: #dcdcdc;" | 2409 || style="background-color: #dcdcdc;" | 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 25 || style="background-color: #dcdcdc;" | 10498.75 || style="background-color: #dcdcdc;" | 2409.25 || style="background-color: #dcdcdc;" | 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 26 || style="background-color: #dcdcdc;" | 10499 || style="background-color: #dcdcdc;" | 2409.5 || style="background-color: #dcdcdc;" | 125/66/33
 +
|-
 +
|  || style="background-color: #dcdcdc;" | 27 || style="background-color: #dcdcdc;" | 10499.25 || style="background-color: #dcdcdc;" | 2409.75 || style="background-color: #dcdcdc;" | 125/66/33
 +
|}
  
−
Narrow DATV transmissions should be confined to the “Narrow DATV” section, but may use the “Wide and Narrow DATV” section if the Narrow DATV section is fully occupied.
+
===Power Levels===
  
−
The recommended Narrow DATV frequencies in the new bandplan are all now at 250 kHz spacing, with alternate channels (*.250 and *.750) designated for 333 kS and 250 kS.  
+
During March 2020, the beacon bandwidth was reduced to leave more bandwidth for users on the transponder.  However, to maintain the data rate, the FEC was increased from 2/3 to 4/5. This meant that to leave the same signal margin for signal decoding, the beacon power density had to be increased by just over 1 dB.
  
−
[[File:Bandplan V2.0 Table.JPG|552px]]
+
What this means is that user signal power densities (for QPSK) should now be limited to 1 dB lower than the beacon. This can clearly be seen on the spectrum monitor, and the overpower indication trigger limit has been adjusted.  For signals of 333 kS and below (only), it is acceptable to exceed this margin if 8PSK, 16 APSK or 32 APSK modes are being used.

Latest revision as of 13:08, 3 July 2021

The QO-100 Wideband Transponder Digital ATV operating guidelines and bandplan were revised in February 2021 and can be found here:

QO-100 Bandplan V3 English Version

QO-100 Bandplan V3 French Version

The bandplan can also be represented graphically:

V3.0 Graphic Final.JPG

Recommended Frequencies

Narrow DATV transmissions of 333 kS or less should use the “Narrow DATV” section, but may use the “Wide and Narrow DATV” section if the Narrow DATV section is fully occupied. 500 kS transmissions should be confined to the “Wide and Narrow DATV” section.

The recommended Narrow DATV frequencies in the new bandplan are all now at 250 kHz spacing, with alternate channels (*.250 and *.750) designated for 333 kS and 250 kS.

Regular nets should use 10499.25 MHz and 333 kS when possible.

Type Ch No Downlink Uplink Symbol_Rate
Beacon 10491.5 2402 1500 (FEC:4/5)
Wide 1 10493.25 2403.75 1000/1500
2 10494.75 2405.25 1000/1500
3 10496.25 2406.75 1000/1500
Narrow 1 10492.75 2403.25 500/333/250
2 10493.25 2403.75 500/333/250
3 10493.75 2404.25 500/333/250
4 10494.25 2404.75 500/333/250
5 10494.75 2405.25 500/333/250
6 10495.25 2405.75 500/333/250
7 10495.75 2406.25 500/333/250
8 10496.25 2406.75 500/333/250
9 10496.75 2407.25 500/333/250
10 10497.25 2407.75 333/250
11 10497.75 2408.25 333/250
12 10498.25 2408.75 333/250
13 10498.75 2409.25 333/250
14 10499.25 2409.75 333/250
Very Narrow 1 10492.75 2403.25 125/66/33
2 10493 2403.5 125/66/33
3 10493.25 2403.75 125/66/33
4 10493.5 2404 125/66/33
5 10493.75 2404.25 125/66/33
6 10494 2404.5 125/66/33
7 10494.25 2404.75 125/66/33
8 10494.5 2405 125/66/33
9 10494.75 2405.25 125/66/33
10 10495 2405.5 125/66/33
11 10495.25 2405.75 125/66/33
12 10495.5 2406 125/66/33
13 10495.75 2406.25 125/66/33
14 10496 2406.5 125/66/33
15 10496.25 2406.75 125/66/33
16 10496.5 2407 125/66/33
17 10496.75 2407.25 125/66/33
18 10497 2407.5 125/66/33
19 10497.25 2407.75 125/66/33
20 10497.5 2408 125/66/33
21 10497.75 2408.25 125/66/33
22 10498 2408.5 125/66/33
23 10498.25 2408.75 125/66/33
24 10498.5 2409 125/66/33
25 10498.75 2409.25 125/66/33
26 10499 2409.5 125/66/33
27 10499.25 2409.75 125/66/33

Power Levels

During March 2020, the beacon bandwidth was reduced to leave more bandwidth for users on the transponder. However, to maintain the data rate, the FEC was increased from 2/3 to 4/5. This meant that to leave the same signal margin for signal decoding, the beacon power density had to be increased by just over 1 dB.

What this means is that user signal power densities (for QPSK) should now be limited to 1 dB lower than the beacon. This can clearly be seen on the spectrum monitor, and the overpower indication trigger limit has been adjusted. For signals of 333 kS and below (only), it is acceptable to exceed this margin if 8PSK, 16 APSK or 32 APSK modes are being used.

Retrieved from ‘https://wiki.batc.org.uk/index.php?title=QO-100_WB_Bandplan&oldid=8611’