QO-100 WB Bandplan

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:

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.