QRSS / WSPR Frequencies.
This is the list of QRSS and WSPR watering holes. These are NOT dial frequencies, but the actual RF carrier frequencies which you use for things like QRP Labs U3S transmitters.
2200m
WSPR: 137.500 kHz +/- 100 Hz
QRSS: 137.700 kHz Centre of activity.
1750m
160-190Khz North America only. 185-186Khz being a popular watering hole.
600m
WSPR: 475.700 kHz +/- 100 Hz
QRSS: 476.100 kHz +/- 100 Hz (EU TX window)
160m
WSPR: 1,838.100 kHz +/- 100 Hz
QRSS: 1,837.900 kHz +/- 100 Hz (May vary according to local licensing conditions)
80m
WSPR: 3,570.100 kHz +/- 100 Hz
QRSS: 3,569.900 kHz +/- 100 Hz
60m
WSPR: 5,288.700 kHz +/- 100 Hz (OK for UK but check YOUR local licence conditions)
WSPR 5,366.200 (WRC15 band) +/- 100 Hz (OK for UK but check YOUR local licence conditions)
QRSS: 5,288.550 kHz +/- 50 Hz (OK for the UK, but check YOUR local licence conditions)
Warning, UK band allocation starts only 50Hz lower, be careful.
40m
WSPR: 7,040.100 kHz +/- 100 Hz
QRSS: 7,039.900 kHz +/- 100 Hz
30m
WSPR: 10,140.200 kHz +/- 100 Hz
QRSS: 10,140,100 kHz down to about 10,139,750 kHz (quite a wide band).
22m ISM band (USA and Canada, known as HIFER operations)
WSPR: 13,555,400 kHz
QRSS: 13,555,275 kHz - 13,555,675 kHz (activity seen so far) + 13,555,400 kHz general centre of activity.
Useful database of active stations can be found here - https://www.lwca.net/sitepage/part15/index.htm
Additional note. HIFER ops also appear to use 13.555.600 - 13.567.000 for normal CW speed beacons.
20m
WSPR: 14,097.100 kHz +/- 100 Hz
QRSS 14,096,900 kHz +/- 100 Hz
17m
WSPR: 18,106.100 kHz +/- 100 Hz
QRSS: 18,105.900 kHz +/- 100 Hz
15m
WSPR: 21,096.100 kHz +/- 100 Hz
QRSS: 21,095.900 kHz +/- 100 Hz
12m
WSPR: 24,926.100 kHz +/- 100 Hz
QRSS: 24,925.900 kHz +/- 100 Hz
10m
WSPR: 28,126.100 kHz +/- 100 Hz
QRSS 28,125,900 kHz to 28,126,000 Buffer or bandits band.
QRSS 28,125,700 kHz to 28,125,900 Region 2/3
QRSS 28,125,500 kHz to 28,125,700 Region 1
QRSS: 28.321,600 - 28322,500 Italian Network [Via G6AVK May 2018, may not be active any more]
6m
WSPR: 50.294,500 (+- 100Hz)
QRSS: 50,294,300 kHz +/- 100 Hz
NOTES.
10m is slightly odd, it does not quite follow the adopted tradition of using a 200Hz wide segment below WSPR, but instead can encompass 500Hz instead of just the usual 200Hz. This is due to several factors. Preservation of meteor scatter observations, activity levels across the regions and frequency stability of rigs on the higher bands. Grabber and TX operators please take care to get it right. 22m Hifer band is essentially a 5mw ERP US and Canada band, not for the rest of the world. 30m is quite wide too. Operations have been seen as low as 10.139.700Mhz, the band is popular !