It is possible to control what type of DX you see by setting reject filters. Filters enable you to customise the DX you receive from CLX so that it is valid to the way you operate. For example, you may only be interested in CW or RTTY. Or maybe you only wish to receive spots on the bands above 30 MHz. These filters are set by the sysop and the ones that are currently usable can be seen by using the SHOW/FILTERS command.
This command will return something like this ...
(1) - VHF 144000.0-100000000.0 (2) - HF 0.0-30000.0 (3) - TOP 1800.0-2000.0 (4) - CW 1800.0-1840.0 3500.0-3600.0 7000.0-7040.0 10100.0-10140.0 14000.0-14099.9 18068.0-18100.0 21000.0-21150.0 24890.0-24930.0 28000.0-28200.0 50000.0-50100.0 144000.0-144150.0 432000.0-432150.0 1296000.0-1296150.0 2320000.0-2320150.0 10368000.0-10370000.0 24048000.0-24050000.0 (5) - SSB 1840.0-2000.0 3600.0-3800.0 7040.0-7100.0 14100.0-14350.0 18110.0-18168.0 21150.0-21450.0 24930.0-24990.0 28200.0-29200.0 50100.0-50500.0 144150.0-144400.0 432150.0-432500.0 1296150.0-1296800.0 2320150.0-2320800.0 10368000.0-10370000.0 24048000.0-24050000.0 (6) - RTTY 1838.0-1842.0 3580.0-3620.0 7035.0-7045.0 10140.0-10150.0 14070.0-14100.0 18100.0-18110.0 21080.0-21120.0 24920.0-24930.0 28050.0-28151.0 (7) - WARC 10100.0-10150.0 18068.0-18168.0 24890.0-24990.0
Remember these are reject filters, so if you set filter number 7 you would NOT see any spots from the bands 10100-10150 MHz, 18068-18168 MHz and 24890-24990 MHz. It is possible to set multiple filters to enable you to get exactly the DX you prefer. If you find that the current filters do not quite work the way you wish, your friendly CLX sysop can set others for you.
To set a filter, you first need to decide what you do not wish to receive. If it is something simple like only wanting to receive DX on the HF bands, then all you have to do is set the VHF filter. If you wish to only receive spots on HF using CW, then you would set the VHF and SSB filters and maybe RTTY too.
Filter 1 is VHF in our example so you would not now receive spots posted above 30 Mhz. You might also not wish to receive spots posted on the SSB section of the bands.
You can now check what filters you have set with the SHOW/FILTER command. This would output the following for our example.
(1) - VHF 144000.0-100000000.0 (5) - SSB 1840.0-2000.0 3600.0-3800.0 7040.0-7100.0 14100.0-14350.0 18110.0-18168.0 21150.0-21450.0 24930.0-24990.0 28200.0-29200.0 50100.0-50500.0 144150.0-144400.0 432150.0-432500.0 1296150.0-1296800.0 2320150.0-2320800.0 10368000.0-10370000.0 24048000.0-24050000.0
You can remove filters one by one or all at a time. On its own, the command SET/NOFILTER will remove all filters you have set currently.
would remove all filters you have set but the command,
would only remove the VHF filter in our example, leaving filter 5 (SSB) still set.