The XBOX360 does not connect via any RF channels (TV aerial). It connects through either the analogue video & audio inputs e.g. SCART or PHONO connectors, or via HDMI (which will not be supported on your old TV). If you have connected via the SCART or PHONO type then you can select 'AV' or 'EXT' via the remote to get input from the SCART/PHONO.
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The XBOX360 does not connect via any RF channels (TV aerial). It connects through either the analogue video & audio inputs e.g. SCART or PHONO connectors, or via HDMI (which will not be supported on your old TV). If you have connected via the SCART or PHONO type then you can select 'AV' or 'EXT' via the remote to get input from the SCART/PHONO.