There is only 6 SD channels from RTM currently, namely RTM1, RTM2, Muzik Aktif, Arena, Bes Aktif and RTMi plus 7 RTM radio, namely KlassicFM, MusicFM, KLFM, AiFM, TraxxFM, KlassicFM and MinnalFM.
All the above are on frequency 658MHz UHF channel 44.
The RTM HD channel is on 674MHz UHF channel 46. my USB TV Stick can only receive SD and not HD which use H.264 coding. I can ehar stereo Olympic sound but no video.
However there is not audio at all these few days. Maybe in trial only.
If like the thread above said can receive 30 channels, there mean u r receiving U Mobile DVB-H also which transmitted on frequency 599MHz UHF. DVB-H and DVB-T SD both use MPEG2 coding but normal DVB-T receiver cant decode it as U Mobile signal is for handheld mobile like Nokia N77 and need authetication on U Mobile 3G network.
All transmitted from KL Tower. Boosters have not be installed yet. SG DVB-T has several boosters around the island beside Bkt Timah main UHF transmission site. So there is why can easily receive Mediacorp DVB-T around island.
I was able to watch Olympics for the past 2 days whenever I switched on to RTM-HD channel. I found out that you need a high signal level (close to 90%) in order to get a stable RTM-HD video image, compared to only 70+% is needed for the STD channels. So for those with HD tuner, do adjust your anttena to get better reception if you can't see the RTM-HD video image. I guess this is because of the much higher bit rate for the HD stream (13-15Mb/s).