Neil, in Albany from Mount Clarence ABC broadcasts its digital TV sub channels on channel 8, with unusual vertical polarisation, while SBS's digital sub channels are broadcast on channel 41, also vertically. The power of the transmitters are 25 and 150 watts respectively. Compare that with Perth where the power ranges from 50 to 200 kW; that's about 200 times more power!
>From Mt Barker ABC broadcasts its digital TV sub channels on channel 11, with >unusual vertical polarisation, while SBS's digital sub channels are broadcast >on channel 29, also vertically. The power of these transmitters are a more >respectable 50kW and 200 kW respectively. Because of the vertical polarisation your 'rabbit ears' will work best on their side, with one 'ear' straight up, and one straight down. Directionality would therefore be irrelevant. You should be able to determine which digital transmitters you are receiving by finding the frequencies of the stations. Your receiver's manual should tell you how to determine the frequency of a digital service. You possible digital channels and their frequencies are: Ch 8 191.625 MHz Ch 11 219.5 MHz Ch 29 536.625 MHz Ch 41 620.625 MHz Proposed new digital transmissions from Mt Barker are: SSW9 Ch12 Vertical Polarisation 50 kW WOW9A Ch32 Vertical Polarisation 200 kW Commercial Ch35 Vertical Polarisation 200 kW Unassigned Ch38 Vertical Polarisation 300 kW Unassigned Ch39 Vertical Polarisation 300 kW Note that throughout I list the actual broadcast channels, and not the silly, illogical, 'logical channels' that the broadcasters use for illiterate consumers. I hope the above helps you improve your reception. On 02/12/2011, at 3:55 PM, Neil Houghton wrote: > Hmmm > > Very interesting - and I wouldn't want to argue with your facts - however, > it doesn't really reflect my experience. > > I only have the "rabbit ears" type indoor antenna and analogue reception was > (to be expected) poor/hard work so I was expecting to NEED an external > antenna when I went digital. > > However, to my surprise I can get digital OK :o) > > Tuning the antenna is trickier since the digital looks perfect until it > doesn't - that is the picture starts to pixellate and/or the sound drops > in/out. > > My method, since the analogue & digital come from the same transmitter, is > to switch the TV to analogue and play with the aerial until I get the best > picture (still pretty bad/snowy on SBS) and then switch back to digital and > watch my perfect picture. - its then OK till the next time somebody knock > the antenna ;o( > > I do realise it would be better to get a good external aerial (one of these > days) but I certainly find, even with my poor antenna, that digital > reception is much better than analogue. > > Note: this is in Albany with just SBS and ABC digital channels - they are > just about to FINALLY give us commercial digital channels (not that I've > missed them really) so it will be interesting to see in the experience still > holds. > > > Cheers > > > Neil > -- > Neil R. Houghton > Albany, Western Australia > Tel: +61 8 9841 6063 > Email: [email protected] Regards, Ray Forma Mob +61 (0) 428 596938 -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>
