No U.S. digital tv station can go beyond 1000 KW ERP.
To be clear, they will be on the same channel and height as their analog broadcast. Compared to their transitional DTV broadcast, they will be on VHF instead of UHF, have better elevation and only slightly less power.CFTO's ERP post transition is gonna be like 15 dB down from current ERP,
on the same channel, at the same height.
The comparison is not valid because the NTSC and ATSC signal are completely different. In NTSC, the maximum ERP corresponds to the sync tips (negative modulation). A 100 KW transmitter is only at full power during the sync tips while the maximum video is about 66 KW when the station is sending black. At maximum white, ERP will be around 5 KW. The sound is transmitted with a separate FM transmitter which operates with a consistent power output. Energy across the TV channel is concentrated around the visual carrier, colour sub-carrier and the aural carrier....looking at Stampeder's station status, seems i may be in the same boat with CFTO/CTV as most canadians from Toronto/Hamilton are with WNGS.
CFTO's ERP post transition is gonna be like 15 dB down from current ERP,
on the same channel, at the same height. didn't realize that till now.
be interesting if it works here.
10 * log (10800 / 325000) = -14.8 dB
Isn't this only true for UHF? I gather that post transition in the US they discovered that VHF-HI requires about 10 dB more power than anticipated and VHF-LO requires 15 to 20 dB more power than anticipated.Hence, many Digital average ERP power allocations are 12 dB LOWER than Analog Peak ERP power allocation....BUT ONLY IF they are on the SAME frequency.