I just got my new HD TV fired up this week...I'm impressed...especially with PBS.
I live in Finley, WA (South East of Kennewick) and I decided to do some RF measurements on the TV signals I'm receiving on my antenna (a Channel Master 4221).
I use a 4 way splitter to go to my TV, VCR and DVD-R...the fourth tap is capped with a 75 ohm terminator. I do not use a preamp....although these measurements are showing I need one!
Using the FCC database search features I found the frequencies for both NTSC (analog) and digital channels. I measured the amplitude using an IFR spectrum analyzer (I'm a communications technician) by using the last connection on my four-way splitter.
Here's the results...
Channel 9 KCWK
NTSC 186-192 MHz Transmitting at 316 KWatts I received at -80dBm
Digital 186-192 MHz (They are not transmitting yet! But the FCC license is asking for 45 KWatts)
Channel 11 KFFX
NTSC 198-204 MHz Transmitting at 316 KWatts I received at -70dBm
Digital 180-186 MHz Transmitting at 6 KWatts I wasn't able to see this
Channel 19 KEPR
NTSC 500-506 MHz Transmitting at 490 KWatts I received at -50dBm
Digital 494-500 MHz Transmitting at 5.3 KWatts I received at -75dBm
Channel 25 KNDU
NTSC 536-542 MHz Transmitting at 661 KWatts I received at -35 dBm
Digital 542-548 MHz Transmitting at 33 KWatts I received at -80 dBm
Channel 31 KTNW
NTSC 572-578 MHz Transmitting at 70.8 KWatts I received at -45 dBm
Digital 614-620 MHz Transmitting at 47.6 KWatts I received at -65 dBm
Channel 42 KVEW
NTSC 638-644 MHz Transmitting at 501 KWatts I received at -40 dBm
Digital 650-656 MHz Transmitting at 61 KWatts I received at -85 dBm
NTSC 782-788 MHz Transmitting at 12 KWatts I received at -65 dBm
Digital 602-608 MHz Transmitting at 6.5 KWatts I received at -85 dBm
For the non-techy types...the last number is the most important...the closer to zero the better/stronger the signal I'm receiving on my antenna. So, Channel 31 is the strongest digital station and Channel 25 is the strongest analog station.
Just thought you'd like to know what I found out...