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Thread: Ratings - Fish

  1. #21

    Join Date
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    Quote Originally Posted by DavidEduardo View Post


    They also protect WAPA, the only higher power non-directional station on 680 in the Eastern USA.

    So no signal to the southeast, either.
    That would eliminate Canton, then. The WCNN night pattern seems to aim mostly southwestward today, and that would explain why. But WDUN Gainesville would be an option if they could thread the needle and send all the power southwestward, basically along and either side of the I-85 corridor. That would pick up Forsyth and Gwinnett and Cobb countie$$$. Cherokee would be a wash or maybe a little improvement.

    The WDUN night pattern looks like this: https://radio-locator.com/cgi-bin/pa...service=AM&h=N
    Just rotate it 90 degrees clockwise and up the power from 2500W to 10kW, and bigger nulls north of the site.
    One concern from looking at both their day and night patterns is that they may be topographically compromised going towards the metro area--seems to be an ongoing concern with stations to the northeast of town, trying to get over Peachtree and the other ridges, which is evident with WXKT and WDUN-FM and WBCX as well.

    They could continue to do days from their plant off Spalding in Ptree Corners, using two towers, and nights from the WDUN site in Gainesville. Covering Brookhaven (fka North Atlanta) shouldn't be an issue. And they could tear down 6 of their 8 towers and liquidate some of that real estate in a pricey part of town--although a lot of it is in a floodplain.

    Of course, the usual questions remain--what is the ROI on improving an AM facility these days? Can they pull off the required night pattern? What would be the loss of using antennas tuned to 550kHz and not 680kHz?
    "When broadcasting over the radio, there are certain words we must omit.
    Like 'BEEP' and 'BUZZ' and 'GOBBLE-GOBBLE', by gosh we can't even say shhhhhaving cream!"

  2. #22
    I don't know enough to judge whether your WDUN site would work from an interference standpoint. But, isn't Gainesville awfully far away for a 10,000-watt AM station intending to cover Atlanta? I've gotten another station in the background of WCNN in downtown.

  3. #23
    Quote Originally Posted by RoddyFreeman View Post
    I don't know enough to judge whether your WDUN site would work from an interference standpoint. But, isn't Gainesville awfully far away for a 10,000-watt AM station intending to cover Atlanta? I've gotten another station in the background of WCNN in downtown.
    IMHO if they could make it work, they should try for 25 or more KW. There are some really crowded Class B frequencies in the southeast like 1070* were you have 3 @ 50 KW within 200 miles. 1010 in NYC managed 50KW being really close to Canada thanks to a directional antenna farm. IIRC the nighttime sky-wave "protection" is not that tough outside the daytime coverage areas for class B's. The extra wattage should fend off Raleigh's 680


    * https://radio-locator.com/cgi-bin/lo...1070&sort=freq
    Last edited by secondchoice; Today at 08:57 AM.

  4. #24

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    Quote Originally Posted by secondchoice View Post
    IMHO if they could make it work, they should try for 25 or more KW. There are some really crowded Class B frequencies in the southeast like 1070* were you have 3 @ 50 KW within 200 miles. 1010 in NYC managed 50KW being really close to Canada thanks to a directional antenna farm. IIRC the nighttime sky-wave "protection" is not that tough outside the daytime coverage areas for class B's. The extra wattage should fend off Raleigh's 680


    * https://radio-locator.com/cgi-bin/lo...1070&sort=freq
    If they went hard directional to the SW, they could--and might have to--go 25kW or greater. I'm not an RF engineer but wouldn't a lot of that power be required to null out everything not going SW?

    WDUN gets a decent night signal into Gwinnett with their 2500W DA--decent enough to do PXP for the G-Braves and the Glads until Cox snatched them and put them on TOSOTR.
    "When broadcasting over the radio, there are certain words we must omit.
    Like 'BEEP' and 'BUZZ' and 'GOBBLE-GOBBLE', by gosh we can't even say shhhhhaving cream!"

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