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1991: KTCA staffers assemble and paint our current antenna.
(We hired a tower crew to lift these elements up the Shoreview tower.)
Transmitter & Tower Technical Data
|
|
Visual |
Aural |
| Frequency |
55.240 MHz |
59.740 MHz |
| Effective Radiated Power |
100.00 kW |
20 dBk |
20.0 kW |
11.76 dBk |
| Antenna gain |
5.99 rms |
7.77 dBd |
5.99 rms |
7.77 dBd |
| Power fed to antenna |
16.69 kW |
12.24 dBk |
3.34 kW |
3.99 dBk |
| Power lost in line (-22.05%) |
4.49 kW |
-1.03 dB |
.90 kW |
-1.03 dB |
| Diplexer loss |
|
-.05 dB |
|
-.18 dB |
| Transmitter output power |
21.5 kW peak |
13.32 dBk |
3.31 kW |
5.20 dBk |
| Average to peak power conversion |
x 1.68 |
2.25 dB |
--
|
0 dB |
| Transmitter power |
12.61 kW |
11.07 dBk |
4.24 kW |
5.20 dBk |
| Antenna feed line |
1360 feet of 3 1/8" 50 ohm line |
| Antenna center height above ground level |
1325 feet |
|
Visual |
Aural |
| Frequency |
493.75 MHz |
489.25 MHz |
| Effective Radiated Power |
331 kW |
25.2 dBk |
33.1 kW |
15.20 dBk |
| Antenna gain |
47.91 rms |
16.80 dBd |
47.91 rms |
6.80 dBd |
| Power fed to antenna |
6.91 kW |
8.40 dBk |
.691 kW |
-1.49 dBk |
| Power lost in line (-30%) |
3.06 kW |
-1.55 dB |
.296 kW |
-1.55 dB |
| Transmitter output power |
9.87 kW peak |
9.95 dBk |
.987 kW |
-.06 dBk |
| Average to peak power conversion |
x 1.68 |
2.25 dB |
--
|
0 dB |
| Transmitter power |
5.88 kW |
7.70 dBk |
.987 kW |
-.06 dBk |
| Antenna feed line |
1275 feet of 6 1/8" 75 ohm line (1.3706 dB loss)
80 feet of 3 1/8" 50 ohm line (.1832 dB loss)
1355 feet total |
| Antenna center height above ground level |
1325 feet |
|
DTV |
| Frequency |
482 - 488 MHz |
| Effective Radiated Power |
50 kW |
16.99 dBk |
| Antenna gain |
47.91 rms |
16.80 dBd |
| Power fed to antenna |
1.04 kW |
.190 dBk |
| Power lost in line (-30%) |
.44kW |
-1.55 dB |
| Filter loss |
8% |
-1 dB |
| Transmitter output power |
5.92 kW peak |
7.74 dBk |
| Average to peak power conversion |
x 4 |
6 dB |
| Transmitter power |
1.48 kW |
1.74 dBk |
| Antenna feed line |
1275' of 6 1/8" 75 ohm line (1.3706 dB loss)
80' of 3 1/8" 50 ohm line (.1832 dB loss)
Total feed line length = 1355 feet |
| Antenna center height above ground level |
1325 feet |
COUNTIES KTCI COVERS TO GRADE B
| MINNESOTA |
| COUNTY |
POPULATION |
AREA % OF COVERAGE |
VIEWERS |
Anoka
|
258,988 |
100 |
258,988 |
| Carver |
51,985 |
50 |
25,993 |
| Chisago |
32,371 |
50 |
16,186 |
| Dakota |
296,072 |
80 |
236,858 |
| Hennepin |
1,041,332 |
100 |
1,041,332 |
| Isanti |
26,643 |
50 |
13,322 |
| LeSueur |
23,520 |
3 |
706 |
| Ramsey |
486,065 |
100 |
486,065 |
| Rice |
50,361 |
15 |
7,554 |
| Scott |
62,257 |
80 |
49,806 |
| Sherburne |
45,895 |
35 |
16,063 |
| Washington |
158,373 |
100 |
158,373 |
| Wright |
72,430 |
25 |
18,108 |
| WISCONSIN |
| COUNTY |
POPULATION |
AREA % OF COVERAGE |
VIEWERS |
| Pierce |
32,765 |
33 |
11,140 |
| Polk |
34,773 |
20 |
6,955 |
| St.Croix |
50,251 |
33 |
17,085 |
| |
|
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| TOTAL POPULATION TO EDGE OF GRADE: 2,107,600 |
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