High End 20 M SSB contest station
Competitive contest stations use big antennas in an effort to contact even the smallest and most remote stations.
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.15-14.35 |
|
Channel Spacing |
Random |
|
Information Rate |
speech |
|
Emission Type(s) |
2K50J3E |
|
Transmitter Power (dBW) |
31.7 |
|
Transmission Line Loss (dB) |
Transmit: .4 Receive: 0.4 |
|
Antenna Polarization |
Horizontal |
|
Antenna Maximum Gain (dBi) |
17 |
|
Maximum e.i.r.p. (dBW) |
48.3 |
|
Receiver IF Bandwidth |
2500 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-149 (29000 Kelvin background) |
|
Receiver Signal-to-Noise Ratio (dB) |
+6 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
Availability Target % |
|
|
Maximum Path Length (km) |
|
Stacked yagis in the Antenna book feed with 200 ft of Hardline in a quiet rural location.
Typical 20M SSB contest station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.15-14.35 |
|
Channel Spacing |
Random |
|
Information Rate |
speech |
|
Emission Type(s) |
2K50J3E |
|
Transmitter Power (dBW) |
31.7 |
|
Transmission Line Loss (dB) |
Transmit: .6 Receive: 0.6 |
|
Antenna Polarization |
Horizontal |
|
Antenna Maximum Gain (dBi) |
14 |
|
Maximum e.i.r.p. (dBW) |
46.1 |
|
Receiver IF Bandwidth |
2500 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-145 |
|
Receiver Signal-to-Noise Ratio (dB) |
+6 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
Availability Target % |
|
|
Maximum Path Length (km) |
|
Single 4 element yagi in a typical suburban location. Height primarily affects the vertical pattern but not the maximum gain.
High End 20M CW contest station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.0-14.100 |
|
Channel Spacing |
Random |
|
Information Rate |
10 bit/sec |
|
Emission Type(s) |
100HA1A |
|
Transmitter Power (dBW) |
31.7 |
|
Transmission Line Loss (dB) |
Transmit: .4 Receive: 0.4 |
|
Antenna Polarization |
Horizontal |
|
Antenna Maximum Gain (dBi) |
17 |
|
Maximum e.i.r.p. (dBW) |
48.3 |
|
Receiver IF Bandwidth |
CW:100 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-149 |
|
Receiver Signal-to-Noise Ratio (dB) |
+6 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
|
Typical 20 M SSB Amateur Station
The typical SSB amateur station communicates with other SSB using F layer propagation.
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.15-14.35 |
|
Channel Spacing |
Random |
|
Information Rate |
Speech |
|
Emission Type(s) |
2K50J3E |
|
Transmitter Power (dBW) |
31.7 |
|
Transmission Line Loss (dB) |
Transmit: .6 Receive: 0.6 |
|
Antenna Polarization |
Horizontal |
|
Antenna Maximum Gain (dBi) |
12 |
|
Maximum e.i.r.p. (dBW) |
43.1 |
|
Receiver IF Bandwidth |
SSB:2500 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-145 |
|
Receiver Signal-to-Noise Ratio (dB) |
+6 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
Depends on propagation mode |
Legal limit amp and a small tribander like the Force 12 C3 (12’ boom). Tribander has 4.5 dB gain over a dipole.
Typical 20M CW Amateur Station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.0-14.1 |
|
Channel Spacing |
Random |
|
Information Rate |
10 bit/s |
|
Emission Type(s) |
100HA1A |
|
Transmitter Power (dBW) |
20 |
|
Transmission Line Loss (dB) |
Transmit: .5 Receive: 0.5 |
|
Antenna Polarization |
Horizontal |
|
Antenna Maximum Gain (dBi) |
8 |
|
Maximum e.i.r.p. (dBW) |
27.5 |
|
Receiver IF Bandwidth |
CW:100Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-159 |
|
Receiver Signal-to-Noise Ratio (dB) |
+1 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
Depends on propgation mode |
High End 20 M Digital Amateur Station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.0-14.1 |
|
Channel Spacing |
Random |
|
Information Rate |
45-300 bit/sec |
|
Emission Type(s) |
Many different types |
|
Transmitter Power (dBW) |
31.7 |
|
Transmission Line Loss (dB) |
Transmit: .4 Receive: .4 |
|
Antenna Polarization |
Horizontal |
|
Antenna Maximum Gain (dBi) |
17 |
|
Maximum e.i.r.p. (dBW) |
48.3 |
|
Receiver IF Bandwidth |
500 |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-152 |
|
Receiver Signal-to-Noise Ratio (dB) |
+3 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
Depends on the propagation mode |
Typical 20M Digital Amateur Station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.0-14.1 |
|
Channel Spacing |
Random |
|
Information Rate |
45-300 bit/sec, 0-300 bit/sec worst case |
|
Emission Type(s) |
Many different types |
|
Transmitter Power (dBW) |
17 |
|
Transmission Line Loss (dB) |
Transmit: .6 Receive: .6 |
|
Antenna Polarization |
Horizontal |
|
Antenna Maximum Gain (dBi) |
8 |
|
Maximum e.i.r.p. (dBW) |
24.4 |
|
Receiver IF Bandwidth |
500 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-152 |
|
Receiver Signal-to-Noise Ratio (dB) |
+3 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
Depends on propagation mode |
Typical SSTV Amateur Station
The typical SSTV amateur station exchanges pictures with other stations.
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.15-14.35 |
|
Channel Spacing |
Random |
|
Information Rate |
.22 to 7.5 frames/sec |
|
Emission Type(s) |
2K50J3E |
|
Transmitter Power (dBW) |
30 |
|
Transmission Line Loss (dB) |
Transmit: .6 Receive: .6 |
|
Antenna Polarization |
Horizontal |
|
Antenna Maximum Gain (dBi) |
12 |
|
Maximum e.i.r.p. (dBW) |
41.4 |
|
Receiver IF Bandwidth |
2500 |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-145 |
|
Receiver Signal-to-Noise Ratio (dB) |
+30 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
Depends on propagation mode |
Typical 20 M Beacon Amateur Station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.1 |
|
Channel Spacing |
N/A |
|
Information Rate |
10 bit/s |
|
Emission Type(s) |
50HA1A |
|
Transmitter Power (dBW) |
20 |
|
Transmission Line Loss (dB) |
Transmit:.5 |
|
Antenna Polarization |
Vertical |
|
Antenna Maximum Gain (dBi) |
0 |
|
Maximum e.i.r.p. (dBW) |
19.5 |
|
Receiver IF Bandwidth |
100 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-159 |
|
Receiver Signal-to-Noise Ratio (dB) |
+1 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
depends on propagation mode |
Typical 20 M Hand-Held Amateur Station
The typical SSB hand-held amateur station can communicate with other SSB voice amateur stations.
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.15-14.35 |
|
Channel Spacing |
Random |
|
Information Rate |
speech |
|
Emission Type(s) |
2K50J3E |
|
Transmitter Power (dBW) |
3 |
|
Transmission Line Loss (dB) |
Transmit: .0 Receive: 00 |
|
Antenna Polarization |
Vertical |
|
Antenna Maximum Gain (dBi) |
-10 |
|
Maximum e.i.r.p. (dBW) |
-7 |
|
Receiver IF Bandwidth |
2500 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-145 |
|
Receiver Signal-to-Noise Ratio (dB) |
+6 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
Availability Target % |
|
|
Maximum Path Length (km) |
|
Mizuho sell these little radios.
Typical 20 M AM station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
14.15-14.3 |
|
Channel Spacing |
Random |
|
Information Rate |
Speech |
|
Emission Type(s) |
6K0A3E |
|
Transmitter Power (dBW) |
31.7 |
|
Transmission Line Loss (dB) |
Transmit: .5 Receive: 0.5 |
|
Antenna Polarization |
Horizontal |
|
Antenna Maximum Gain (dBi) |
12 |
|
Maximum e.i.r.p. (dBW) |
43.2 |
|
Receiver IF Bandwidth |
6 kHz |
|
Receiver Noise Figure (dB) |
7 |
|
Receiver System Noise (dBW) |
-142 |
|
Receiver Signal-to-Noise Ratio (dB) |
10 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
Depends on propagation mode |