High End 15 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) |
21.2-21.45 |
|
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; Vertical |
|
Antenna Maximum Gain (dBi) |
17 |
|
Maximum e.i.r.p. (dBW) |
48.1 |
|
Receiver IF Bandwidth |
2500 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-153 |
|
Receiver Signal-to-Noise Ratio (dB) |
+6 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
Availability Target % |
|
|
Maximum Path Length (km) |
|
TH7 Stack p. 11-25 of the ARRL Antenna Book, 18th edition.
Typical 15 SSB contest station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
21.2-21.45 |
|
Channel Spacing |
Random |
|
Information Rate |
speech |
|
Emission Type(s) |
2K50J3E |
|
Transmitter Power (dBW) |
31.7 |
|
Transmission Line Loss (dB) |
Transmit: .7 Receive: 0.7 |
|
Antenna Polarization |
Horizontal; Vertical |
|
Antenna Maximum Gain (dBi) |
15 |
|
Maximum e.i.r.p. (dBW) |
46.0 |
|
Receiver IF Bandwidth |
2500 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-153 |
|
Receiver Signal-to-Noise Ratio (dB) |
+6 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
Availability Target % |
|
|
Maximum Path Length (km) |
|
Shortened two element yagis are quite popular.
High End 15 CW contest station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
21.0-21.2 |
|
Channel Spacing |
Random |
|
Information Rate |
10 bit/sec |
|
Emission Type(s) |
100HA1A |
|
Transmitter Power (dBW) |
31.7 |
|
Transmission Line Loss (dB) |
Transmit: .6 Receive: 0.6 |
|
Antenna Polarization |
Horizontal; Vertical |
|
Antenna Maximum Gain (dBi) |
17 |
|
Maximum e.i.r.p. (dBW) |
48.1 |
|
Receiver IF Bandwidth |
CW:100 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-167 |
|
Receiver Signal-to-Noise Ratio (dB) |
+1 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
|
Typical 15 M SSB Amateur Station
The typical SSB amateur station communicates with other SSB using F layer propagation.
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
7.0-7.3 Receive, 7.075-7.1 and 7.15-7.3 Transmit |
|
Channel Spacing |
Random |
|
Information Rate |
Speech |
|
Emission Type(s) |
2K50J3E |
|
Transmitter Power (dBW) |
31.7 |
|
Transmission Line Loss (dB) |
Transmit: ..7 Receive: 0.7 |
|
Antenna Polarization |
Horizontal; Vertical |
|
Antenna Maximum Gain (dBi) |
15 |
|
Maximum e.i.r.p. (dBW) |
46 |
|
Receiver IF Bandwidth |
SSB:2500 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-153 |
|
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 |
Typical 15 M CW Amateur Station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
21.0-21.2 |
|
Channel Spacing |
Random |
|
Information Rate |
10 bit/s |
|
Emission Type(s) |
100HA1A |
|
Transmitter Power (dBW) |
20 |
|
Transmission Line Loss (dB) |
Transmit: .7 Receive: 0.7 |
|
Antenna Polarization |
Horizontal; Vertical |
|
Antenna Maximum Gain (dBi) |
8 |
|
Maximum e.i.r.p. (dBW) |
27.3 |
|
Receiver IF Bandwidth |
CW:100Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-167 |
|
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 |
Dipole at 30 ft
High End 15 M Digital Amateur Station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
21.0-21.2 |
|
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: .7 Receive: .7 |
|
Antenna Polarization |
Horizontal; Vertical |
|
Antenna Maximum Gain (dBi) |
15 |
|
Maximum e.i.r.p. (dBW) |
46 |
|
Receiver IF Bandwidth |
500 |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-160 |
|
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 15 M Digital Amateur Station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
21.0-21.2 |
|
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: .7 Receive: .7 |
|
Antenna Polarization |
Horizontal; Vertical |
|
Antenna Maximum Gain (dBi) |
8 |
|
Maximum e.i.r.p. (dBW) |
24.3 |
|
Receiver IF Bandwidth |
500 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-160 |
|
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 15 M SSTV Amateur Station
The typical SSTV amateur station exchanges pictures with other stations.
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
21.2-21.45 |
|
Channel Spacing |
Random |
|
Information Rate |
.22 to 7.5 frames/sec |
|
Emission Type(s) |
2K50J3E |
|
Transmitter Power (dBW) |
30 |
|
Transmission Line Loss (dB) |
Transmit: .7 Receive: .7 |
|
Antenna Polarization |
Horizontal; Vertical |
|
Antenna Maximum Gain (dBi) |
12 |
|
Maximum e.i.r.p. (dBW) |
41.3 |
|
Receiver IF Bandwidth |
2500 |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-153 |
|
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 15 M Beacon Amateur Station
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
21.15 |
|
Channel Spacing |
N/A |
|
Information Rate |
10 bit/s |
|
Emission Type(s) |
50HA1A |
|
Transmitter Power (dBW) |
20 |
|
Transmission Line Loss (dB) |
Transmit:.7 |
|
Antenna Polarization |
Vertical |
|
Antenna Maximum Gain (dBi) |
0 |
|
Maximum e.i.r.p. (dBW) |
19.3 |
|
Receiver IF Bandwidth |
100 Hz |
|
Receiver Noise Figure (dB) |
13 |
|
Receiver System Noise (dBW) |
-167 |
|
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 15 M Hand-Held Amateur Station
The typical SSB hand-held amateur station can communicate with some other SSB voice amateur stations.
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
21.2-21.45 |
|
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) |
-5 |
|
Maximum e.i.r.p. (dBW) |
-2 |
|
Receiver IF Bandwidth |
2500 Hz |
|
Receiver Noise Figure (dB) |
7 |
|
Receiver System Noise (dBW) |
-155 |
|
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 15 M Satellite Uplink
|
Characteristics
|
Values
|
|
Frequency Band (MHz) |
21.0-21.45 |
|
Channel Spacing |
Random |
|
Information Rate |
10 bit/s |
|
Emission Type(s) |
100HA1A; 2K50J3E |
|
Transmitter Power (dBW) |
14 |
|
Transmission Line Loss (dB) |
Transmit:.0.7 |
|
Antenna Polarization |
linear, circular |
|
Antenna Maximum Gain (dBi) |
8 |
|
Maximum e.i.r.p. (dBW) |
21.3 |
|
Receiver IF Bandwidth |
100 Hz |
|
Receiver Noise Figure (dB) |
7 |
|
Receiver System Noise (dBW) |
-152,-138 |
|
Receiver Signal-to-Noise Ratio (dB) |
+1;+6 |
|
Maximum Long-Term Interference Power [dB(W/Hz)] |
To be determined |
|
|
|
|
Maximum Path Length (km) |
depends on propagation mode |