| Rank
|
Page title
|
Views
|
Daily average
|
Assessment
|
Importance
|
| 1
|
NATO phonetic alphabet
|
356,940
|
11,898
|
C
|
Low
|
| 2
|
Morse code
|
130,602
|
4,353
|
B
|
High
|
| 3
|
Amateur radio
|
33,929
|
1,130
|
B
|
Top
|
| 4
|
Guglielmo Marconi
|
29,462
|
982
|
B
|
Mid
|
| 5
|
Duga radar
|
23,360
|
778
|
B
|
Low
|
| 6
|
Radio frequency
|
17,585
|
586
|
C
|
High
|
| 7
|
Amplitude modulation
|
16,718
|
557
|
C
|
High
|
| 8
|
Software-defined radio
|
15,690
|
523
|
C
|
Mid
|
| 9
|
Frequency modulation
|
14,926
|
497
|
B
|
High
|
| 10
|
Dipole antenna
|
14,004
|
466
|
B
|
Mid
|
| 11
|
Ionosphere
|
13,393
|
446
|
B
|
Mid
|
| 12
|
Slow-scan television
|
12,354
|
411
|
B
|
High
|
| 13
|
North Sea flood of 1953
|
11,067
|
368
|
C
|
Low
|
| 14
|
Yagi–Uda antenna
|
10,633
|
354
|
C
|
Mid
|
| 15
|
Q code
|
10,241
|
341
|
C
|
Mid
|
| 16
|
Rockwell Collins
|
9,276
|
309
|
C
|
Low
|
| 17
|
Single-sideband modulation
|
8,679
|
289
|
B
|
High
|
| 18
|
Frequency-shift keying
|
8,378
|
279
|
Start
|
Mid
|
| 19
|
Kenwood Corporation
|
8,151
|
271
|
Start
|
Mid
|
| 20
|
Zenith Electronics
|
7,092
|
236
|
C
|
Low
|
| 21
|
Baofeng UV-5R
|
6,895
|
229
|
Start
|
Low
|
| 22
|
Radio masts and towers
|
6,364
|
212
|
C
|
Low
|
| 23
|
Military Auxiliary Radio System
|
6,166
|
205
|
B
|
Low
|
| 24
|
Amateur radio frequency allocations
|
6,060
|
202
|
Start
|
High
|
| 25
|
CQD
|
5,682
|
189
|
Start
|
Low
|
| 26
|
Baudot code
|
5,597
|
186
|
Start
|
Low
|
| 27
|
Carrier wave
|
5,035
|
167
|
Start
|
Low
|
| 28
|
Radio propagation
|
4,825
|
160
|
B
|
Top
|
| 29
|
Automatic Packet Reporting System
|
4,784
|
159
|
C
|
Mid
|
| 30
|
Call signs in the United States
|
4,533
|
151
|
Start
|
Low
|
| 31
|
Prosigns for Morse code
|
4,015
|
133
|
C
|
Mid
|
| 32
|
Skywave
|
3,593
|
119
|
B
|
High
|
| 33
|
FT8
|
3,440
|
114
|
Stub
|
Unknown
|
| 34
|
Earth–Moon–Earth communication
|
3,398
|
113
|
Start
|
Mid
|
| 35
|
Maidenhead Locator System
|
3,249
|
108
|
C
|
Mid
|
| 36
|
AMSAT-OSCAR 7
|
3,211
|
107
|
Start
|
Low
|
| 37
|
10-meter band
|
3,077
|
102
|
B
|
High
|
| 38
|
DigiKey
|
3,028
|
100
|
Start
|
Low
|
| 39
|
QSL card
|
2,987
|
99
|
Start
|
High
|
| 40
|
Amateur radio operator
|
2,898
|
96
|
Start
|
Top
|
| 41
|
ITU Region
|
2,878
|
95
|
Stub
|
Low
|
| 42
|
2-meter band
|
2,872
|
95
|
Start
|
High
|
| 43
|
70-centimeter band
|
2,751
|
91
|
Start
|
High
|
| 44
|
CQ (call)
|
2,735
|
91
|
Stub
|
Low
|
| 45
|
Radioteletype
|
2,709
|
90
|
B
|
High
|
| 46
|
Heathkit
|
2,682
|
89
|
B
|
Mid
|
| 47
|
Continuous wave
|
2,671
|
89
|
Start
|
High
|
| 48
|
Amateur radio call signs
|
2,607
|
86
|
Start
|
High
|
| 49
|
Hiram Percy Maxim
|
2,572
|
85
|
Start
|
Mid
|
| 50
|
Surface wave
|
2,531
|
84
|
B
|
Mid
|
| 51
|
Amateur radio licensing in the United States
|
2,504
|
83
|
B
|
Low
|
| 52
|
Ham radio
|
2,334
|
77
|
NA
|
NA
|
| 53
|
J-pole antenna
|
2,228
|
74
|
C
|
Mid
|
| 54
|
WARC bands
|
2,185
|
72
|
Start
|
Mid
|
| 55
|
WSJT (amateur radio software)
|
2,171
|
72
|
Start
|
Low
|
| 56
|
DXing
|
2,148
|
71
|
Start
|
High
|
| 57
|
Etymology of ham radio
|
2,096
|
69
|
Start
|
Low
|
| 58
|
Telegraph key
|
2,049
|
68
|
Start
|
Mid
|
| 59
|
Amateur television
|
2,046
|
68
|
Start
|
High
|
| 60
|
6-meter band
|
2,012
|
67
|
Start
|
High
|
| 61
|
Amateur radio satellite
|
1,969
|
65
|
C
|
Low
|
| 62
|
D-STAR
|
1,956
|
65
|
C
|
Low
|
| 63
|
Packet radio
|
1,951
|
65
|
Start
|
High
|
| 64
|
Communication during the September 11 attacks
|
1,951
|
65
|
B
|
Low
|
| 65
|
Near vertical incidence skywave
|
1,940
|
64
|
Start
|
Mid
|
| 66
|
Velocity factor
|
1,922
|
64
|
Start
|
High
|
| 67
|
Antenna tuner
|
1,912
|
63
|
C
|
Low
|
| 68
|
International reply coupon
|
1,908
|
63
|
Start
|
Low
|
| 69
|
Owen Garriott
|
1,886
|
62
|
B
|
Low
|
| 70
|
40-meter band
|
1,842
|
61
|
Start
|
High
|
| 71
|
QRP operation
|
1,802
|
60
|
Start
|
Mid
|
| 72
|
1.25-meter band
|
1,736
|
57
|
Start
|
Mid
|
| 73
|
R-S-T system
|
1,607
|
53
|
Start
|
Mid
|
| 74
|
AX.25
|
1,573
|
52
|
Start
|
Low
|
| 75
|
ITU prefix
|
1,549
|
51
|
Start
|
Mid
|
| 76
|
Ground wave
|
1,532
|
51
|
Start
|
High
|
| 77
|
DX-pedition
|
1,463
|
48
|
Start
|
High
|
| 78
|
Diplexer
|
1,413
|
47
|
Start
|
Low
|
| 79
|
20-meter band
|
1,413
|
47
|
Stub
|
High
|
| 80
|
PSK31
|
1,390
|
46
|
B
|
Mid
|
| 81
|
Icom Incorporated
|
1,388
|
46
|
Stub
|
Mid
|
| 82
|
Winlink
|
1,357
|
45
|
Start
|
Mid
|
| 83
|
60-meter band
|
1,324
|
44
|
Start
|
Mid
|
| 84
|
American Radio Relay League
|
1,319
|
43
|
C
|
High
|
| 85
|
Fldigi
|
1,300
|
43
|
C
|
Low
|
| 86
|
33-centimeter band
|
1,290
|
43
|
Start
|
Mid
|
| 87
|
List of amateur radio modes
|
1,267
|
42
|
List
|
Mid
|
| 88
|
80-meter band
|
1,262
|
42
|
Start
|
High
|
| 89
|
List of amateur radio transceivers
|
1,206
|
40
|
List
|
Low
|
| 90
|
Yaesu (brand)
|
1,200
|
40
|
Start
|
Mid
|
| 91
|
Automatic link establishment
|
1,190
|
39
|
C
|
Mid
|
| 92
|
Amateur radio in India
|
1,164
|
38
|
B
|
Mid
|
| 93
|
AMPRNet
|
1,142
|
38
|
B
|
Mid
|
| 94
|
List of amateur radio software
|
1,124
|
37
|
List
|
Mid
|
| 95
|
G5RV antenna
|
1,122
|
37
|
Stub
|
Low
|
| 96
|
Beverage antenna
|
1,117
|
37
|
Start
|
Low
|
| 97
|
Long delayed echo
|
1,109
|
36
|
Start
|
Low
|
| 98
|
Grote Reber
|
1,100
|
36
|
C
|
Low
|
| 99
|
Amateur radio repeater
|
1,089
|
36
|
Start
|
High
|
| 100
|
Multiple frequency-shift keying
|
1,084
|
36
|
Start
|
Mid
|
| 101
|
Hellschreiber
|
1,077
|
35
|
Start
|
Mid
|
| 102
|
Surrey Satellite Technology
|
1,055
|
35
|
B
|
Low
|
| 103
|
Parks On The Air
|
1,030
|
34
|
Stub
|
High
|
| 104
|
Sporadic E propagation
|
1,017
|
33
|
Start
|
Mid
|
| 105
|
Call signs in North America
|
989
|
32
|
Start
|
Low
|
| 106
|
S meter
|
982
|
32
|
Start
|
Mid
|
| 107
|
Amateur radio direction finding
|
949
|
31
|
C
|
High
|
| 108
|
EchoLink
|
947
|
31
|
Start
|
Mid
|
| 109
|
FalconSAT
|
933
|
31
|
Start
|
Low
|
| 110
|
ACP 131
|
923
|
30
|
C
|
Low
|
| 111
|
Call signs in the United Kingdom
|
917
|
30
|
Start
|
Low
|
| 112
|
Contact (amateur radio)
|
912
|
30
|
Stub
|
Mid
|
| 113
|
4-metre band
|
907
|
30
|
Start
|
Mid
|
| 114
|
International Amateur Radio Union
|
906
|
30
|
Start
|
Top
|
| 115
|
Beat frequency oscillator
|
890
|
29
|
Start
|
Mid
|
| 116
|
Lost Boy Larry
|
888
|
29
|
C
|
Low
|
| 117
|
8-meter band
|
863
|
28
|
Start
|
Mid
|
| 118
|
Z code
|
858
|
28
|
Start
|
Low
|
| 119
|
Wireless Set No. 19
|
856
|
28
|
C
|
Low
|
| 120
|
Popular Electronics
|
846
|
28
|
C
|
Low
|
| 121
|
Linear amplifier
|
846
|
28
|
Start
|
Low
|
| 122
|
AMSAT
|
829
|
27
|
Start
|
Mid
|
| 123
|
Peak envelope power
|
823
|
27
|
Start
|
Low
|
| 124
|
160-meter band
|
817
|
27
|
Start
|
High
|
| 125
|
Dummy load
|
812
|
27
|
Start
|
Low
|
| 126
|
Lafayette Radio Electronics
|
803
|
26
|
Start
|
Low
|
| 127
|
Contesting
|
791
|
26
|
B
|
High
|
| 128
|
Field Day (amateur radio)
|
788
|
26
|
Start
|
High
|
| 129
|
QRZ.com
|
769
|
25
|
Start
|
Low
|
| 130
|
23-centimeter band
|
767
|
25
|
Stub
|
Mid
|
| 131
|
M17 (amateur radio)
|
766
|
25
|
Start
|
Low
|
| 132
|
KISS (amateur radio protocol)
|
763
|
25
|
Start
|
Mid
|
| 133
|
Hallicrafters
|
760
|
25
|
Start
|
Low
|
| 134
|
Call signs in Canada
|
754
|
25
|
C
|
Low
|
| 135
|
Maximum usable frequency
|
751
|
25
|
Start
|
Mid
|
| 136
|
Driven and parasitic elements
|
747
|
24
|
Start
|
High
|
| 137
|
500 kHz
|
733
|
24
|
Start
|
Low
|
| 138
|
History of amateur radio
|
731
|
24
|
C
|
Top
|
| 139
|
2200-meter band
|
716
|
23
|
Start
|
Mid
|
| 140
|
Radiogram (message)
|
706
|
23
|
C
|
Low
|
| 141
|
Quad antenna
|
702
|
23
|
Start
|
Low
|
| 142
|
15-meter band
|
698
|
23
|
Stub
|
High
|
| 143
|
Terminal node controller
|
687
|
22
|
Start
|
Mid
|
| 144
|
Amateur Radio Emergency Service
|
672
|
22
|
Start
|
Mid
|
| 145
|
RS Americas, Inc
|
669
|
22
|
Start
|
Low
|
| 146
|
Amateur radio station
|
661
|
22
|
B
|
Top
|
| 147
|
High-speed multimedia radio
|
655
|
21
|
C
|
Low
|
| 148
|
List of amateur radio frequency bands in India
|
643
|
21
|
FL
|
Mid
|
| 149
|
Radio shack
|
636
|
21
|
Stub
|
Low
|
| 150
|
PSK Reporter
|
634
|
21
|
Start
|
Mid
|
| 151
|
R-390A
|
630
|
21
|
Start
|
Low
|
| 152
|
Amateur radio operating award
|
627
|
20
|
Stub
|
High
|
| 153
|
Radiosport
|
620
|
20
|
Start
|
Mid
|
| 154
|
Amateur radio propagation beacon
|
620
|
20
|
Start
|
Mid
|
| 155
|
PACTOR
|
613
|
20
|
Start
|
Mid
|
| 156
|
Inverted vee antenna
|
611
|
20
|
Stub
|
Mid
|
| 157
|
Multi-Band Excitation
|
600
|
20
|
Start
|
Mid
|
| 158
|
Yaesu VX series
|
588
|
19
|
C
|
Low
|
| 159
|
CQ Amateur Radio
|
585
|
19
|
Start
|
Low
|
| 160
|
ICOM IC-7300
|
575
|
19
|
Stub
|
Unknown
|
| 161
|
630-meter band
|
572
|
19
|
Start
|
Mid
|
| 162
|
QST
|
561
|
18
|
C
|
Mid
|
| 163
|
Transmitter hunting
|
559
|
18
|
B
|
Mid
|
| 164
|
Radio Act of 1912
|
556
|
18
|
Start
|
Low
|
| 165
|
Japan Radio Company
|
554
|
18
|
Stub
|
Low
|
| 166
|
Meteor burst communications
|
552
|
18
|
Start
|
Mid
|
| 167
|
BC-348
|
552
|
18
|
Start
|
Low
|
| 168
|
Radio Amateur Civil Emergency Service
|
542
|
18
|
Start
|
Mid
|
| 169
|
Voice-operated switch
|
541
|
18
|
Start
|
Low
|
| 170
|
Amateur Radio on the International Space Station
|
540
|
18
|
C
|
Low
|
| 171
|
Hidetsugu Yagi
|
534
|
17
|
C
|
Low
|
| 172
|
Skip zone
|
523
|
17
|
Stub
|
Low
|
| 173
|
Vintage amateur radio
|
520
|
17
|
GA
|
High
|
| 174
|
SuitSat
|
500
|
16
|
Start
|
Low
|
| 175
|
Russian Morse code
|
499
|
16
|
Start
|
Low
|
| 176
|
Astatic Corporation
|
497
|
16
|
Start
|
Low
|
| 177
|
Yaesu FT-101
|
496
|
16
|
Stub
|
Low
|
| 178
|
13-centimeter band
|
491
|
16
|
Stub
|
High
|
| 179
|
Grid dip oscillator
|
488
|
16
|
Start
|
Low
|
| 180
|
Call signs in Australia
|
481
|
16
|
List
|
Low
|
| 181
|
3Y0J Bouvet Island DXpedition
|
474
|
15
|
C
|
Mid
|
| 182
|
Amateur radio emergency communications
|
467
|
15
|
Start
|
High
|
| 183
|
EF Johnson Technologies
|
466
|
15
|
Stub
|
Low
|
| 184
|
Radio Emergency Associated Communication Teams
|
463
|
15
|
Start
|
Low
|
| 185
|
Amateur radio international operation
|
447
|
14
|
C
|
Mid
|
| 186
|
Skywarn
|
411
|
13
|
Start
|
Low
|
| 187
|
LowFER
|
389
|
12
|
Start
|
Low
|
| 188
|
SCR-284
|
382
|
12
|
Stub
|
Low
|
| 189
|
MFJ Enterprises
|
381
|
12
|
Stub
|
Low
|
| 190
|
Amateur radio net
|
381
|
12
|
B
|
Mid
|
| 191
|
Olivia MFSK
|
373
|
12
|
Start
|
Low
|
| 192
|
Call signs in Russia
|
372
|
12
|
Start
|
Low
|
| 193
|
Transverter
|
371
|
12
|
Start
|
Mid
|
| 194
|
R. L. Drake Company
|
368
|
12
|
Start
|
Low
|
| 195
|
Ham radio (disambiguation)
|
363
|
12
|
Disambig
|
NA
|
| 196
|
W1AW
|
359
|
11
|
C
|
High
|
| 197
|
OSCAR
|
352
|
11
|
NA
|
Mid
|
| 198
|
Yaesu FT-891
|
340
|
11
|
Start
|
Low
|
| 199
|
Shintaro Uda
|
334
|
11
|
Start
|
Low
|
| 200
|
KPH (radio station)
|
330
|
11
|
Start
|
Mid
|
| 201
|
AN/ART-13
|
322
|
10
|
Start
|
Low
|
| 202
|
Sputnik 99
|
320
|
10
|
B
|
Low
|
| 203
|
Hallicrafters SX-28
|
318
|
10
|
B
|
Mid
|
| 204
|
ICOM IC-705
|
318
|
10
|
Start
|
Low
|
| 205
|
Vibroplex
|
315
|
10
|
Stub
|
Low
|
| 206
|
Call signs in Asia
|
314
|
10
|
Start
|
Low
|
| 207
|
Internet Radio Linking Project
|
307
|
10
|
Start
|
Mid
|
| 208
|
National Traffic System
|
297
|
9
|
Start
|
Low
|
| 209
|
Communications receiver
|
296
|
9
|
Start
|
High
|
| 210
|
Hammarlund
|
293
|
9
|
Start
|
Low
|
| 211
|
BaoFeng UV-5R
|
293
|
9
|
NA
|
Low
|
| 212
|
SITOR
|
292
|
9
|
Stub
|
Low
|
| 213
|
Alinco
|
291
|
9
|
Stub
|
Low
|
| 214
|
Call signs in Japan
|
285
|
9
|
Start
|
Low
|
| 215
|
Braid-breaker
|
280
|
9
|
Start
|
Low
|
| 216
|
Autopatch
|
277
|
9
|
Stub
|
Mid
|
| 217
|
Sudden ionospheric disturbance
|
275
|
9
|
Start
|
Low
|
| 218
|
List of amateur radio magazines
|
275
|
9
|
List
|
Low
|
| 219
|
Boat anchor (metaphor)
|
264
|
8
|
Start
|
Low
|
| 220
|
5-meter band
|
264
|
8
|
Start
|
Low
|
| 221
|
Radio Society of Great Britain
|
262
|
8
|
Start
|
High
|
| 222
|
Hamfest
|
256
|
8
|
Start
|
Mid
|
| 223
|
Ladder line
|
254
|
8
|
NA
|
Low
|
| 224
|
Phil Karn
|
251
|
8
|
Stub
|
Low
|
| 225
|
Amateur radio homebrew
|
251
|
8
|
Start
|
High
|
| 226
|
Citizens band radio in India
|
250
|
8
|
Stub
|
Low
|
| 227
|
International Beacon Project
|
249
|
8
|
Stub
|
Low
|
| 228
|
Modulated continuous wave
|
243
|
8
|
Stub
|
Mid
|
| 229
|
List of amateur radio organizations
|
241
|
8
|
List
|
Low
|
| 230
|
QN Signals
|
241
|
8
|
Start
|
Unknown
|
| 231
|
HAMSAT
|
239
|
7
|
Stub
|
Low
|
| 232
|
Maritime mobile amateur radio
|
239
|
7
|
Start
|
Mid
|
| 233
|
Radio News
|
239
|
7
|
Start
|
Low
|
| 234
|
National Radio Company
|
230
|
7
|
Stub
|
Low
|
| 235
|
Absorption wavemeter
|
229
|
7
|
Stub
|
Low
|
| 236
|
Modern Electrics
|
227
|
7
|
Stub
|
Low
|
| 237
|
High-speed telegraphy
|
227
|
7
|
B
|
Mid
|
| 238
|
Eico
|
224
|
7
|
Stub
|
Low
|
| 239
|
Call signs in New Zealand
|
217
|
7
|
Start
|
Low
|
| 240
|
U.S. Military Telegraph Corps
|
214
|
7
|
B
|
Low
|
| 241
|
Yaesu FT-1000MP
|
213
|
7
|
Start
|
Low
|
| 242
|
QRA locator
|
213
|
7
|
Start
|
Low
|
| 243
|
CW Skimmer
|
211
|
7
|
Stub
|
Low
|
| 244
|
Pi network
|
210
|
7
|
NA
|
NA
|
| 245
|
Swan Electronics
|
206
|
6
|
Start
|
Low
|
| 246
|
SUNSAT
|
205
|
6
|
Stub
|
Low
|
| 247
|
Charles E. Apgar
|
202
|
6
|
GA
|
Mid
|
| 248
|
Logbook of The World
|
202
|
6
|
Start
|
Low
|
| 249
|
AMTOR
|
201
|
6
|
Stub
|
Low
|
| 250
|
Harold Beverage
|
201
|
6
|
Start
|
Low
|
| 251
|
KA9Q
|
199
|
6
|
Stub
|
Low
|
| 252
|
Improved Layer 2 Protocol
|
199
|
6
|
Stub
|
Low
|
| 253
|
Call signs in India
|
198
|
6
|
Start
|
Low
|
| 254
|
National HRO
|
197
|
6
|
Start
|
Low
|
| 255
|
Wireless Set Number 11
|
194
|
6
|
Start
|
Low
|
| 256
|
Crossband operation
|
194
|
6
|
Stub
|
Low
|
| 257
|
DX cluster
|
193
|
6
|
Start
|
Low
|
| 258
|
Amateur radio license
|
190
|
6
|
NA
|
NA
|
| 259
|
Amateur radio licensing in China
|
188
|
6
|
Start
|
Low
|
| 260
|
Ham Radio Deluxe
|
186
|
6
|
Stub
|
Low
|
| 261
|
Call signs in Korea
|
184
|
6
|
Start
|
Low
|
| 262
|
5-centimeter band
|
183
|
6
|
Stub
|
Mid
|
| 263
|
SPLAT!
|
182
|
6
|
Stub
|
Mid
|
| 264
|
Amateur radio call signs in Africa
|
181
|
6
|
Start
|
Low
|
| 265
|
Saudi-OSCAR 50
|
180
|
6
|
Start
|
Low
|
| 266
|
UoSAT-1
|
179
|
5
|
Stub
|
Low
|
| 267
|
73 (magazine)
|
178
|
5
|
Start
|
Low
|
| 268
|
Passive radiator
|
176
|
5
|
NA
|
NA
|
| 269
|
Dayton Hamvention
|
170
|
5
|
Stub
|
Low
|
| 270
|
ICOM IC-7100
|
170
|
5
|
Stub
|
Unknown
|
| 271
|
Fox-1B
|
167
|
5
|
Start
|
Low
|
| 272
|
Junk box
|
165
|
5
|
Start
|
Low
|
| 273
|
Sloper antenna
|
164
|
5
|
Stub
|
Low
|
| 274
|
Computer aided transceiver
|
164
|
5
|
Start
|
Low
|
| 275
|
APRS Calling
|
158
|
5
|
Start
|
Low
|
| 276
|
Salvation Army Team Emergency Radio Network
|
154
|
5
|
Stub
|
Low
|
| 277
|
HamSphere
|
153
|
5
|
Start
|
Low
|
| 278
|
Call signs in the Middle East
|
150
|
5
|
C
|
Low
|
| 279
|
Call signs in Antarctica
|
150
|
5
|
Start
|
Low
|
| 280
|
Paraset
|
148
|
4
|
Start
|
Low
|
| 281
|
High Frequency Internet Protocol
|
147
|
4
|
Stub
|
Low
|
| 282
|
RFinder
|
147
|
4
|
Start
|
Low
|
| 283
|
Wide-coverage Internet Repeater Enhancement System
|
145
|
4
|
Stub
|
Low
|
| 284
|
OSCAR 40
|
144
|
4
|
Start
|
Low
|
| 285
|
Deutscher Amateur-Radio-Club
|
144
|
4
|
Stub
|
High
|
| 286
|
Hammarlund Super Pro
|
142
|
4
|
Start
|
Low
|
| 287
|
Russian Amateur Radio Union
|
142
|
4
|
Stub
|
High
|
| 288
|
UoSAT-2
|
137
|
4
|
Start
|
Low
|
| 289
|
Varicode
|
136
|
4
|
Start
|
Low
|
| 290
|
Single operator two radios
|
129
|
4
|
Start
|
Low
|
| 291
|
Radio Amateurs Emergency Network
|
128
|
4
|
Stub
|
Low
|
| 292
|
Practical Wireless
|
127
|
4
|
Stub
|
Low
|
| 293
|
Electronics Australia
|
127
|
4
|
Start
|
Low
|
| 294
|
Amateur radio licence categories in India
|
125
|
4
|
Stub
|
Mid
|
| 295
|
Radio Amateurs of Canada
|
124
|
4
|
Stub
|
Mid
|
| 296
|
UoSAT-12
|
122
|
4
|
Stub
|
Low
|
| 297
|
Young Ladies Radio League
|
120
|
4
|
Start
|
Low
|
| 298
|
Japan Amateur Radio League
|
116
|
3
|
Stub
|
High
|
| 299
|
75A-4 and KWS-1
|
116
|
3
|
Start
|
Low
|
| 300
|
Radio Amateur Society of Thailand
|
115
|
3
|
Start
|
High
|
| 301
|
AMSAT-OSCAR 51
|
114
|
3
|
Start
|
Low
|
| 302
|
Q codes
|
111
|
3
|
NA
|
NA
|
| 303
|
Trinidad and Tobago Amateur Radio Society
|
108
|
3
|
Start
|
Mid
|
| 304
|
Jamboree on the Air
|
107
|
3
|
Stub
|
Mid
|
| 305
|
Beardslee Telegraph
|
104
|
3
|
Start
|
Low
|
| 306
|
List of DX-peditions
|
104
|
3
|
List
|
Mid
|
| 307
|
Signal/One
|
103
|
3
|
Stub
|
Low
|
| 308
|
$50SAT
|
103
|
3
|
Start
|
Low
|
| 309
|
Call signs in Europe
|
102
|
3
|
Start
|
Low
|
| 310
|
DX Century Club
|
99
|
3
|
NA
|
Low
|
| 311
|
Title 47 CFR Part 97
|
98
|
3
|
Start
|
Mid
|
| 312
|
World Radiosport Team Championship
|
96
|
3
|
Start
|
Mid
|
| 313
|
Call signs in Mexico
|
94
|
3
|
C
|
Low
|
| 314
|
Soviet–Canadian 1988 Polar Bridge Expedition
|
94
|
3
|
Start
|
Low
|
| 315
|
Rohn Industries
|
93
|
3
|
Stub
|
Low
|
| 316
|
South African Radio League
|
92
|
3
|
Start
|
Mid
|
| 317
|
Wireless Ship Act of 1910
|
92
|
3
|
Stub
|
Low
|
| 318
|
QEX
|
92
|
3
|
Stub
|
Low
|
| 319
|
Wireless Institute of Australia
|
91
|
3
|
Start
|
Mid
|
| 320
|
International Amateur Radio Club
|
91
|
3
|
Stub
|
Low
|
| 321
|
Fox-1D
|
85
|
2
|
Start
|
Low
|
| 322
|
Amateur radio licensing in Australia
|
84
|
2
|
Start
|
Mid
|
| 323
|
BS7H Scarborough Reef DXpedition
|
84
|
2
|
Start
|
Mid
|
| 324
|
Kuwait Amateur Radio Society
|
81
|
2
|
Stub
|
Mid
|
| 325
|
Submillimeter amateur radio
|
81
|
2
|
C
|
Low
|
| 326
|
War Emergency Radio Service
|
80
|
2
|
Stub
|
Low
|
| 327
|
Philippine Amateur Radio Association
|
80
|
2
|
Stub
|
Mid
|
| 328
|
FBB (software)
|
80
|
2
|
Stub
|
Low
|
| 329
|
BLUEsat UNSW
|
79
|
2
|
Stub
|
Low
|
| 330
|
Airplane scatter
|
79
|
2
|
Start
|
Mid
|
| 331
|
Fox-1A
|
78
|
2
|
Start
|
Low
|
| 332
|
Tucson Amateur Packet Radio
|
77
|
2
|
Stub
|
Low
|
| 333
|
Electronics Illustrated
|
77
|
2
|
Start
|
Low
|
| 334
|
World Radio Laboratories
|
77
|
2
|
Stub
|
Low
|
| 335
|
Hamfest India
|
77
|
2
|
Stub
|
Low
|
| 336
|
Organisasi Amatir Radio Indonesia
|
77
|
2
|
Stub
|
Mid
|
| 337
|
Winmor
|
77
|
2
|
Start
|
Low
|
| 338
|
Marshall D. Moran
|
75
|
2
|
Start
|
Mid
|
| 339
|
Frequency plan
|
74
|
2
|
NA
|
Mid
|
| 340
|
Starshine 3
|
73
|
2
|
Start
|
Low
|
| 341
|
Summits on the Air
|
72
|
2
|
NA
|
Low
|
| 342
|
KP6PA Palmyra Atoll DXpedition
|
72
|
2
|
Stub
|
Low
|
| 343
|
RadCom
|
70
|
2
|
Stub
|
Low
|
| 344
|
K.W. Electronics
|
70
|
2
|
Start
|
Unknown
|
| 345
|
CLOVER2000
|
69
|
2
|
Stub
|
Low
|
| 346
|
QRB
|
68
|
2
|
Disambig
|
NA
|
| 347
|
Amateur Radio Emergency Communications
|
68
|
2
|
Start
|
Low
|
| 348
|
Popular Communications
|
68
|
2
|
Stub
|
Low
|
| 349
|
CQ ham radio
|
68
|
2
|
Stub
|
Low
|
| 350
|
SumbandilaSat
|
67
|
2
|
Start
|
Low
|
| 351
|
Qatar Amateur Radio Society
|
65
|
2
|
Stub
|
Mid
|
| 352
|
Portable operation (amateur radio)
|
64
|
2
|
Stub
|
Mid
|
| 353
|
New Zealand Association of Radio Transmitters
|
63
|
2
|
Start
|
Mid
|
| 354
|
Spartan Packet Radio Experiment
|
63
|
2
|
Stub
|
Low
|
| 355
|
Funkamateur
|
63
|
2
|
Stub
|
Low
|
| 356
|
Unión de Radioaficionados Españoles
|
61
|
2
|
Stub
|
High
|
| 357
|
Contest logging software
|
60
|
2
|
Start
|
Low
|
| 358
|
FO0XB Clipperton Island DXpedition
|
60
|
2
|
Stub
|
Low
|
| 359
|
Contesting controversies
|
59
|
1
|
Start
|
Low
|
| 360
|
Fox-1Cliff
|
59
|
1
|
Start
|
Low
|
| 361
|
Relay league
|
58
|
1
|
Stub
|
Low
|
| 362
|
Amateur radio bands
|
57
|
1
|
NA
|
High
|
| 363
|
Associazione Radioamatori Italiani
|
57
|
1
|
Stub
|
Mid
|
| 364
|
Israel Amateur Radio Club
|
57
|
1
|
Stub
|
Mid
|
| 365
|
Call signs in South America
|
57
|
1
|
Start
|
Low
|
| 366
|
Weber-OSCAR 18
|
57
|
1
|
Start
|
Low
|
| 367
|
Q15X25
|
55
|
1
|
Stub
|
Low
|
| 368
|
Shuttle Amateur Radio Experiment
|
55
|
1
|
Start
|
Mid
|
| 369
|
Chinese Radio Sports Association
|
55
|
1
|
Stub
|
High
|
| 370
|
K9YA Telegraph
|
54
|
1
|
Stub
|
Low
|
| 371
|
Remote base station
|
53
|
1
|
Stub
|
Low
|
| 372
|
Korean Amateur Radio League
|
53
|
1
|
Stub
|
Mid
|
| 373
|
Five Nine
|
52
|
1
|
Stub
|
Low
|
| 374
|
Fox Oring
|
51
|
1
|
Start
|
Low
|
| 375
|
Heys Collection
|
51
|
1
|
Stub
|
Low
|
| 376
|
Winradio
|
50
|
1
|
Stub
|
Low
|
| 377
|
Association Royale des Radio Amateurs du Maroc
|
50
|
1
|
Stub
|
Mid
|
| 378
|
Kenwood TS-2000
|
48
|
1
|
NA
|
Low
|
| 379
|
ICOM IC-905
|
48
|
1
|
Stub
|
Unknown
|
| 380
|
CUTE-1.7 + APD
|
47
|
1
|
Stub
|
Low
|
| 381
|
Amateur auxiliary
|
46
|
1
|
Start
|
Low
|
| 382
|
Swedish Voluntary Radio Organization
|
45
|
1
|
Stub
|
Low
|
| 383
|
Worked All Zones
|
43
|
1
|
NA
|
Low
|
| 384
|
Balloon Experiments with Amateur Radio
|
43
|
1
|
Start
|
Low
|
| 385
|
Call signs in Argentina
|
43
|
1
|
Start
|
Low
|
| 386
|
Call signs in Oceania
|
43
|
1
|
Start
|
Low
|
| 387
|
CANWARN
|
42
|
1
|
Stub
|
Low
|
| 388
|
Ella Cheever Thayer
|
41
|
1
|
Start
|
Low
|
| 389
|
Volunteer Examiner Coordinator
|
40
|
1
|
Stub
|
Low
|
| 390
|
British Amateur Television Club
|
40
|
1
|
Stub
|
Low
|
| 391
|
Swedish Society of Radio Amateurs
|
40
|
1
|
Stub
|
High
|
| 392
|
Slovenský Zväz Rádioamatérov
|
40
|
1
|
Stub
|
High
|
| 393
|
Belarusian Federation of Radioamateurs and Radiosportsmen
|
40
|
1
|
Stub
|
Mid
|
| 394
|
Radio Amateur Association of Greece
|
40
|
1
|
Start
|
Low
|
| 395
|
Guides on the Air
|
39
|
1
|
Stub
|
Low
|
| 396
|
Amateur Radio Society of India
|
39
|
1
|
Start
|
Mid
|
| 397
|
Old Man (magazine)
|
39
|
1
|
Stub
|
Low
|
| 398
|
Radio Club Argentino
|
39
|
1
|
Stub
|
High
|
| 399
|
Radio Club de Chile
|
39
|
1
|
Stub
|
Mid
|
| 400
|
National Contest Journal
|
38
|
1
|
Start
|
Low
|
| 401
|
Tampere Convention
|
38
|
1
|
Start
|
Low
|
| 402
|
Polski Związek Krótkofalowców
|
38
|
1
|
Stub
|
High
|
| 403
|
Amateurs Radio Algeriens
|
38
|
1
|
Stub
|
Mid
|
| 404
|
Special event station
|
38
|
1
|
Start
|
Low
|
| 405
|
Réseau des Émetteurs Français
|
37
|
1
|
Stub
|
High
|
| 406
|
Federacion Mexicana de Radio Experimentadores
|
37
|
1
|
Stub
|
High
|
| 407
|
PANSAT
|
37
|
1
|
Start
|
Low
|
| 408
|
KiwiSAT
|
36
|
1
|
NA
|
NA
|
| 409
|
Irish Radio Transmitters Society
|
36
|
1
|
Start
|
High
|
| 410
|
Liga de Amadores Brasileiros de Rádio Emissão
|
36
|
1
|
Stub
|
High
|
| 411
|
Federația Română de Radioamatorism
|
36
|
1
|
Start
|
High
|
| 412
|
Radio Club de Costa Rica
|
36
|
1
|
Stub
|
Mid
|
| 413
|
Malaysian Amateur Radio Transmitters' Society
|
35
|
1
|
Stub
|
High
|
| 414
|
Experimenterende Danske Radioamatører
|
35
|
1
|
Stub
|
Mid
|
| 415
|
Hong Kong Amateur Radio Transmitting Society
|
34
|
1
|
Stub
|
High
|
| 416
|
Ukrainian Amateur Radio League
|
34
|
1
|
Stub
|
High
|
| 417
|
National Institute of Amateur Radio
|
34
|
1
|
Stub
|
Low
|
| 418
|
EQSO
|
33
|
1
|
NA
|
NA
|
| 419
|
Radio Orienteering in a Compact Area
|
33
|
1
|
Stub
|
Low
|
| 420
|
WorldRadio
|
33
|
1
|
Stub
|
Low
|
| 421
|
Norsk Radio Relæ Liga
|
33
|
1
|
Start
|
Mid
|
| 422
|
Asocijacija radioamatera u Bosni i Hercegovini
|
33
|
1
|
Stub
|
Mid
|
| 423
|
Pakistan Amateur Radio Society
|
33
|
1
|
Stub
|
Mid
|
| 424
|
PSAT-2
|
33
|
1
|
Stub
|
Low
|
| 425
|
British DX Club
|
32
|
1
|
Start
|
Low
|
| 426
|
First Class CW Operators' Club
|
32
|
1
|
Stub
|
Low
|
| 427
|
Bangladesh Amateur Radio League
|
32
|
1
|
Stub
|
Mid
|
| 428
|
The Canadian Amateur
|
32
|
1
|
Stub
|
Low
|
| 429
|
Magnetic loop
|
31
|
1
|
NA
|
Mid
|
| 430
|
Quarter Century Wireless Association
|
31
|
1
|
Stub
|
Low
|
| 431
|
Amateur Radio Association of Bahrain
|
31
|
1
|
Stub
|
Mid
|
| 432
|
Rede dos Emissores Portugueses
|
30
|
1
|
Stub
|
Mid
|
| 433
|
SEDSAT-1
|
30
|
1
|
Start
|
Low
|
| 434
|
Mumbai Amateur Radio Society
|
28
|
0
|
Start
|
Low
|
| 435
|
Íslenskir Radíóamatörar
|
28
|
0
|
Stub
|
Mid
|
| 436
|
UoSAT-4
|
28
|
0
|
Stub
|
Low
|
| 437
|
CQ DL
|
28
|
0
|
Stub
|
Low
|
| 438
|
Mbanna Kantako
|
27
|
0
|
Start
|
Low
|
| 439
|
Skip (radio)
|
27
|
0
|
NA
|
Low
|
| 440
|
Malta Amateur Radio League
|
27
|
0
|
Start
|
Mid
|
| 441
|
Suomen Radioamatööriliitto
|
27
|
0
|
Stub
|
High
|
| 442
|
Liga Colombiana de Radioaficionados
|
27
|
0
|
Stub
|
Mid
|
| 443
|
Federacion de Radioaficionados de Cuba
|
27
|
0
|
Stub
|
Mid
|
| 444
|
Emirates Amateur Radio Society
|
27
|
0
|
Stub
|
Mid
|
| 445
|
Turbo Dispatch
|
26
|
0
|
Start
|
Low
|
| 446
|
Amateur Station Operator's Certificate
|
26
|
0
|
NA
|
Mid
|
| 447
|
Royal Naval Amateur Radio Society
|
25
|
0
|
Stub
|
Low
|
| 448
|
Worked All Continents
|
25
|
0
|
NA
|
Low
|
| 449
|
Global Amateur Radio Emergency Communications Conference
|
25
|
0
|
Stub
|
Low
|
| 450
|
Macau Amateur Radio Society
|
25
|
0
|
Stub
|
High
|
| 451
|
Croatian Amateur Radio Association
|
25
|
0
|
Stub
|
Mid
|
| 452
|
UoSAT-3
|
25
|
0
|
Stub
|
Low
|
| 453
|
Parallel Logic Radio Interface
|
24
|
0
|
Start
|
Low
|
| 454
|
Wireless Institute Civil Emergency Network
|
24
|
0
|
Start
|
Low
|
| 455
|
RIGblaster Nomic
|
23
|
0
|
Stub
|
Low
|
| 456
|
Chinese Taipei Amateur Radio League
|
23
|
0
|
Stub
|
Low
|
| 457
|
Savez Radio-Amatera Srbije
|
23
|
0
|
Stub
|
Mid
|
| 458
|
Amateur radio call signs of the United Kingdom
|
23
|
0
|
NA
|
Low
|
| 459
|
UoSAT-5
|
23
|
0
|
Stub
|
Low
|
| 460
|
3Y5X Bouvet Island DXpedition
|
23
|
0
|
Stub
|
Mid
|
| 461
|
Simulated Emergency Test
|
22
|
0
|
Stub
|
Low
|
| 462
|
OZ7IGY
|
22
|
0
|
Stub
|
Low
|
| 463
|
Singapore Amateur Radio Transmitting Society
|
22
|
0
|
Stub
|
High
|
| 464
|
Liga Panameña de Radioaficionados
|
22
|
0
|
Stub
|
Mid
|
| 465
|
Amateur radio call signs of Antarctica
|
22
|
0
|
NA
|
Low
|
| 466
|
Dalton Pritchard
|
22
|
0
|
Start
|
Low
|
| 467
|
Ak-Sar-Ben Amateur Radio Club
|
22
|
0
|
Start
|
Low
|
| 468
|
Friendship Radiosport Games
|
21
|
0
|
Start
|
Low
|
| 469
|
Royal Union of Belgian Radio Amateurs
|
21
|
0
|
Stub
|
Mid
|
| 470
|
Radio Club Venezolano
|
21
|
0
|
Stub
|
Mid
|
| 471
|
CQ VHF Magazine
|
21
|
0
|
Stub
|
Low
|
| 472
|
Call signs in Barbados
|
21
|
0
|
Start
|
Low
|
| 473
|
Leslie R. Mitchell
|
20
|
0
|
C
|
Low
|
| 474
|
QRO
|
19
|
0
|
NA
|
NA
|
| 475
|
Union of Swiss Short Wave Amateurs
|
19
|
0
|
Stub
|
High
|
| 476
|
Österreichischer Versuchssenderverband
|
19
|
0
|
Stub
|
High
|
| 477
|
Aruba Amateur Radio Club
|
19
|
0
|
Stub
|
Mid
|
| 478
|
Worked All States
|
18
|
0
|
NA
|
Low
|
| 479
|
Q signal
|
18
|
0
|
NA
|
NA
|
| 480
|
Club de Radioexperimentadores de Nicaragua
|
18
|
0
|
Stub
|
Mid
|
| 481
|
BRICSat-2
|
18
|
0
|
Start
|
Low
|
| 482
|
Indian Wireless Telegraph (Amateur Service) Rules, 1978
|
17
|
0
|
Stub
|
Mid
|
| 483
|
Réseau Luxembourgeois des Amateurs d'Ondes Courtes
|
17
|
0
|
Stub
|
High
|
| 484
|
HamSCI
|
17
|
0
|
Stub
|
Low
|
| 485
|
Qro
|
16
|
0
|
NA
|
NA
|
| 486
|
Bulgarian Federation of Radio Amateurs
|
16
|
0
|
Stub
|
Mid
|
| 487
|
Iraqi Amateur Radio Society
|
16
|
0
|
Stub
|
Mid
|
| 488
|
Kazakhstan Federation of Radiosport and Radio Amateur
|
16
|
0
|
Stub
|
Mid
|
| 489
|
Contesting technology
|
15
|
0
|
Start
|
Low
|
| 490
|
Radio ZS
|
15
|
0
|
NA
|
Low
|
| 491
|
Association of Radio Amateurs of Slovenia
|
15
|
0
|
Stub
|
Mid
|
| 492
|
Radio Club Uruguayo
|
15
|
0
|
Stub
|
Mid
|
| 493
|
Unió de Radioaficionats Andorrans
|
15
|
0
|
Stub
|
Mid
|
| 494
|
Mongolian Amateur Radio Society
|
14
|
0
|
Stub
|
Mid
|
| 495
|
Club de Radio Aficionados de El Salvador
|
14
|
0
|
Stub
|
Mid
|
| 496
|
Manly-Warringah Radio Society
|
13
|
0
|
Start
|
Mid
|
| 497
|
Associacao de Radioamadores da Linha de Cascais
|
13
|
0
|
Start
|
Low
|
| 498
|
Radar Fence Transponder
|
13
|
0
|
Start
|
Low
|
| 499
|
Official Observer Coordinator
|
12
|
0
|
NA
|
Low
|
| 500
|
Mongolian Radio Sport Federation
|
12
|
0
|
Stub
|
Mid
|
| 501
|
Radio Club Paraguayo
|
12
|
0
|
Stub
|
Mid
|
| 502
|
Radio Club Peruano
|
12
|
0
|
Stub
|
Mid
|
| 503
|
Islands on the air
|
12
|
0
|
NA
|
Low
|
| 504
|
South Jersey Radio Association
|
11
|
0
|
Start
|
Low
|
| 505
|
JNA Wireless Association
|
11
|
0
|
Start
|
Low
|
| 506
|
Club de Radioaficionados de Guatemala
|
11
|
0
|
Stub
|
Mid
|
| 507
|
Lesotho Amateur Radio Society
|
11
|
0
|
Stub
|
Mid
|
| 508
|
Len Jarrett
|
11
|
0
|
Start
|
Low
|
| 509
|
ARRL International Humanitarian Award
|
11
|
0
|
Stub
|
Mid
|
| 510
|
Qrc
|
10
|
0
|
NA
|
NA
|
| 511
|
VHF/UHF Century Club
|
10
|
0
|
NA
|
Low
|
| 512
|
Syrian Scientific Technical Amateur Radio Society
|
10
|
0
|
Stub
|
Mid
|
| 513
|
PCSat2
|
9
|
0
|
Stub
|
Low
|
| 514
|
List of HSMM nodes
|
9
|
0
|
List
|
Low
|
| 515
|
Texas DX Society
|
9
|
0
|
Start
|
Low
|
| 516
|
Estonian Radio Amateurs' Union
|
9
|
0
|
Stub
|
Mid
|
| 517
|
Asociația Radioamatorilor din Moldova
|
9
|
0
|
Stub
|
Mid
|
| 518
|
Radioamaterski Sojuz na Makedonija
|
9
|
0
|
Stub
|
Mid
|
| 519
|
Latvijas Radio Amatieru Līga
|
9
|
0
|
Stub
|
Mid
|
| 520
|
Radio Society of Sri Lanka
|
9
|
0
|
Stub
|
Mid
|
| 521
|
Radio Club de Honduras
|
9
|
0
|
Stub
|
Mid
|
| 522
|
Mauritius Amateur Radio Society
|
9
|
0
|
Stub
|
Mid
|
| 523
|
Nordic Radio Amateur Union
|
9
|
0
|
Stub
|
Low
|
| 524
|
Kenwood TS-820S
|
9
|
0
|
NA
|
Low
|
| 525
|
Official Observer
|
8
|
0
|
NA
|
NA
|
| 526
|
QRZ
|
8
|
0
|
NA
|
NA
|
| 527
|
Orbiting Picosat Automatic Launcher
|
8
|
0
|
Start
|
Low
|
| 528
|
LI2B
|
7
|
0
|
NA
|
Low
|
| 529
|
Telsiz ve Radyo Amatörleri Cemiyeti
|
7
|
0
|
NA
|
Mid
|
| 530
|
SK7MQ
|
7
|
0
|
Stub
|
Low
|
| 531
|
Hy-Gain Antennas and Rotators
|
6
|
0
|
NA
|
Low
|
| 532
|
Northwest Amateur Radio Society
|
6
|
0
|
Start
|
Low
|
| 533
|
Replexer
|
5
|
0
|
NA
|
Mid
|
| 534
|
Ham net
|
5
|
0
|
NA
|
NA
|
| 535
|
Wireless Institute of Queensland
|
5
|
0
|
Start
|
Low
|
| 536
|
Yaesu FT-221
|
4
|
0
|
NA
|
Low
|
| 537
|
Qra
|
4
|
0
|
NA
|
NA
|
| 538
|
Antenna height above average terrain
|
3
|
0
|
NA
|
Low
|
| 539
|
QRN
|
3
|
0
|
NA
|
NA
|
| 540
|
Q signals
|
3
|
0
|
NA
|
NA
|
| 541
|
QNB (amateur radio)
|
2
|
0
|
NA
|
NA
|
| 542
|
QNB:Amateur Radio
|
2
|
0
|
NA
|
NA
|
| 543
|
Vanity call sign
|
2
|
0
|
NA
|
Low
|
| 544
|
Turkish Amateur Radio Association
|
2
|
0
|
NA
|
NA
|
| 545
|
LX National QSL Bureau
|
2
|
0
|
Stub
|
Low
|
| 546
|
Q-signal
|
1
|
0
|
NA
|
NA
|
| 547
|
Q Codes
|
0
|
0
|
NA
|
NA
|
| 548
|
Q Code
|
0
|
0
|
NA
|
NA
|
| 549
|
Section emergency coordinator
|
0
|
0
|
NA
|
Low
|
| 550
|
Section traffic manager
|
0
|
0
|
NA
|
Low
|
| 551
|
Amateur radio call signs of Ireland
|
0
|
0
|
NA
|
Low
|
| 552
|
Amateur radio call signs of Oceania
|
0
|
0
|
NA
|
Low
|
| 553
|
Call signs in Pakistan
|
0
|
0
|
NA
|
Low
|
| 554
|
Call signs in South Africa
|
0
|
0
|
NA
|
NA
|
| 555
|
Call signs in Ireland
|
0
|
0
|
NA
|
Low
|
| 556
|
Amateur radio call signs of Africa
|
0
|
0
|
NA
|
NA
|
| 557
|
2200m band
|
0
|
0
|
NA
|
NA
|
