By Ray Conrad, NM2O
This report presents an analysis of the active USA prefixes in the 2022 WPX SSB contest.
The FCC could possibly issue 930 prefixes. Of these, 820 are in the “lower 48.”
Some prefixes such as NP0 and NP1 have no calls issued now and may have never been issued.
This analysis of callsigns is based upon a master file received from AA3B, the WPX SSB/CW Director. The table was prepared using a custom data analysis script written by N3QE. Thanks to Bud and Tim.
Of the 930 possible prefixes, 480 were active and 450 were inactive. 248 prefixes had only one active station. The activity drops off for two or more stations.
N3 is the most popular US prefix with 41 instances. The “traditional prefixes” such as K1, N1, and W1 are well represented with more than 20 active stations.
Here’s the table of active prefixes. The blanks (holes) represent inactive prefixes. There are patterns of holes.
AA0 AA1 AA2 AA3 AA4 AA5 AA6 AA8 AA9
AB1 AB2 AB3 AB4 AB5 AB6 AB7 AB8
AC0 AC1 AC2 AC3 AC4 AC7 AC8 AC9
AD0 AD1 AD2 AD4 AD5 AD8
AE0 AE1 AE2 AE4 AE5 AE6 AE8 AE9
AF2 AF4 AF5 AF6 AF7 AF9
AG0 AG1 AG2 AG3 AG4 AG5 AG6 AG7 AG8 AG9
AH6 AH7
AI0 AI1 AI2 AI4 AI5 AI6 AI7 AI8
AJ0 AJ3 AJ4 AJ6 AJ9
AK0 AK1 AK3 AK4 AK5 AK6 AK9
AL1 AL2 AL7
K0 K1 K2 K3 K4 K5 K6 K7 K8 K9
KA0 KA1 KA2 KA3 KA4 KA5 KA6 KA7 KA8 KA9
KB0 KB1 KB2 KB3 KB4 KB6 KB7 KB8 KB9
KC0 KC1 KC2 KC3 KC4 KC6 KC7 KC8 KC9
KD0 KD2 KD3 KD4 KD5 KD6 KD7 KD8 KD9
KE0 KE1 KE2 KE3 KE4 KE5 KE6 KE7 KE8
KF0 KF2 KF3 KF4 KF5 KF6 KF7 KF8 KF9
KG1 KG3 KG4 KG5 KG6 KG7 KG9
KH2 KH6 KH7
KI1 KI2 KI4 KI5 KI6 KI7 KI8
KJ0 KJ4 KJ5 KJ6 KJ7 KJ9
KK2 KK4 KK5 KK6 KK7
KL1 KL2 KL5 KL7
KM1 KM2 KM4 KM6 KM7 KM9
KN0 KN2 KN4 KN5 KN6 KN7 KN8
KO3 KO4 KO8 KO9
KP2 KP3 KP4
KQ1 KQ2 KQ3
KR0 KR1 KR3 KR4 KR5
KS2 KS3 KS4 KS7
KT1 KT3 KT4 KT5 KT6 KT7
KU1 KU2 KU4 KU6 KU8
KV0 KV1 KV2 KV4 KV8
KW0 KW4 KW6 KW8 KW9
KX2 KX4 KX8
KY0 KY4 KY7 KY9
KZ1 KZ3 KZ5 KZ8 KZ9
N0 N1 N2 N3 N4 N5 N6 N7 N8 N9
NA4 NA6 NA8 NA9
NB1 NB3 NB4
NC0 NC1 NC4 NC7 NC9
ND0 ND1 ND2 ND3 ND7 ND8
NE1 NE3 NE4 NE7 NE8 NE9
NF3 NF4 NF5 NF6 NF8 NF9
NG0 NG1 NG2 NG3 NG6
NH6 NH7
NI0 NI4
NJ1 NJ6 NJ8
NK2 NK4 NK5 NK8
NL7 NL8 NM9
NN0 NN2 NN3 NN4 NN6 NN7 NN8 NN9
NO3 NO9
NP3 NP4
NQ3 NQ4 NQ5 NQ8 NQ9
NR3 NR4 NR6 NR7
NS0 NS1 NS2 NS3 NS4
NT0 NT3 NT5 NT6
NU0 NU2 NU3 NU4 NU5 NU7
NV4 NV9
NW0 NW2 NW3 NW5 NW6
NX3 NX4 NX6 NX7 NX8 NX9
NY0 NY1 NY2 NY3 NY4 NY7 NY9
NZ2 NZ7
W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 WA0 WA1 WA2 WA3 WA4 WA5 WA6 WA7 WA8 WA9 WB0 WB1 WB2 WB4 WB5 WB6 WB7 WB8 WB9 WC3 WC4 WC5 WC6 WC8 WC9 WD0 WD4 WD5 WD6 WD7 WD8 WD9 WE2 WE5 WE6 WE7 WE8 WE9 WF0 WF3 WF6 WF8 WF9 WG4 WG7 WH2 WH6 WH7 WI0 WI3 WI7 WI9 WJ0 WJ1 WJ4 WK1 WK2 WK5 WK7 WL7 WM0 WM3 WN2 WN3 WN4 WN6 WN7 WN8 WO1 WO2 WO4 WO7 WP2 WP3 WP4 WQ5 WQ6 WQ9 WR2 WR4 WR8 WR9 WS4 WS5 WS7 WS9 WT0 WT1 WT4 WT8 WU2 WV1 WV2 WW0 WW2 WW3 WW4 WW5 WW7 WX0 WX3 WX4 WX7 WY3 WZ0 WZ1 WZ4 WZ5 WZ6 WZ7 WZ8
The table presents the number of active prefixes in each call area of the 93 possible prefixes. 93 prefixes are possible in the 2nd call area where AH2, KL2, KP2, NP2 and WP2 calls are issued.
The number of active stations per prefix.
Let me know if you have a question about a specific prefix.
73,
Ray Conrad, NM2O
nm2o@outlook.com