Richard Blaine, operator of Radio Casablanca, wrote and asked why the station didn’t appear in the table of ratio’s of listener posts vs message threads (broadcasts) in the Shortwave Pirate Radio 2015 – A Year In Review post. This ratio can be considered a proxy for the average number of listeners reporting hearing each broadcast for a station. Perhaps a sort of popularity rating.

I looked into calculations, and saw that table was limited to stations with 10 or more logging threads, while there were only 7 for Radio Casablanca. This resulted in some stations being cut off. So I re-ran the numbers, this time with no cutoff:

30,Drunken DJ Radio
27,WEAK
21,Pumpkin Patch Radio
21,Radio Trump
20,Native Radio
19,Girl Scout Radio
18,WPOD
17,Germany Calling
17,Generation Wild 100
16.8333,Wolverine Radio
16.4286,Radio Casablanca
16,W807
15.5,Hard Tack Radio
15.5,Radio Halloween
15.0769,XFM
15,Radio Cinco De Mayo
15,Crazy Wave Radio
14.5,Up Against The Wall Radio
14,KAOS
14,Sousa Station
13.5,New Horizons Radio
13,Mushroom Radio
12.5,Free Thinker Radio
12.5,Nordic Wind Radio
12.234,Radio Free Whatever
12,Edmund Fitzgerald Radio
11,NRUI
11,Radio Enterhaken
10.8571,Random Radio
10.8,Radio Gallifrey Intergalactic
10.75,Pirate Clip Radio
10.6842,Burn It Down Radio
10.6667,Twangy Radio
10.2456,The Crystal Ship
10,Big Boobs Radio
10,WAHR
10,Rcok and Roll Radio
9.5,Northwoods Radio
9.5,Appalachia Radio
9.33333,Radio Clandestine
9.18182,WMID
9.10667,XLR8
9,WKND
9,Radio Marlene
9,COOLAM
9,D.B. Cooper Memorial
9,Hummingbird Radio
8.85714,THX1138
8.85714,X Minus One
8.83333,WRR
8.75,Peskie Party Radio
8.5122,Ghost Shortwave
8.29412,Insane Radio
8.28571,Undercover Radio
8.25,WREC
8,XEROX
8,Frederick Chopin Radio
8,WPDR
8,Ringo
8,Pirate Nation Radio
7.85714,KCPR
7.66667,CYOT
7.6,KHAT
7.55556,Channel Z
7.5,Radio Azteca
7.4,Brockett 99
7.25,Renegade Radio
7.2,Radio Broadcaster
7.07692,Radio True North
7,KIPM
7,WGWR
7,WHJR
7,WPIG
7,Channel X
7,Big Johnson Radio
7,Radio Mirror Park
6.95,CKUT Relay
6.9375,Rave On Radio
6.85714,Canadian Radio After Dark
6.85714,Radio Fusion Radio
6.80556,Amphetamine Radio
6.75,Javelina Radio
6.66667,WBOG
6.66667,WOLF
6.50746,Liquid Radio
6.5,Captain Morgan
6.33333,Cool AM
6.33333,Boombox Radio
6.25806,Moonlight Radio
6.25806,PeeWee Radio
6.2,WHYP
6.07143,BBC Pirate Radio
6,Radio Free Mars Radio
6,Halloween Radio
6,KBOX
6,Kid From Brooklyn
6,Muffin Man
6,Evil Elvis Radio
6,SIRIUS XM Relay
6,Friday Night Radio
5.88889,Blue Ocean Radio
5.85714,Happy Hanukkah Radio
5.75,Radio Ga Ga
5.66667,The Bangalore Poacher
5.66667,Weather Control Radio
5.66667,CPRRS
5.6,WJD
5.58108,Cold Country Canada
5.5,WLIS
5.4,Partial India Radio
5.33333,Pirate Radio Boston
5.33333,Network 51
5.25,WEZY
5.2,Radio Illuminati
5,NOEL
5,Solar Centric Radio
5,Hobart Radio
5,Christmas Radio
4.66667,Radio Caroline
4.66667,KOTH
4.57143,Radio Ronin
4.5,WAZU
4.5,Stars And Stripes
4.33333,Radio Paisano
4,Turtlehead Radio
4,Southern Relay Service
4,Satan Radio
4,YHWH
4,Radio Bingo
4,Rainin Tacos
3.57143,Radio Dr Tim
3.5,Toynbee Radio
3.5,Black Cat Radio
3.5,Radio Free ADD
3.39286,Old Time Radio
3,Laser Hot Hits
3,Chairman Of The Board Radio
3,Radio Ritalin
3,KITE SDR Radio
3,Tiger Radio
2.9,KVR
2.6,Vivian Girls Radio
2.5,Chamber Pot Radio
2,KAMP
2,Fruitcake Station
2,WRRI
2,Barn Radio
2,Pirate Pixie
1,Radio Morania
1,Radio Garbonzo
1,Progressive Radio
Avg Ratio 8.08803

Some very different results at the top of the chart! This version does not leave out stations that only had a few transmissions in 2015, such as some of the seasonal stations.

Thanks for pointing this out, Richard. And thanks for the tip about betting on number 22!

Here’s the raw data (station name, number of posts, number of threads, ratio):
Liquid Radio 872 134 6.50746
Amphetamine Radio 735 108 6.80556
XLR8 683 75 9.10667
The Crystal Ship 584 57 10.2456
Radio Free Whatever 575 47 12.234
Wolverine Radio 505 30 16.8333
Cold Country Canada 413 74 5.58108
Old Time Radio 380 112 3.39286
Ghost Shortwave 349 41 8.5122
Captain Morgan 247 38 6.5
Burn It Down Radio 203 19 10.6842
XFM 196 13 15.0769
Moonlight Radio 194 31 6.25806
PeeWee Radio 194 31 6.25806
Radio True North 184 26 7.07692
Radio Ga Ga 184 32 5.75
Insane Radio 141 17 8.29412
CKUT Relay 139 20 6.95
Channel Z 136 18 7.55556
Radio Casablanca 115 7 16.4286
Rave On Radio 111 16 6.9375
WMID 101 11 9.18182
WREC 99 12 8.25
Northwoods Radio 95 10 9.5
Boombox Radio 95 15 6.33333
Drunken DJ Radio 90 3 30
BBC Pirate Radio 85 14 6.07143
Random Radio 76 7 10.8571
Free Thinker Radio 75 6 12.5
THX1138 62 7 8.85714
X Minus One 62 7 8.85714
Undercover Radio 58 7 8.28571
Appalachia Radio 57 6 9.5
WPIG 56 8 7
KCPR 55 7 7.85714
Radio Gallifrey Intergalactic 54 5 10.8
Blue Ocean Radio 53 9 5.88889
WRR 53 6 8.83333
Toynbee Radio 49 14 3.5
Pirate Radio Boston 48 9 5.33333
Canadian Radio After Dark 48 7 6.85714
Radio Fusion Radio 48 7 6.85714
Pirate Clip Radio 43 4 10.75
Happy Hanukkah Radio 41 7 5.85714
Mushroom Radio 39 3 13
Girl Scout Radio 38 2 19
KHAT 38 5 7.6
Brockett 99 37 5 7.4
WPOD 36 2 18
Radio Broadcaster 36 5 7.2
Peskie Party Radio 35 4 8.75
Germany Calling 34 2 17
Generation Wild 100 34 2 17
CPRRS 34 6 5.66667
Radio Ronin 32 7 4.57143
Twangy Radio 32 3 10.6667
WHYP 31 5 6.2
Hard Tack Radio 31 2 15.5
Radio Halloween 31 2 15.5
WAHR 30 3 10
Solar Centric Radio 30 6 5
Renegade Radio 29 4 7.25
KVR 29 10 2.9
Up Against The Wall Radio 29 2 14.5
KIPM 28 4 7
Radio Clandestine 28 3 9.33333
WJD 28 5 5.6
KOTH 28 6 4.66667
Partial India Radio 27 5 5.4
WEAK 27 1 27
New Horizons Radio 27 2 13.5
Javelina Radio 27 4 6.75
Radio Illuminati 26 5 5.2
Radio Dr Tim 25 7 3.57143
Nordic Wind Radio 25 2 12.5
CYOT 23 3 7.66667
WLIS 22 4 5.5
Pumpkin Patch Radio 21 1 21
WEZY 21 4 5.25
Big Johnson Radio 21 3 7
Radio Trump 21 1 21
WBOG 20 3 6.66667
WOLF 20 3 6.66667
Native Radio 20 1 20
Cool AM 19 3 6.33333
WAZU 18 4 4.5
The Bangalore Poacher 17 3 5.66667
Weather Control Radio 17 3 5.66667
XEROX 16 2 8
Frederick Chopin Radio 16 2 8
W807 16 1 16
Network 51 16 3 5.33333
Radio Azteca 15 2 7.5
Radio Cinco De Mayo 15 1 15
Crazy Wave Radio 15 1 15
KAOS 14 1 14
Radio Caroline 14 3 4.66667
Sousa Station 14 1 14
Radio Paisano 13 3 4.33333
Vivian Girls Radio 13 5 2.6
Radio Free Mars Radio 12 2 6
Edmund Fitzgerald Radio 12 1 12
KBOX 12 2 6
Kid From Brooklyn 12 2 6
NRUI 11 1 11
Radio Enterhaken 11 1 11
Big Boobs Radio 10 1 10
Rcok and Roll Radio 10 1 10
WKND 9 1 9
Radio Marlene 9 1 9
COOLAM 9 1 9
D.B. Cooper Memorial 9 1 9
Stars And Stripes 9 2 4.5
Hummingbird Radio 9 1 9
Turtlehead Radio 8 2 4
Satan Radio 8 2 4
YHWH 8 2 4
WPDR 8 1 8
Ringo 8 1 8
Pirate Nation Radio 8 1 8
WGWR 7 1 7
WHJR 7 1 7
Black Cat Radio 7 2 3.5
Radio Free ADD 7 2 3.5
Channel X 7 1 7
Radio Mirror Park 7 1 7
Halloween Radio 6 1 6
Muffin Man 6 1 6
Evil Elvis Radio 6 1 6
SIRIUS XM Relay 6 1 6
Friday Night Radio 6 1 6
Chamber Pot Radio 5 2 2.5
NOEL 5 1 5
Hobart Radio 5 1 5
Christmas Radio 5 1 5
Southern Relay Service 4 1 4
KAMP 4 2 2
Fruitcake Station 4 2 2
Radio Bingo 4 1 4
Rainin Tacos 4 1 4
Laser Hot Hits 3 1 3
Chairman Of The Board Radio 3 1 3
Radio Ritalin 3 1 3
KITE SDR Radio 3 1 3
Tiger Radio 3 1 3
WRRI 2 1 2
Barn Radio 2 1 2
Pirate Pixie 2 1 2
Radio Morania 1 1 1
Radio Garbonzo 1 1 1
Progressive Radio 1 1 1

One risk here is that the same transmission could be logged in two, or even more, threads, which would reduce this ratio.