I wrote this article some time ago in response to Wayne N6NB’s tactics for fabricating large rover scores. I kept this private for some time but decided to make it public so all can see how anyone can plan a contest win with a little bit of math.

So I decided to write a program to generate some pack rover logs and determine what does the 100 QSO limit mean in real life when it comes to scoring a classic rover. I generated Cabrillo logs with my PERL code and then imported the logs into Roverlog 2.6.5 to do the scoring. Without gaming the rules more than folks are already attempting, here’s what I’ve learned.

First an 11-band (50 MHz – 24 GHz) station will hit 99 QSOs after visiting 3 grids with a similarly outfitted station. I adopted this configuration vs. a 10-band rover for my calculations, since it made the jig calculations a bit easier to deal with. That being said, these scores leave a few points on the table and aren’t truly maximum scores. Two stations working on 11-bands, across 3 grids yields a Roverlog score breakdown of:

RoverLog QSOs by Activated Grid: Grid QSOs Grid QSOs Grid QSOs FM18 33 FM09 33 FM08 33 RoverLog Score Summary, Using new rules: Band Qs Val Pts Mults 50 9 1 9 3 144 9 1 9 3 222 9 2 18 3 432 9 2 18 3 902 9 3 27 3 1.2G 9 3 27 3 2.3G 9 4 36 3 3.4G 9 4 36 3 5.7G 9 4 36 3 10G 9 4 36 3 24G 9 4 36 3 Grids activated: 3 Totals: 99 288 36 Claimed Score: 10368

Since it appears the CA pack rovers sent out 9 rovers, I decided to calculate what score a single rover working 8 team members could attain where all stayed within 3 grids. The Roverlog score breakdown for the 9 rovers all working each other in 3 grids yields a score of:

RoverLog Score Summary, Using new rules: Band Qs Val Pts Mults 50 72 1 72 3 144 72 1 72 3 222 72 2 144 3 432 72 2 144 3 902 72 3 216 3 1.2G 72 3 216 3 2.3G 72 4 288 3 3.4G 72 4 288 3 5.7G 72 4 288 3 10G 72 4 288 3 24G 72 4 288 3 Grids activated: 3 Totals: 792 2304 36 Claimed Score: 82944

This would (almost) exhaust all members, under the 100 QSO rule, since you just worked each one 99 times and you could not work anyone else in the group of 8. Game over dude!

To begin to maximize a rover’s score, one would have to spread out the team members across multiple grids gaining grid multipliers. I came up with the following combination’s where each letter A-I represents one of 9 unique call signs or stations. If each group of 3 letter call sign triplets worked their jig across 12 numbered grids you’d get a combination of QSOs something like this:

Grid1,2,3 - ABC DEF GHI - AB AC BC DE DF EF GH GI HI Grid4,5,6 - ADG BEI CFH - AD AG DG BE BI EI CF CH FH Grid7,8,9 - AEH BFG CDI - AE AH EH BF BG FG CD CI DI Grid10,11,12 - AFI BDH CEG - AF AI FI BD BH DH CE CG EG

Where each lettered station in the group of 3 could work the other 2, from each of the 4 grid-triplets (corner). Notice not a single pair of stations is ever repeated. This works out to any pair working 99 QSOs across each of the 4 grid-triplet groups. That means station A and B each get 99 QSOs for their jig around grids 1,2 and 3 and can no longer work each other in the contest. Station A gets 99 (AB) QSOs plus 99 (AC) QSOs or 198 QSOs for their first grid-triplet jig. This breaks down like this for Grid1,2,3 and stations A, B, and C:

A1-B1, A1-B2, A1-B3, A2-B1, A2-B2, A2-B3, A3-B1, A3-B2, A3-B3 A1-C1, A1-C2, A1-C3, A2-C1, A2-C2, A2-C3, A3-C1, A3-C2, A3-C3 B1-C1, B1-C2, B1-C3, B2-C1, B2-C2, B2-C3, B3-C1, B3-C2, B3-C3

Here’s the Roverlog score output for all stations for the entire 12 grid 9 rovers jig:

RoverLog QSOs by Activated Grid: Grid QSOs Grid QSOs Grid QSOs FM16 66 FM17 66 FN00 66 FM18 66 FN01 66 FM19 66 FM06 66 FM07 66 FM08 66 FM09 66 FN10 66 FN11 66 RoverLog Score Summary, Using new rules: Band Qs Val Pts Mults 50 72 1 72 12 144 72 1 72 12 222 72 2 144 12 432 72 2 144 12 902 72 3 216 12 1.2G 72 3 216 12 2.3G 72 4 288 12 3.4G 72 4 288 12 5.7G 72 4 288 12 10G 72 4 288 12 24G 72 4 288 12 Grids activated: 12 Totals: 792 2304 144 Claimed Score: 331776

Using the original 3 grid, 2 station jig described at the top of this article, one can now see how this high claimed score can be broken down. It follows that:

792 QSOs = ( 99 (QSOs per grid) * 4 (grid triplets) * 2 (teams per grid triplet) )

2304 QSO Pts = ( 288 (QSO pts) * 4 (grid triplets) * 2 (teams per grid triplet) )

144 Grids = ( 12 (unique grids worked) * 11 (bands) + 12 (grids visited) )

**331,776 Score Pts** = (2304 (QSO pts)* 144 (grids) )

This is near the maximum theoretical high score a pack rover could attain with a moderately sized team. By the way, with the even distribution of stations spread across the grids, all stations end up with the exact same score.

To attempt to find the maximum theoretical score a single rover might attain in the same size team, you must spread the group or team members in a non-uniform way at the expense of certain team members scores. I calculated a maximum score can be achieved when you exhaust all team member QSOs by spreading them about 24 grids. You get station pair QSOs that look like this:

Grid1,2,3 - AB Grid4,5,6 - AC BC Grid7,8,9 - AD BD CD Grid10,11,12 - AE BE CE DE Grid13,14,15 - AF BF CF DF EF Grid16,17,18 - AG BG CG DG EG FG Grid19,20,21 - AH BH CH DH EH FH GH Grid22,23,24 - AI BI CI DI EI FI GI HI

As mentioned above some stations sacrifice their scores with fewer grids worked, for the benefit of one or two others who will attain the highest scores. Note Stations A and B visit all the grids and do the most traveling. They gain the most points, since they get all the grid multipliers. Compare this to Station I who gets just as many QSO points, but only visits and works 3 grids (22,23,24) per band. Here’s the Roverlog score breakdown for Station A or B’s log:

RoverLog QSOs by Activated Grid: Grid QSOs Grid QSOs Grid QSOs FN31 33 FM16 33 FM17 33 FM36 33 FN00 33 FM18 33 FM37 33 FN01 33 FM19 33 FM38 33 FN20 33 FM39 33 FN21 33 FM06 33 FM07 33 FM26 33 FM08 33 FM27 33 FM09 33 FM28 33 FN10 33 FM29 33 FN11 33 FN30 33 RoverLog Score Summary, Using new rules: Band Qs Val Pts Mults 50 72 1 72 24 144 72 1 72 24 222 72 2 144 24 432 72 2 144 24 902 72 3 216 24 1.2G 72 3 216 24 2.3G 72 4 288 24 3.4G 72 4 288 24 5.7G 72 4 288 24 10G 72 4 288 24 24G 72 4 288 24 Grids activated: 24 Totals: 792 2304 288 Claimed Score: 663552

Station A’s (or B’s) score computes as follows:

792 QSOs = ( 99 (QSOs) * 8 (grid triplets) * 1 (team per grid triplet) )

2304 QSO Pts = ( 288 (QSO Pts) * 8 (grid triplets) * 1 (team per grid triplet) )

288 Grids = ( 24 (unique grids worked) * 11 (bands) + 24 grids visited

**663,552 Score Pts **= (2304 (QSO Pts) * 288 (grids) )

Station I who gets just as many QSO points, but only visits and works 3 grids (22,23,24) per band yields only a 82,944 (2304 * 36) point final score, which is the same log case as the second Roverlog case from the top of this article.

No surprise, doubling the amount of grids one visits, doubles your score and at the expense of quite a bit of driving.

Here are the logs for the two main large scoring scenarios presented above. They are ZIP files each containing 9 logs and are for entertainment purposes only

Rover Logs for Uniform Grid Distribution

Rover Logs for Non-Uniform Grid Distribution

4,378 total views, 1 views today

## Leave a Reply