The GMDX Summer VHF Challenge 2025: 6m & 4m CW, Voice and Digital Modes
The GMDX Summer VHF Challenge will take place beginning 00:00 on Monday 12th May until 2359 on Sunday 6th July.
All GMDX members worldwide are welcome to enter.
This is a single event using CW, Voice or Digital Modes on both 4m and 6m bands. Acceptable voice modes are SSB, AM or FM. Entrants are expected not to set up FT8 or Digital modes in automated robot mode. You are trusted to operate your station manually.
The overall winner will have worked the most 4-digit maidenhead locator squares (e.g. IO72) on 4m and 6m to give the highest combined score. In order to have the leading score, it is expected operators would have to make contacts on both 4m and 6m using all modes. Note that DXCC Countries are not counted, only locator squares.
CHANGE FOR 2025: Please note that you can work the same locator on multiple modes on 6m and 4m. Each locator square worked on each mode and band will count towards the total for each band. For example, work a station in IO72 on Voice, CW and Digital on the 4m band. These 3x QSO’s will count towards the 4m locator total. You can also work IO72 again on all modes on 6m band for another 3x additional locator square QSO’s towards the 6m locator total.
A league table will be produced fortnightly. GMDX will provide prizes to each mode leader and the overall leader. The results tables will be based on total of 4-digit maidenhead locators worked on 4m and 6m for each station.
Submit your cumulative totals fortnightly as per table below. We will publish the tables as soon as possible after the cutoff. Final submission during Monday 7th July
Entry submission dates
- 1. 18:00 on Sunday 25th May
- 2. 18:00 on Sunday 8th June
- 3. 18:00 on Sunday 22nd June
- 4. 18:00 on Monday 7th July
Submit your totals using this form https://forms.gle/EKpDBTCt8K4CNEVW8
If you don’t work a band or mode just enter 0.
Please note, operators are requested to send in their updated and current scores fortnightly. Any operator sending in a winning score on the final week with no previous entries will not be included. In the event of 2 or more operators having the same total number of locator squares, the station with the most mode slots will be the winner.
In all disagreements the GMDX judge’s decision will be final.
For the purposes of a Digest article and Website content, please send details and photos of your station, especially antennas and perhaps a note of a memorable contact to mm0gpz@gmail.com
Good Luck and 73
Gordon MM0GPZ
Summer VHF Activity Challenge 2025
Period 1 Results
This year we have tweaked the rules so that a CW, Voice or digital QSO with stations in a single locator square will now count as 3 QSO’s rather than 1 as in previous years. This allows more potential for scoring QSO’s and therefore more activity.
Unfortunately, only 3 reports were received although conditions have been reasonable into EU and many contacts were also made into NA/SA. Hopefully many Ops will post reports at the end of 2nd period on Sunday 8th June.
Here are the results of the GMDX Summer VHF Activity Challenge after the 1st two-week period.
Martin GM8IEM is just in the lead with a grand total of 152 locator squares. GM8IEM’s QSO’s are all digital with 127 on 6m and 25 made on 4m. MM0GOR QSO’s are all on 6m with 16 CW, 4 SSB and 130 digital.
Next submission date/time is 18:00 on Sunday 8th June
Good Luck and 73
Gordon MM0GPZ