| GB4IMD | Cornwall, UK (Organisers) |
| GB4LD | Lizard Wireless Station, Bass Point, Cornwall, UK |
| GB150GM | Marconi150 Award Station |
| IY0CG | Castel Gandolfo (RM) |
| IY0GA | Capo Figari – Golfo Aranci (SS) – Sardinia Island |
| IY0IMD | Forte Michelangelo – Civitavecchia (RM) |
| IY0ORP | Osservatorio Geofisico di Rocca di Papa (RM) |
| IY0TC | Torre Chiaruccia – Santa Marinella (RM) |
| IY1MR | Rapallo (GE) |
| IY1SM | Santa Margherita Ligure (GE) |
| IY1SP | La Spezia – Museo Tecnico Navale |
| IY1TO | “Gino Lisa” Mirafiori (Turin) |
| IY4FGM | Villa Griffone – Pontecchio Marconi (BO) |
| IY5PIS | Coltano (PI) |
| IY6GM | Monte Cappuccini (AN) |
| IY7M | Molo San Cataldo (BA) |
| EI0MAR | Martello Tower, Dublin |
| EI3IMD | Tramore, Coastguard Station |
| EI150IMD | Rosslare, Co. Wexford, Marconi House |
| G2NM | Amberley Museum ARC, West Sussex, UK |
| GB0IMD | Weston Super Mare, UK |
| GB0MGY | Harlow RS, Essex, UK |
| GB2GMM | Totland Bay, Post Office, Isle Of Wight, UK |
| GX0MWT | Chelmsford ARS, Essex, UK |
| IY0MMR | Forte Monte Mario, Roma. |
| W1AA | Marion (Mass, USA) Marconi Transmitter Building site |
| K2M | Marconi Tower, Binghamton, NY, USA |
| K3S | Nuclear Ship Savannah, Baltimore, USA |
| K6KPH | Maritime Radio Historical Society, California, USA |
| KM1CC | Cape Cod RC, USA |
| N1M | Marconi Beach, South Wellfleet, MA, USA |
| OE24M | ORF Centre, Vienna, Austria |
| VO1IMD | Signal Hill, Newfoundland, Canada |
| W1WCC | Chatham, Massachusetts, Cape Cod, USA |
| W2GSB | Babylon, Long Island, NY |
| PA150IMD | Gouda & District Section Veron, Netherlands |
| GB4MHS | Museum of History & Science, Oxford, UK |
| GB2NH | Tide Mills Marconi Site, East Sussex, UK |
| VK2IMD | Hornsby & District ARC, Sydney, Australia |
| GB0CMS | Caister Marconi Station, Life Boat Station, Norfolk, UK |
| GB8MD | Telford & District ARS, Gwynedd |
| GB4MDI | Barry ARS, Lavernock Point, South Wales |
| EI7IMD | Brow Head, Crookhaven |
| IY1TTM | Tigullio Torre Marconi, Sestri Levante |
| K6KPH | Maritime Radio Historical Society, California, USA |
| VP8VPC | Stanley, Falkland Islands |
| IY7GMB | Circolo ARS, Bari |
| W2RC/IMD | Radio Central ARC, Rocky Point, New York |
| DL0BRF | Light Vessel Borkumriff, Borkum Island, Germany |
| WA3BAT | Philadelphia Museum Ship, Philadelphia, USA |
| GB5LT | Luttrells Tower, Hampshire, UK |
| G2LO | Borough Hill, Daventry, UK |
| G5XX | Borough Hill, Daventry, UK |
| II0GM | Rome, Italy |
| GB2IMD | Dragon ARC, The Old Waunfawr Transmitter Site, North Wales |
| GB2GM | Poldhu ARC, Cornwall, UK |
| CW1GM | Radiogrupo Sur, Uruguay |
| EA7URU | Cadiz, Spain |
| GB2MCW | Tide Mills Marconi Site, East Sussex, UK |
| GB4MPC | Marconi Point, Cullercoats, UK |
| GB2MRS | Marconi Radio receiving station, Somerton, Somerset, UK |
| 9H1MRC | Marconi Amateur Radio Circle, Malta |
| GB1SOM | Barry ARS, Lavernock Point, South Wales |
| HV9TVM | Vatican Radio , Vatican City |
| ND1U | Notre Dame, Indiana, USA |
| G3SKY | The Needles, Isle Of Wight, UK |
| IY0M | Santa Marinella, Rome |
| W2RTM | New Jersey Antique Radio Club, New Jersey, USA |
| GB2SJ | Souter Lighthouse, Tyne and Wear, UK |
