Many Geohashers have expressed concerns over how to communicate with other Geohashers when approaching a hashpoint location that is potentially inaccessible. In the event that this is the case, it is recommended that Geohashers in the vicinity of a hashpoint use the following two-way radio frequencies to communicate alternative locations for meetups:
| Continent | Radio Channel | Frequency |
|---|---|---|
| North America | FRS/GMRS Channel 6 | 462.68750 MHz |
| Amateur Radio | 146.520 MHz | |
| Europe | PMR446 Channel 6 | 446.06875 MHz |
| Australia/New Zealand | UHF CB Channel 26 | 477.05000 MHz |
