The “radio reprogramming” will be funded with £24,000 from the Scottish Government and ensure VHF radios used by teams on the mountains and in helicopters are up-to-date.
The announcement was made after a meeting between Justice Secretary Michael Matheson and Scottish Mountain Rescue (SMR) chairman Damon Powell.
Mr Matheson said: “Recent events on the mountains have demonstrated clearly that mountain rescue team volunteers provide a vital public service, assisting in difficult searches and rescues, maximising survival chances and saving many lives every year.
“Rescue teams provide an outstanding service to communities and those venturing into Scotland’s mountains, hills and rural areas.
“That’s why I’m delighted to award an additional £24,000 to Scottish Mountain Rescue to begin the logistically difficult, but necessary, process of future-proofing all of their VHF radios which allow vital communication between team members in remote areas as well as with helicopter support teams.”
The funding has been welcomed by umbrella body Scottish Mountain Rescue.
Mr Powell said: “Scottish Mountain Rescue Teams are proud to provide a world-class voluntary search and rescue service 24 hours a day, 365 days of the year, free at the point of delivery.
“I am deeply grateful to all of the teams and other partner responders who continue to provide a vital public service for Scotland’s local communities.”
Mountain rescue teams have been involved in high-profile operations this year including the search for Tim Newton and Rachel Slater, who have not been seen since leaving to hike Ben Nevis on Valentine’s Day.
Latest figures show that in 2014 Scottish Mountain Rescue assisted 608 people over a total of 552 incidents, committing nearly 22,000 man hours to assisting those in need.
Since 2004, the Scottish Government has provided around £300,000 annually in grant funding to SMR and in 2012 increased the grant to £312,000.