The Amateur Radio Civil Services Network (ARCSN) operates VHF and UHF  repeaters from Padukka on the outskirts of Colombo. The frequencies as below.

Band Frequency Shift
VHF (Padukka) 145.675 MHz -0.600 MHz
VHF (Gammaduwa) 145.150 MHz +0.600 MHz
UHF 439.925 MHz -4.800 MHz

 We welcome all hams to use these repeaters for their enjoyment.