Aircraft Frequencies 
Frequency Description
118.3  Christchurch tower
118.6  Mount Cook air radio
118.75  New frequency for Wigram airfield
119.0  Red Checkers air to air
119.2  Unattended airfields
119.5  Timaru - Nightly flight from Wellington calls when overhead Christchurch
120.3  Mesopatamia - Farm station
120.7  Dunedin TWR - NZ & AN flights can be heard calling
120.9  Christchurch Departures
121.5  International Distress
121.7  Christchurch International Airport Ltd.
121.9  Christchurch Ground
122.5  USAF Operation Deep Freeze
123.45  USN Operation Deep Freeze
124.1  Christchurch Arrivals
124.4  Christchurch Information
127.2  ATIS - Weather
128.0  Queenstown Information - AN & NZ aircraft can be heard calling
128.1  Christchurch Control - West
128.95  All aircraft air to air
129.3  Christchurch Control - South
129.4  Christchurch Control - North
130.2  Ansett NZ Wellington - Aircraft can be heard
130.3  Air New Zealand Operations
131.2  Canterbury Aero Club
131.3  Police ground to Air
131.8  Mount Cook Airlines/Air NZ Link
131.9  Air New Zealand Engineering
132.9  Air New Zealand Ramp
133.0  Mobil Fuel
133.15  Garden City Helicopters
133.55  Gliding
133.7  Shell Fuel
133.75  Ansett NZ Operations
133.8  Canterbury Aviation
133.9  Air BP
134.5  Wigram Traffic
135.1  RNZAF Air Movements
UHF
457.225  Christchurch International Airport - Customer services
457.825  Christchurch International Airport - Crash Fire/security
458.4  Aviation Security Services
461.850  Air New Zealand - Loading Foreman
463.050  Air New Zealand - Control
463.725  Air New Zealand - Ramp
464.325  Air New Zealand - Tarmac Office
485.3  Airport Police

A special thanks to Glen Reid for his list of aircraft frequencies