MAXTRAC Series Mobile Accessories MOUNTING HARDWARE Two mounting options are available. Key Lock Mount secures the radio with a twopiece detachable trunnion that locks together. Extra stability mount provides added stability to help protect your radio from high vibration environments. HLN4426A Key Lock Mount, Includes Hardware, VHF/UHF HLN5226B Extra Stability Mount, used with non-locking trunnion HLN5189A Non-locking Trunnion (for 820/840 Series only) HLN9450A Floor Mount, 45 /60 Wedge (for 100/300 model only) HLN9404A Installation Sleeve Mounting Hardware (for 35 and 60 watt) HLN9457A Accessory ...