Check that radio is suitable and approved for mobile installation. Read the installation instructions for the radio. Vehicle manufacturer or agent. Radio manufacturer or agent. ` VEHICLE Some vehicles require special attention. These notes are written for petrol/diesel engined cars, vans etc. with 12 volt battery supplies. Other types of vehicles may be subject to special regulations. If in doubt, please contact either the vehicle or radio distributor for further information. Be sure that the installation can be made safely, such as no petrol leaks etc. Modern vehicles are using more and more non-metallic materials in their construction. Some panels (interior and exterior) may be made from plastic or reinforced resin etc. Such panels do not have the same shielding properties as metal and this may cause unexpected effect with RF such as VSWR, RF immunity. A qualified radio installation engineer should be able to give you advice on suitable products that can be used to "screen" such non-metallic panels if required. ` POSITION Checklist of points to decide before starting: i) Is there a suitable position to mount the radio? ii) Will you use a fist mic or a "hands-free" installation? iii) Can you route all cables so that they will not interfere with any controls of the vehicle? Fist mic cables are especially important here. iv) Make sure that it is possible to securely mount the radio. v) Will the position of the radio be quite safe for you and your passengers? vi) Will the position of the radio obstruct any safety device of the vehicle? vii) Don't forget that transceivers can become quite hot in transmit mode, the ventilation should not be obstructed. viii) Don't mount the transceiver, antenna or accessories where they can obstruct the driver's view...