So into it again. I would like to talk a bit about cross band operations. Basically, this is a feature in a lot of mobile rigs which allows you to extend the range of your hand held unit. You set up a mobile or fixed station to take an incoming signal on one frequency and re transmit the signal on another frequency. Here is an example: you are performing communications for a public event and you cannot reach a repeater with your HT. Your radio in your car, on the other hand, can easily communicate with the repeater of your choice. If the rig is capable, you can set it up for cross band. You would transmit on a simplex frequency on your HT and the mobile rig would take that signal and re transmit it on the input frequency of the repeater. When the repeater transmits, your mobile rig would re transmit that signal onto the simplex frequency that your HT is set on. This allows you to be away from your car if needed and still be in communication with the people you need to talk to (usually a command center or net control station). One thing they caution you about is not to cross band two repeaters as this would cause a loop which could lock up all radios involved. Not cool and potentially harmful to to all radios involved. You should also be aware that your radio doing the cross band is operating at 100% duty cycle and could over heat if not given a rest now and then.