Simplex Repeater Controller (190-0345) Hints and Tips Faxback Doc. # 50651 CTCSS decode/encode should be enabled on the repeater's radio and each radio using the repeater to prevent interference from other users on the same frequency. Hearing your own repeated signal confirms that the repeater heard and resent your signal. If your own signal is broken up in the repeater, find a better spot or increase your antenna height, then try again. Although the repeater's batteries last a long time, the radio's will not. They usually require daily recharging. Adding a trickle charger across the battery terminals (or powering the radio from a regulated DC supply) lets you set up permanent installations. A permanent installation could be the indoor windowsill of a high-rise office or apartment building. It could be a handheld with an external antenna that's connected to the repeater. A temporary location could be a tall tree at a field day site (pulled up by a rope and protected by a zip-lock-type bag in case of rain). The repeater records for up to 30 seconds, but this is much more than you need. Keep your transmissions short, so you don't have to wait long for each transmission to be repeated. (EB 11/13/98)