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==CONTROLS==Firstly a description of the various switches and keys.TOP PANEL.*VOLUME Controls the volume and is also the Oil/offswitch.*SQUELCH Mutes the background noise, which,particularly in the FM mode, tends to be mostobjectionable. Note that in order for theAR9ooUK to scan or search, it is essential touse the squelch control. The best position forthis control is when the noise is just, but only just, . muted, otherwise sensitivity suffersslightly.*KEY This disables the keyboard to preventLOCK accidental errors.*LAMP This illuminates the diSplay, but also rapidlydischarges the battery.FRONT PANEL*SEARCH In the search mode, it initiates the search.*SEARCH In the search mode it is used to programme*PROGM the upper and lower limits of the search.*SCAN In the scan mode it initiates the scan.*PRY This is a dual function key. used in the search*LL/UL mode to set lower (LL) or upper (UL) limitsto the search. The other function is, in the.scan mode, to make memory Ao1 :1 prioritychannel. Every 7 seconds or so Ao1 isexamined and if a signal is present that signaltakes priority over all others.*MANUAL The key which enables frequencies to beentered and permits manual examination ofthe memories.*LOCKOUT This is a dual function key which stops the*[INC reception of unwanted signals in the scan or manual.,modes. It also selects the frequency steps in the search mode.*DELAY This is a dual function key. The delay function*HOLD operates in both the scan and search mode tohold the frequency of a received signal foraboutWS seconds after the transmission hasended; The hold facility operates in the searchmode only and holds the signal frequency aslong as desired. This gives the user a chance to