AR2700 operating manual
13
When correctly activated and BEEP enabled, a high pitch bleep will confirm
operation.
To switch the receiver Off simply press and hold the key again for more than
1.5 seconds. If the BEEP is enabled and you press the key for too short a
period, a low pitch beep advises of the error.
The [PWR] switch is not of a common volume control combined arrangement
as a SLEEP timer can also switch the receiver Off when programmed and
activated. Resetting the microprocessor from the external reset switch will also
cause the receiver to power On.
The K.LOCK (key lock) switch located on the left side panel prevents
accidental switch On and Off of the receiver. This is an extremely useful
feature when carrying the set in a coat pocket or bag.
Note: It is quite normal for a click to be heard as the receiver is powered On
and often the lamp will momentarily illuminate. A low level hiss may also be
heard from the speaker when in quiet surroundings, this is because the audio
amplifier is permanently powered in order to provide fast scan & search rates
and to facilitate a good squelch characteristic. The set may switch On when
changing batteries or when connecting external power to the receiver, this is
normal and you should be aware of and check for this condition.
[SRCH] [S.PROG] - search & search program key
When the [SRCH] key is first pressed the receiver initiates a the
search process for one of the programmed search banks. The bank
currently being searched is indicated by the legends “BANK 1” for example in
the top left hand corner of the LCD and the word “SEARCH” in the centre of
the top row of the LCD.
If no data is stored in the program search banks, the set will not be able to
search.
When [SRCH] is pressed a second time during search, the SEARCH process
is cancelled and the current search frequency is transferred to the VFO
returning the receiver to MANUAL mode where the frequency may be
monitored or used as the starting point for tuning. As the search process is
terminated you may also decide to write the frequency into a memory channel
or resume searching again. To return from SEARCH to MANUAL mode and
receive the original frequency without transferring the search frequency press
[MANU].
The key sequence [2ndF] [SRCH] (short press of the [SRCH] key) initiates the
process for programming the search banks to your own specification of
frequency range, step size, attenuator and mode... this is referred to as
PROGRAM SEARCH input.
The key sequence [2ndF] [SRCH] (long press of the [SRCH] key for more than
1.5 seconds) initiates the process for linking search banks together.