Fairhaven RD500, Руководство пользователя, Страница: 8 / 31

4.
Using the receiver’s controls.
The design of the receiver allows easy access to most functions without having to use
a lot of menus. There now follows a more detailed description of all the facilities,
starting with key 1.
4.1
Auxiliary menu
<SHIFT><1>
Pressing SHIFT-1 reveals the auxiliary settings menu, individual functions can be
selected by pressing the corresponding number, active functions are indicated with
square brackets.
The auxiliary settings can be individually specified for each
memory, band or VFO, except for AMP and ATT settings which are set
universally.
1 [ATT] 2 AMP 3 CAS
4 LPF 5 [AVC] 6 MORE
ATT (Attenuator)
Aux Key 1.
Inserts a 20dB attenuator into the main HF aerial path to reduce the receiver’s
sensitivity when the receiver is likely to be overloaded by strong signals.
AMP (HF Aerial amplifier).
Aux Key 2.
This control connects the HF aerial amplifier, and its associated selector switch, (on
the back panel) into the aerial path. The high impedance (HI-Z) whip aerial input is
designed to give extra sensitivity for short HF aerials, although it does not have the
large signal handling ability of the main antenna input. The AMP facility also provides
gain to the MAIN aerial input when selected on the rear panel, but should be used with
caution as it can degrade the wanted signal due to overloading from other, off-channel
signals.
CAS (cassette control)
Aux Key 3.
This key switches on the cassette recorder which can be connected to the Din socket
marked CASSETTE. The cassette is activated when CAS is selected and the squelch is
raised. The socket can be configured to provide a 12 volt output that is switched by the
squelch. See appendix for connection details.
LPF (treble cut low pass filter)
Aux Key 4.