Albrecht AE7500 Guide D'utilisation page 24

(12) CHAN (channel selector)
(13) METER
The lower scale indicates the received signal strength in S-units, while the upper
scale indicates the RF output power in Watts during transmitting.
(14) CH 9/19 Direct Access
(15) FUNCTION
This key is used to operate the functions that are printed below the control keys.
Press and release, FUNC will be displayed on the LCD indicating that the function
command is activated. After a second key is pressed or if no other key is pressed
within 3 seconds the FUNC will disappear from the screen.
(16) SCAN, second function MENU
(17) MEMORY LOAD, second function MEMORY
(18) MONI
(19) STEP, second function NB
(20) LAST CHANNEL RECALL, second function ECHO
(21) MODE (AM, FM, USB, or LSB), second function DW
(22) DISPLAY
MICROPHONE INPUT SOCKET (not shown)
6-pin, lock ring type, microphone connector located on side chassis of transceiver.
Microphone wiring is as follows:
The following sockets are located on the back panel of the radio
EXTERNAL SPEAKER SOCKET (not shown)
External speaker socket, marked EXP SP. For use with 4 to 8 ohm external speaker.
PA Speaker Socket (not shown)
PA speaker socket, marked PA. By connecting an external loudspeaker with this
socket, the A7500 can be used as an audio amplifier. For connection a 3.5mm Mono
plug is needed.
The following controls are found on the microphone
PUSH-TO-TALK (PTT) key
Located at the side of the microphone
24
Pin 1 : Microphone Audio
Pin 2 : Receive
Pin 3 : Transmit
Pin 4 : Down (Up w/ 22K Ohm Resistor)
Pin 5 : Ground
Pin 6 : +13.8 VDC
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