Becker AR 4201 - Operation of Intercom Mode; Audio Auxiliary Input

(2) Ope ra te the trans mit but ton and call the ground sta ti on. Hold the mi cro-
pho ne clo se to the lips for op ti mum speech trans mis si on.
NOTE : The ar row in the top line of the dis play in di ca tes trans mit
mode. Du ring trans mis si on a pro tec ti ve cir cuit pre vents a
fre quen cy chan ge or fre quen cy chan nel chan ge even if the
fre quen cy se lec tor switch is ro ta ted. The key ing functions
on the con trol pa nel are also in hi bi ted.
(3) Set the cor rect re cep ti on vo lu me using the VOL con trol whilst the ground
sta ti on is ans we ring.
(4) Switch on the squelch (press SQL key again). Weak re cep ti on
sig nals and re cep ti on noi ses are sup pres sed. The switch-on thres hold of
the squelch can be set in the ser vi ce mode.
NOTE : When chan ging the mode or the fre quen cies
(PRESET- AC TI VE fre quen cy) the chan ge is au to ma ti cal ly
sto red 2 se cond af ter the last chan ge took pla ce. Due to
this de lay chan ges which were made im me di ate ly be fo re
swit ching off the trans cei ver will not be me mo ri zed. Ex ce pe-
ti ti on: Me mo ry ac tions as sto ra ge by pres sing the STO key.
C. Ope ra ti on of in ter com mode
(1) Switch on the IC switch (ex ter nal).
(2) Ope ra te the in ter com mu ni ca ti on (IC).
(3) If ne ces sa ry, the IC vo lu me can be ad jus ted to the noi se le vel of the air-
craft (for ad just ment re fer to ser vi ce mode).
D. Au dio au xi lia ry in put
A se cond and third ra dio unit (na vi ga ti on re cei ver) can be mo ni to red si mul ta ne -
ous ly via the au dio au xi lia ry in put. Du ring trans mis si on the au xi lia ry in put is
swit ched off from the au dio end am pli fier. If ne ces sa ry, the in put sen si ti vi ty
can be mat ched to the noi se le vel of the air craft (for set ting re fer to ser vi ce
mode).
IN STAL LA TI ON AND OPE RA TI ON
AR 4201 - ( )
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23-10-01 De cem ber 15/98