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the  antenna  and  power  source  are  con­
nected.  If  y ou  hâve  not already  done  so,

 

plug in  the microphone.

RECEIVING

1.  Rotate  the  Squelch  control  4)  to

 

about  9  o ’clock position  initially.

2.  Select  the  AM  or  FM  mode  by  the

 

AM-FM switch  7),  as y ou  desire.

3.  Select  desired  chnnel  by  both  the  Hi-

 

Lo  Band  switch  2)  and  the  Channel

 

selector  switch  5)  as  indicated  by  the

 

LED digital readout.

4.  Set  the  NB  +  ANL  Switch  8)  to  the

 

OFF  position  initially.

5.  Rotate  the  RF  Gain  control  2)  to

 

maximum  [fully  clockwise].

6.  Rotate  the  Volume/On-Off  control  3)

 

clockwise  to  apply  power to  the  trans-

 

ceiver.

Since  the  transceiver  is  fully  transistor-

 

ized,  operation  will be instantaneous.

 

Continue  rotating  the  Volume/On-Off

 

control  clockwise  to  provide  a  com-

 

fortable listening level.

TRANSMITTING

WARNING: 

NEVER  ATTEMPT  TO

TRANSMIT  WITHOUT  AN  ANTENNA

 

OR  LO AD.
Tо  transmit,  simply  depress  the  push-to-

talk  bar  on  the  microphone.  The  TX  In-

 

dicator  Light  6)  will  corne  on  as  y ou

 

depress  the  push-to-talk  bar. 

Hold  the

 

microphone  3  to  4  inches  from  the

 

mouth  and slightly  to  one side  so  that the

 

voice  does  not  project  directly  into  the

 

microphone.  Speak  at  a  normal  level  —

 

there  is  no  need  to  shout.  A  designed

 

feature  of  this  transceiver  is  that  high

 

average  modulation  can  be  achieved

 

easily  at normal voice levels.

PA [PUBLIC ADDRESS]

OPERATION

For  PA  operation,  y ou  should  use  an  ex-

 

ternal  8  to  16  ohm  speaker  connected  to

 

the  “PA”  jack  [located  at  the  rear of the

 

transceiver]  .  The  recommended  plug for

 

the  “PA”  jack  is  a  subminiature  phone

 

plug. 

To  set  the  transceiver  to  the  PA

 

mode,  set  the  Squelch  control  to  the füll

 

counter-clockwise  position  (past  click),

 

then  press  the  push-to-talk  bar  on  the

 

microphone  and  talk  into  it — your voice

 

will be  hear  through  the  PA speaker.
Tо  reduce  acoustic  feedback when  the  PA

 

speaker  is mounted  on  a car or truck, y ou

 

may hâve  to  close  the vehicle Windows,  or

 

reduce  the  volume  as  necessary  to  stop

 

any feedback  that may  occur.

7

Содержание M580

Страница 1: ...INSTRUCTION MANUAL...

Страница 2: ...ontrol push pull band switch Hi Lo Built in ceramic filter helps prevent adjacent channel interf rence Built in automatic modulation control circuit Provision for PA operation with volume control Exte...

Страница 3: ...ONE JACK 4 Pin socket for push to talk micro phone supplied 2 RF GAIN HI LO BAND SWITCH RF Gain This control should normally be set to maximum fully clockwise If a storong station blast in and sound d...

Страница 4: ...ckwise position past click the transceiver is converted into PA Public Address mode 5 CHANNEL SELECTOR SWITCH Rotary switch selects one of 40 channels for both the high band and low band Channels 1 th...

Страница 5: ...cable RG 58 U or RG 8 U with matching PL 259 type coaxial connector MOBILE INSTALLATION TRANSCEIVER MOUNTING Before installing the transceiver in a car truck boat etc be sure to choose a location whic...

Страница 6: ...e greatly determined by the efficiency of the antenna system used Due to the complexity of the subject it is not within the scope of this manua to OPERATION INSTRUCTIONS Make sure the transceiver is p...

Страница 7: ...to talk bar on the microphone The TX In dicator Light 6 will corne on as you depress the push to talk bar Hold the microphone 3 to 4 inches from the mouth and slightly to one side so that the voice d...

Страница 8: ...5 65 27 695 6 27 025 26 27 265 46 27 475 66 27 715 7 27 035 27 27 275 47 27 485 67 27 725 8 27 055 28 27 285 48 27 505 68 27 735 9 27 065 29 27 295 49 27 515 69 27 745 10 27 075 30 27 305 50 27 525 70...

Страница 9: ...SCHEMATIC FRONT PANEL...

Страница 10: ...MAJOR ACOUSTICS CORPORATION XX4A12...

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