Controls And Switches - Yaesu FT-902DM Instruction Manual

This transceiver has been specifically designed for
e ase o f operation and versatility . Th e operator
may , h owever, be un f amiliar with the operation
of the controls, an d improper adjustment there o f
may re sul t in poor transceiver p erforman c e . Thus,
(l) MODE
T he M O D E switch has six p ositions for selection
of the operating mode desired :
FSK, AM, FM.
o r
REJECT-WIDTH
(2)
The REJECT
and WI DT H c on trols a re m oun ted
o n c on cen t r i c sh a fts. Th e rej e c t i o n tun in g c o n tro l
(REJECT).
wh en a c t i vated
s i l v er pu shbu t t on to t he l e ft o f t h e
k nob. pr ov ides a va ria b l e
for
out a
n u l l i n g par t i cular i n t e r f eri ng s i gn a l .
T h e WI DTH control varies t h e signal across t h e
passband o f o n e o f t h e t wo
pass filters u sed i n this circuit, thus p roviding a
IF
variable b andwidth for rejection o f signal s above
or belo w t h e desired signal.
(3)
M
M
The b u t t on is p ressed to store a fr e quency in
the m e m ory circuitry . Whate v e r frequency i s
b e ing read out on the digital d isplay will b e the
frequency s tored when the M bu tton is pushe d .

CONTROLS AND SWITCHES

LSB, USB ,
CW ,
by
press i n g the sm a l l
REJECT
IF
n o tch fi l ter a c ti on
IF
8-p ole crystal band­
-5-
be certain t h a t y ou understan d t h e fun ction o f
every control b e fore operating t h e transceiver.
The various fron t p anel con trols and switches
are described in the following section .
@-(])
( 4 ) EXT
When pushed , the EXT button transfers frequency
FT-902D M
c ontrol from the
F V -901 DM
su ch as the
VFO.
( 5 ) VFO
VFO
When the. b u t to n is p u shed , frequency c on­
trol is transfered fro m EXT or memory c ontrol to
the FT-902D M i n tern al
(6) TX-MR-RX
Once a frequency h as b een stored by the m e m ory
(M)
button, that frequency may be re call e d for
control of either t h e transmit or receive frequency
by pushing e i th e r the TX or RX
re spectively .
(7) M R
Once a frequency h as b een stored by t h e m e mory
(M) bu tton, that frequency may be recall e d for
control of the transceive freque ncy by pushing
MR
the button .
t o an external VFO,
fully syn thesized scan ning
VFO.
MR
b u t ton ,