phone PTT switch when microphone is
attached to the transceiver.
SSB OPERATION
After completion of tuning, set MODE switch to
LSB or USB. Set the METER switch to ALC posi
tion. Set the "FUNCTION SWITCH" to the PTT
position and advance the MIC GAIN control until
the meter kicks down to midscale of green colored
portion when speaking normally into the micro
phone .
Set the "FUNCTION SWITCH" to VOX position.
For VOX operation , adjust VOX GAIN potentio
meter under the top cover until voice actuates the
transceiver. Set the ANTITRIP potentiometer to
the minimum point to prevent the speaker output
from tripping the VOX. Do not use more VOX
gain or ANTITRIP gain than necessary . Adjust the
DELAY potentiometer under the top cover for
suitable release time.
l\IOTE
:
W hen meter is set to
IC.
voice modulation
pl'ak s w i l l ind icate
l:=i0-200
mA. A ctual peak
curren t. howl'vl'r. is approx imately
2
timl's
the indicated va l u e.
CAUTION
CARE must be taken to avoid an excessive
drive to prevent spurious radiation. Maximum
key down current should be kept within 330
mA for the bands under 15 meter and 280 mA
for 10 meter band.
VOICE OPERATION WITH RF PROCESSOR
The FT-101E Speech Processor, when properly
adjusted, is designed to improve the intelligibility
threshold at the receiving end with RF clipping.
This li.ighly clipped IF signal is filtered to remove
RF harmonics and out of band intermodulation
products.
The distortion ·produced by RF envelope clipping
and filtering is less objectionable than that caused
by an equivalent amount of audio clipping.
It should be noted that the RF Speech Processor
does not increase maximum power output but
clipps maximum peak to increase the output of
low level signal as illustrated in Fig. 2 , and the
improvement of an RF Speech Processed Signal is
most noticeable when the SSB signal is weak at a
distant receiver.
With the PROCESS switch OFF, se t the METER
switch to ALC position. Normally speaking into
the microphone , set the MIC GAIN control to the
level where the meter indication stays in green
portion of the meter scale. Set the PROCESS
switch ON and adjust the LEVEL ( processor
11
output level ) control to the pos1t1on where the
ALC indication stays in the green portion.
Optimum setting of the MIC GAIN and LEVEL
controls may need observation of the transmitted
signal by the scope.
Fig. I
Fig. 1 RF Processor OFF
CW OPERATION
Fig.2
Fig. 2 RF Processor ON
Upon completion final tun ing, in sl'rt key plug i n jack
m arkl'd
. .
KEY
. .
on rear apron of the t ranscei v er. Power
output from the tra n s m i tter is determined by the
. .
CARRIER
.
.
cont rol arm position. The operator may
select any power out put desi red by sim ply rotating
the
. .
CAR RIER
. .
contro l w i t h i n the l i m i ts o f its range
from zero to ten.
The transceiver may be operated m anually or
break-in by setting the "FUNCTION SWITCH" to
either MOX (manual) or VOX (break-in) for the
desired mode of operation.
NOTE
:
Insert ion of the ke\· plug automatica l l y d is
connects t he bias supply to the PA tu bes.
therefore. w ith t h e key plug i nserted Final
A m pl i fier bias current will not bt• indi cated
w hen meter is in the
IC
posit ion.
AM OPERATION
AM
operation of the transceinr is acco m pl ished by
sett ing the
MODE
sw itch to the
AM
position and
insert i ng the proper amount of
. .
CARRIER"
w ith the
. .
C A R RIER"
cont ro l .
A fter completion basic transmitter tune- u p. place the
MODE
switch in the
AM
position and rotate
. .
C ARRIER
.
.
control arm unt i l meter rl'ads
.l:=i (]:=i()
m A ) i n the
IC
position. W h i l e spea k i ng i n to the m icrophone norma l l y .
increase
MIC GAIN
un til the m eter i n d icates very
sl ight movement w i t h mice peaks.
C are m u st bl' taken in adjusti ng
MIC GAIN
control
to assure that the
..
CARRIER
..
co11t rol arm is not
rotated causing an increase in
"C ARRIER
..
level. Do
not l'xceed
.Fi
(150 .11..\)
m eter ind ication duri ng
Al\!
operation or dest ruction o f the Final A m pl i fier tubl's
may resul t.
CAUTION
On the 160 meter band, maximum plate current
should be
�
ept within 140mA to avoid spurious
radiation when it is operated on the frequen
cies between 1820
KHz
and 1900
KHz.
