OPERATION
BF]FORECO\4MENC]NGOPERATION,
CON.
FIRM THAT 'fHÊ POWI]RTRANSFORMER
PRIMARY lIAS BEEN CORRECTLY
WIRED
FOR YOUR LOCAL,{C SUPPLYVOLTAGE,
AND CONFIRM ]'HAT A FUSE OF THE
PROPER
RAI'INCHASBEENINSTALLED.
BE
CERTAIN TIIAT AN ANTENNA IS CON
NECTEDTO TIIE RF OUTJACK.
'Ihc exciternraybetunedup withtheamplilicr
on or off. If you tuneup the exciter
with the
ampliiierturnedon.serrheOPER/STBY
to STBY
duringexcitertuning.
Preset
the FL-21002 controlsandswitchesas
tbllows:
POWERswitch.....OFF
OPER/STBYswitch..SIBY
MbTERswitch.....lP
BANDswitch...
.... Desircd
brnd
PLATEcontrol. ....To the position
shown
tn
TableL
Tunr the FL-21002 POWERswiich ON. and
recheckthe exciier
tu|ing with the OPER/STBY
switch still sci to STBY.Now rotate
the exciter
drive control fully counterclockwise
(mlnlmuÍr
drivelevel).
Setthe
OPI-R/STBY
switchto OPER.
Closethe excite.PTTswitch,endslowly
advance
thc drive controlol-the exciter
until a readingof
0.2 empsis obtained
on the FL-21002 plaie
meter.Tunethe fL-21
002 PLATEcorrtrr,rlibr a
dip (rninimun metcrÍeading)in the plaie
current
indication or thc lneier. Retu|n the exciter to
standby
(release
theP'II'switch).
Placc
the MËTERswitchin the FWD position(to
read rclative Íbrward power). Agah apply drive
froln the exciter.arrcladvancethe SWR SENS
control for a rcading
of rpproximately
I/a
scale.
Now advancc thc LOAD oontrol in sniill incre-
ments,e ch time tuning
the PLATEcontrollot a
maximum
forward
power
reading.^djLrst
theSENS
control, as necessary.to prevent
off-scale
deflec-
tionof theibrward
power
mcter.
DO NOT EXCEED]
OSECONDSOF KEY.DOWN
TIN'IE DURING TUNING, SO AS NOT TO
DAMAGE THE BXCITER OF AMPLI]iIER
FINAL TUBES,
Peak power should occur at a platc current (lP)
reading
of appÍoximately0.5 amperes.Approxi
Inàtesettingsof the I.L-:1002 LOAD control
formàximuIr1outputintoa 50ohmloadareshown
in fable
l.
When
tuning,be certainto startÀtr verylowdrive
level, nd keeptheplate
currcntdipped.Likewise,
do not begin tuning with the LOAD control
advanccdbeyond the 0 point.The corÍecttcch-
nique
isto increasetheexcite.drive
only aftcÍ an
initial dip is obtainedir1the platecLrrfent.With
propef
caretakenin tuning,
your FL-ll00Z will
I'ru!rde
n..ny
yerr.
of .rorrbler'eeoirerJlro,
.
The amplificr is now iuned Íbr SSBandCWopera-
tion. For SSB opetution,the excitershouldbc
adjustedso thrt rhe FL-21002 piate cutrent
indicrtes between 0.2 and 0.3 amperesunder
normal voice operating
conditions.Ilecàuse
the
neter cannot
follow the currentllow correspond-
jng to lhe spcechsignal,the actual
peakcurrent
valueis approximatclytwice the valueshown
on
For AM operation,tune up the FL-21002 as
de cribeJ ibove. Now r.l u.r r're "\circr caríicl
levelfor aplate
cu entindicationo[ 0.2ampswith
u.modulated
carrier-
If an exciter
capableol FM
or FSK
operationisusedwiththe F'L-ll00Z .
do
not exceed
the
fatings
stipulatedfbr AM operation.
For CWoperation,
setthe
dÍivelevelof theexcrter
for a power
inpllt of I kilowatt(e.g-
0.5 amps
at
2000volts
plate
currentunderload).
To measurethe SWR
at the antenne
jack,
setthe
meter switch to FWD (Forward).
arrdapply RF
power. Adjust the SWR SENS control for a full
scalcdcflectionof the SWRmeter.Now set the
METER
switchto REF
(Reflected).
TheSWRmÀy
bereeddirectlyfromtheupper
scaleof themeter.
LOAD control .. Fully counierclockwiseto
number
0-
