Yaesu FT-51R, Technical Supplement

Page: 18 / 83

VHF Alignment
S-Meter Full-Scale Adjust(VHF)
�
,._,c ""
I I
LI.LI LI
D
If you haven't done so already, perform the power­
on key combination previously described then
press @0 �
�
so that the right display blanks.
Next hold for
112
second
(U
blinks),
at the
beginning of each selection.
D Inject a +20dBµ RF signal (±3.SkHz deviation @
1-kHz) to the antenna input, to save the
setting
(Ji)
turns off), then rotate the
DIAL
knob for
the nextsetting.
L ow-Scale S-1 Adjustment(VHF)
�
,__,c ""
I
ill.LILI
(-
'
J .. '
25
D Adjust the generator level to -5dBµ, press and
rotate the
DIAL
for the next setting.
Squelch Preset T hreshold(VHF)
A i if if
..
.
_.,-,, ,. '
I '-·- -
rn1
·�· ""
---
D
Adjust the generator level for a -lldBµ signal,
press and rotate the
DIAL
for the next setting.
Squelch Preset Tight (VHF)
A i if if
• l'-1
Cf.LILI
--c--1
r r
• ••
'.l. _IJ
D
Adjust the generator level for a -5dBµ signal, then
press and rotate the
DIAL
for the next setting.
Tx Deviation (VHF) For A3, B3
&
C3 Versions only.
A if ifif
•
IC
I
LILI.LILI
,,,,,,Tl
llU.JJ
D While tuned to 160.000
MHz
, adjust the AF gener­
ator level for 25 mVrms ®1 kHz to the MIC jack.
D
Hold for 112 second, then key the tx and press
@I 00
to obtain ±4.2 - 4.5 kHz on the deviation
meter (±3.7 - 4.0 kHz for A3 version). Press @0
and rotate the
DIAL
knob for the next setting.
Tx Deviation (VHF)
A i if if
• I '-I
Cf.Lill
'"' n 11 t
L:J
llUJ..1 L
D Tune to 146.000 MHz and adjust the AF generator
for 25 mVrms output@ 1 k!iZ. toJ,h� MIC jac.k. Key
the transmitter and press @/00 to obtam ±4.2
- 4.5 kHz indicated on the deviation meter (±3.7 -
4.0 kHz for Al, A2 & A3 versions). Press @0 and
rotate the
DIAL
knob for the next setting.
UHF Alignment
S-Meter Full-Scale Adjust(UHF)
�
ilil
LI
D
Press @0 �
�
so that the
left
display blanks.
Remember to hold @0 for112 second
(U
blinks),
at
the beginning of each selection.
D
Inject a +20dBµ
RF
signal (±3.SkHz deviation @
1-kHz), to save the entry
(U
stops blink­
ing), then rotate the
DIAL
knob for the next setting.