Yaesu FT-101ZD Instruction Manual page 18

F IXED CHANNEL C RY ST AL INFO RMATION
Two fixed channels may be used with your FT-
10 1 ZD, using optional crystals.
available from your Yaesu dealer. Cryst als must
meet the specifications shown in Tab le
must fall within the operating range 5 500 - 5000
kHz. Frequen cy calculation is m ade from the
formula
F F - F
=
x
1
where F x is the crystal frequen cy
F is a constant derived from Table 1
1
F 0 is the operating frequency .
For example , let us say it is desired t o operate on
7 19 9 kHz LSB. Referring to 11abl e 1 , we see than
for 4 0 m eter LSB , F is 1 2 5 0 1 . 5 kHz. Subtracting
1
F (7 1 9 9 kHz) from F
0
530 2 . 5 kHz, the cry stal frequency (F x ) .
For operation on 2 1 4 20 kHz U S B , compute the
crystal frequen cy as follows :
F x 2649 8 .5 - 2 1 4 20
=
Inspe ction of the values of F
reveal that the 7199 kHz crystal for LSB will work
on 1 419 9 kHz , 21199 kHz, etc. Of course , LSB is
not norm ally used on these bands. If the operator
swit ches to USB, the operating frequency will be
moved 3 kHz (in this case, t o 1 4 19 6 kHz , 2 1 19 6
kHz , et c . ) . I f t h e move is m ade from L S B to CW,
the frequen cy will move 2 . 3 kHz down .
Crystals are
2
and
,
0
(12 5 01. 5 kHz) yields
1
5 07 8 . 5 kHz.
=
in Table 2 will
1
U S B
6 9 9 8 . 5
1 6 0 m
8 0 m 8 99 8.5
4 0 m 1 2 49 8 . 5
2 0 m 1 9 49 8 . 5
1 5 m 2 6 4 9 8 . 5
l O m A 3 3 49 8 . 5
l O m B 3 3 9 9 8 . 5
l O m C 3 4 4 9 8 . 5
l O m D 3 4 9 9 8 . 5
Ty p e
Load Ca p acitance
Series Resistance
Static Ca p acitance
Drive Level
-1 6 -
c w
L S B
7 00 1 . 5 6 9 9 9 .2
9 0 0 1 . 5 8 9 9 9. 2
1 2 50 1 . 5 1 2 49 9. 2
1 9 50 1 . 5
1 9 4 9 9 . 2
26 50 1 . 5 2 6 4 9 9 .2
3 3 5 0 1 . 5 3 3 4 9 9 . 2
3 4 0 0 1 . 5
3 3 9 9 9. 2
3 4 5 0 1 . 5 3 4 4 9 9 .2
3 5 0 0 1 . 5 3 4 9 9 9 .2
Table 1
HC-25/U
30 p F
25 Ohms or less
7 p F or less
5mW
2
Table