Tuning Knob Torque Adjustment - Yaesu FT-890 Operating Manual

Transmiff ing
Operation
other). The special case of split-frequency FM
repeater operation uses some features of its own,
as described in the box on the previous page.
Also, if the difference in transmit and receive
frequencies is less than 10 kHz, using the clarifier
function is likely to be the easiest approach.
Use the NB, A=B,
SPLIT
and
M-VFO
buttons at
the right end of the display to set up the two
VFOs:
0 NB toggles operation between the two VFOs,
without affecting the contents of either.
0 A=B copies the contents of the currently dis-
played VFO (A or B) to the other (B or A,
respectively), overwriting the contents of the
non-displayed VFO.
0
SPLIT
toggles the "hidden" VFO for transmis-
sion.
0
M
-
VFO
copies the pair of frequencies stored
in a memory into the VFOs (by pressing it for
'h second). This is described in the next sec-
tion on memory storage and recall.
For split operation, you need to first load the
VFOs with the desired transmit and receive fre-
quencies and modes. Set your mode and fre-
quency for transmission, then press AIB and set
your mode and frequency for reception. You can
use the AIB button to check your transmit fre-
quency while receiving (to avoid transmitting
unnecessarily). Once the two VFOs are set up,
just press the
SPLIT
button.
"SPLIT"
appears in a
box at the left edge of the display, and when you
transmit, the display frequency shifts to the
other VFO (and mode button indicator, if differ-
ent). The contents of both VFOs can be stored in
a memory for future operation with the same
frequency pair, as described next.
Tuning Knob Torque Adjustment
If the tuning knob is too tight or too loose for just enough to allow the knob to be pulled
your preference, and if you have a 2-mm (%nu) off the shaft.
Allen wrench, you can adjust the torque.
0 Turn the exposed shaft tension spring coun-
0 Pull the knurled rubber ring off of the tun-
terclockwise to loosen the torque, or clock-
ing knob. wise to tighten.
0 Locate the hole in the edge of the tuning
0 Replace the knob, tighten the setscrew, and
knob, and use the Allen wrench to loosen
replace the rubber ring.
the setscrew accessible through the hole,
page 22