4SQRP Bayou Jumper 40 Meter CW Transceiver, Руководство по сборке и инструкция

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revised 3 Feb 2021 Bayou Jumper revB Assembly Manual page 19 of 46
Mating the front panel with the main PC board
□
Place the front panel onto the standoffs. Secure it temporarily with two or
three screws and check the motion of the pots. If they do not turn freely, re-heat
the mounting lug(s), and adjust the angle(s) slightly as needed.
□
Remove the front panel temporarily. Then insert the power jack, key jack,
and headphone jack into the front panel, and tighten their nuts. Insert the wires
from the headphone connector and the key jack though the appropriate holes in
the board as you bring the boards together. Insert the red wire from the power
jack into the square ‘
+12 V
’ pad on the PC board, and the black wire into the
round ‘ — ’ pad on the PC board. Also plug in the two wires from the LED. Plug
them into the header pins marked J7-7 and J7-9.
□
Finish attaching the front panel using the rest of the six 6-
32 x 3/8” screws.
Gently pull the bus wires from the headphone and key jacks snug, and solder
them into place on the circuit board. Solder the two wires from the power jack as
well.
Inspect the power jack lugs and wire leads to be sure there are no
accidental short circuits.
□
If the crystal pins are not centered under the front panel holes, re-heat the
solder and reposition them. Push two plastic insulating sleeves into the crystal
socket holes in the front panel, pressing them down over the crystal socket pins.
□
Install the five knobs. Be sure the round knobs are positioned so that the set
screws bear upon the flatted portions of the shafts. The knob indicators should
line up with the markings on the panel. The rotary switch has no flat. Adjust its
knob so that it lines up with the three positions marked on the panel. See
Appendix C for some additional comments about the main tuning knob.
□
Install the ½” male-female threaded
standoff on the top of the front panel near
the BNC jack. The standoff replaces the
supplied
3/8” 6-32 screw that is normally
inserted there.
Use the 3/16” 6-32 screw
on top of the standoff so that the phillips
screw head provides
a “landing pad” for the crystal pin.