3
4. Solder the red wire in the cable from the MFJ-422B-X to the solder lug
on the dot post of the paddle and the white wire to the solder lug on
the dash post.
5. If battery operation is desired, install a 9V transistor battery in
the battery snap in the MFJ-422B-X and slip the battery into the
battery holder. (NOTE: Long-life Alkaline type batteries are
recommended for the longest uninterrupted operation.)
6. Replace the screw holding the rear rubber foot on the paddle with the
4-40 X 3/8" screw supplied with the MFJ-422B-X.
7. The MFJ-422B-X can now be slid onto the "BENCHER" paddle from the
rear.
Feed the cable through the slot in the bottom right rear of the
box.
Secure the box to the paddle by remounting the rear rubber foot
through the box to the paddle base.
Fold the cable up neatly and
secure with the plastic cable clamp on the bottom of your "BENCHER"
paddle.
TRANSMITTER CONNECTION
(MFJ-422B/422B-X)
1. Provision is made for powering the MFJ-422B/422B-X with external 5-9V
DC supply.
A subminiature POWER jack is located on the rear of the
MFJ-422B/422B-X for this purpose.
An optional AC adapter is available
from the MFJ Enterprises, Inc.
When a plug is inserted into the POWER
jack, the battery is automatically disconnected.
Use an adapter with
a 2.5 mm phone plug with the tip being positive.
2. Connect a shielded cable from the KEYING OUTPUT of the MFJ-422B/422B-X
to your transmitter.
Consult the instructions for your transmitter to
determine whether to use the "Direct" or "Grid block" output jack.
(NOTE: If in doubt as to which jack to use, try both jacks.
If the
transmitter keys continuously when the cable is plugged into one jack,
use the other one.)
OPERATION
After proper connection of the MFJ-422B/422B-X you are ready for
operation. Rotate the VOLUME control clockwise to turn power on as
indicated by the LED light.
Start sending with the paddle and adjust the
VOLUME, SPEED, TONE, and WEIGHT controls to your preference. (NOTE: If a
steady tone at high speed occurs, reduce the WEIGHT or the SPEED by
turning the respective control counter-clockwise.)
The dot and dash memory feature of the Curtis 8044 ABM IC makes
sending easier.
This feature allows keying a dot before completion of a
dash or vice versa.
This feature can be checked by setting the keyer to
the lowest speed and tapping first the dash paddle and then the dot
paddle before of the dash.
The dash memory can be checked in a similar
manner.
The dot insertion feature allows you to tap the dot paddle while
holding in the dash paddle.
A dot will be insert automatically.
The
dash insertion feature allows you to insert a dash while holding in the
dot paddle.
With both paddles squeezed, the IAMBIC operation feature
allows sending of alternate dots and dashes.
First paddle contact
determine whether a dot or a dash occurs first.