5
HOOK-UP INSTRUCTIONS
1. POWER
BT-1
To perform the Check-Out Procedure in the following section and familiarize yourself
with the BT-1, it is first necessary to apply 13 volts ± 3 volts to the power input jack on the rear
panel of the BT-1. (For the BT-1P. see next paragraph.)
This may most easily be accomplished by connecting the output cord attached to the optional AEA
model AC-1 or AC-2 wall adaptor power supply to the power socket on the rear panel of the BT-1.
If you are using another 12 VDC power supply or lantern battery be sure to connect the center lead
of a mating power plug to + 12 volts, and the outer conductor to common. The external power
source must be reasonably well filtered and capable of supplying at least 200 mA. The BT-1 may
be used in an automobile with the optional AEA DC-1 cigarette lighter power cord.
BT-1P
It is very important to take proper care of your expensive NICAD battery pack which
is part of your BT-1P. The unit should arrive in a discharged condition.
IMPORTANT: USE ONLY THE CHARGER THAT COMES WITH THE BT-P1 TO CHARGE THE
BT-1P. A constant voltage supply WILL DO DAMAGE to your NICAD batteries and they WILL NOT
BE COVERED UNDER WARRANTY.
Upon initial receipt of your BT-1P, plug the wall charger into a 117 VAC outlet and the output cord
into the BT-1P power input connector. With the BT-1P power switch in the OFF position, allow the
batteries to charge a few minutes. Now turn the unit on an press any button (with the volume
nearly fully advanced clockwise), and note that you get some tones. Now, turn the power switch off
and allow the BT-1P to charge uninterrupted for 14 hours. (The BT-1P is supposed to be charged
with the power switch OFF but with the wall charger plugged in.)
For longest battery life, it is IMPORTANT that you exercise your batteries. After you have fully
charged the batteries, use the BT-1P without ever connecting the wall charger again until you have
fully discharged the batteries. Then you should give a full 14 hours charge before starting to use
the BT-1P again. Then begin the discharge cycle all over again.
2. HAND KEY
The BT-1 and BT-1P can also double as a code sending practice oscillator. All you need to do is
plug a standard 1/4 inch phone plug connected across a telegraph key into the key input jack on
the rear panel. It is not important which side of the key goes to which terminal of the 1/4 inch
phone plug.
To activate the code practice oscillator tone, simply press
*5
on the top panel keypad.
3. EARPHONE
The BT-1 and BT-1P also provide a rear panel jack for earphone monitoring. Upon insertion of
the earphone plug into the jack, the internal speaker is automatically defeated for private listening.
