Page
66
GROUNDING
A good earth or water pipe ground should be connected to
the ground post on the rear apron of the Amplifier. Use the
heaviest and shortest connection possible.
Before using a water pipe ground, inspect the connections
around your water meter and make sure that no plastic or
rubber hose connections are used which interrupt electrical
continuity to the water supply line. Install a jumper around
any insulating water connectors found. Use heavy copper
wire and pipe clamps.
It
is
best to ground all equipment to
one point at the operating position and then ground this
point as discussed above.
EQUIPMENT INTERCONNECTIONS
Interconnections between this Amplifier and other Heath
equipment are shown in the Figure
2
series of illustrations.
Other makes of equipment will usually follow the same
general pattern.
CABLES FURNISHED
Two phono cables are furnished. These are shielded cables
which have a phono plug molded at each end. Use one cable
to connect the amplifier ALC output to the exciter ALC
input. Use the second cable to connect the amplifier antenna
relay socket to the exciter amenna relay socket.
An RG-58AlU coaxial cable was made up earlier. This cable
is used to connect the exciter RF output to the amplifier RF
input.
Antenna Relay
OPERATION
The antenna relay circuit in the Amplifier must be grounded
in the transmit mode. Heath exciters contain a provision to
accomplish this action. If a relay terminal, or other
switching provision is not available, this function must be'
provided by other means. If a separate coaxial send-receive
relay is used in your station,
it
may have external contacts
available. A separate switch can also be used.
HEATH TRANSCEIVERS WITH 11-PIN POWER PLUGS
If you will use your Amplifier w'h a Heath transceiver
which has an 11-pin power plug on the rear panel, refer to
Pictorial 5 and perform the following steps to accomplish
the Antenna Relay connection.
However, if, you have previously,changed the interior wiring
of the transceiver to use one of the spare phono sockets to
bring out the exterior antenna relay connection, disregard
the following steps and proceed to the "Operations" section.
(
1
Cut off and discard the phono plug from one end only
-
of one of the phono cables furnished.
(
1
Remove
314"
of the gray outer insulation of the cable.
(
1
Unwind the shield wires from the inner insulation.
Then twist the shield wires tightly together and melt
a
small amount of solder on the ends of the wires.
-
(
1
Remove 114" of insulation from the inner conductor,
twist the exposed bare wires tightly,
and
melt am
amount of solder on the wire ends.
(
1
Remove the transceiver power cable socket cap and
slide
it
back on the power cable. Then push the
prepared end of the phono cable through the socket
cap as shown in the Pictorial.
NOTE: When soldering the power socket in the following
steps, be very careful that you do not get the hot soldering
iron against the clear slewing already installed on
the
adjacent lugs.
(
1
Connect the center conductor of the phono cable to
lug 11
6-11,
and the shield wires to lug 5 (S-I
)
of the
power socket.
(
1
Snap the power socket cap back into place.
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