50
under the nuts. There is a slight bit of wiggle room in the mounting holes, so use it to line
up the connectors so their sides are parallel to one another.
(2) Mount four 4-40 x 1/4” threaded standoffs on the corner holes of the inside top cover,
as shown above. Use 4-40 x 3/16” machine screws, with internal lockwashers under the
standoffs (i.e., between the standoffs and the enclosure, not under the screw heads.)
(3) Identify the RF relay circuit board and collect the components that mount on the
board, listed below. If necessary, refer to the master parts list for more details about each
component.
RF Relay Circuit Board Components
J501
Connector
RJ-45 8 pin, top entry, shielded, PCB jack, qty 1
K501-K510
Relay
Tyco/Schrack RTB14012F SPDT 12A, qty 10
C501-C507
0.01
µ
F
Capacitor 50V blue epoxy-dipped ceramic, qty 7
C508
0.1
µ
F
Capacitor 50V blue epoxy-dipped ceramic, qty 1
D501-D507
1N914A
Si gen. purpose signal diode, qty 7
RF Relay Circuit Board (Top View)
(4) Plug J501, the 8-pin RJ-45 connector, into its holes on the rear side of the circuit
board, but do not solder the pins yet
.
