Heathkit HM-213 Assembly Manual page 17

Rf load wattmeter
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Refer to Detail 8B and place a ferrite bead on the end of
each wire as it is installed and then solder each wire to the
foil.
EMA LE
CONNECTOR
2" WHITE
WIRE
Detail 8A
CRIMP AND
SOLDER
Refer to Pictorial 8 for the following steps.
( (Y)
Solder a female connector to one end of the 2" white
wire prepared earlier as shown in Detail 8A. Do not let
the solder flow past the wire end and down inside the
connector.
(
1
1
-
Insert the other end of the white wire into hole K on
the circuit board and solder the wire to the foil.
(
r
Route the cable through the grommet at hole L and
connect the cable to the circuit board in the following
steps.
(
Red to hole F (S-1).
( ) Black to hole G (S-1).
( -)
White to hole C (S-1).
) Solder the shield lead to the ground foil as shown in
Pictorial 8.
(frrfn;ert one end of a 100 pF capacitor into hole A,
position the capacitor 1/2" from the circuit board,
and solder the lead to the foil.
(vi
In a similar manner, connect a 7.7 pF capacitor at hole
B.
( \--)
---
Cut off the excess lead lengths on the foil side of the
circuit board.
Carefully inspect the foil side of the circuit board and
be sure that all connections are soldered and that there
are no solder bridges between foils. NOTE: Some of
the circuit board holes will not be used.
k )
Connect the free end of the black wire from the
negative meter lug to lug 1 of the thermal switch (S-1).
( ) Connect the free end of the red wire from switch B to
lug 2 of the thermal switch (S-1).
(t.Y Remove the shorting wire from the meter terminals.
WIRE
Detail 8B
FERRITE BEAD

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