Continental Electronics 816R - Directional Coupler Function

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Low-Pass

Filter,

A7.

Directional

Coupler,

DC1.

Low

Pass

filter

A7

consists

of

two

coaxial

filters

in

tandem.

The

first

filter

has

a

cutoff

frequency

of

130

MHz,

while

the

second

has

a

cutoff

frequency

of

300

MHz.

The

directional

coupler

provides

a

proportional

de

voltage

to

both

the

forward

and

reflected

circuits

of

A2A6.

The

output

of

each

is

then

routed

to,

and

can

be

displayed

on,

the

Forward/

Reflected

Meter

(A1M4).

Figure

4,

Power

Amplifier

7