Metra Electronics DAT Combo Manual de usuario descargar pdf (Pagina 21)

ASK

ME ANOTHER

RADIO-TV

EXPERIMENTER

505

PARK AVENVE

NEW YORK, N.Y.

10022

CW

Monitor

How can

I add a code

monitor to my CW

transmitter?

-C. C.

S.,

Moody AFB, Ga.

While you could

build an audio

tone gen-

erator and

key it simultaneously

with your

transmitter,

you

will not be

actually

monitoring

your transmitted

signal. To do so, all you

need

ANT

2N643

DETECTOR

.001MF

22K

.00!

MF

68K

IOMF

02MF

REGENERATION

CONTROL

9

56K

5K

VOLUME

CONTROL

50

+I

MF

E

AF

AMP

_1001

2N406

1K

-MF

HEADSET

ii..-

9V

is

a

simple regenerative receiver, operated

in an

oscillating

condition, a grid

-dip meter or a

heterodyne

-type frequency

meter, such as the

BC -221

which is

available at

military surplus

outlets.

You can

build

a

monitor using a circuit

such

as

shown

in the diagram. (The coil can

be a

plug

in type so you can change

coils

when

switching

your transmitter from one

band

to

another.)

Just place it

near

the transmitter

and

tune

in its signal,

with

the

key down, until you

hear a

beat note. You

will

then

be

able

to

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23

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