Heathkit HD-10 - Page 34

TO TRANSMITTER KEY JACK
TO EXTERNAL PADDLE
ALTERNATE USE WITH HAND KEY ALTERNATE USE WITH EXTERNAL PADDLE
Figure 3 Figure 4
TO TRANSMITTER
ALTERNATE HAND KEY
& KEY JACK
Figure 3 shows a hand key connected between
the
GND and HANU KEY screws. This allows
the operator
to use either the hand key or the
Electronic Keyer at his
own discretion.
EXTERNALPADDLE
An external paddle may be connected to the
GND, DOT, and DASH terminals of the Elec-
tronic Keyer. This will permit the use of either
the external connected paddle or the Electronic
Keyer without any interaction. See Figure
4. The
external paddle may be of
a type that will allow
simultaneous operation of two separatepaddles.
I
MITTER OR HEADPHONES
SIDETONE
Figure 5 shows the Electronic Keyer used with
a transmitter having a built-in sidetone, suchas
the Heathkit SB-400. The receiver speaker or
head~hones connected to the receiver mav be
used to reproduce the transmitted and received
signals. The Volume control on the Electronic
USE
Keyer should be turned fully counterclockwise.
SIDETONE
Figure 5