10
SKY-SDR USER MANUAL Ver. 1.3.1 - 28-MAR-2017
SIDE PANEL CONNECTIONS
Left Side Panel
KEY:
The SKY-DSR accepts either a
Straight Key or Paddle. Both connect
to the 3-pole, 3.5mm key jack.
MIC:
The SKY-DSR comes with a
condenser (electret) hand Microphone
using a 3.5mm phone jack. To use a
dynamic MIC, you must insert a 330 to
470 nF capacitor in series with the
+MIC line.
PHONE:
The SKY-DSR accepts stereo
headphones with a 3.5mm phone jack.
Any common stereo headphones with
an impedance of 4 to 64 Ohms will
work; the lower the better.
MON / SIDETONE:
Adjust sidetone
volume level (through the hole) with a
tiny screwdriver.
LINE IN/OUT:
Used for connecting to
external sound card interface. See
accessories page for pinout. Audio
level is independent of volume control.
Right Side Panel
DC:
Power is applied through a
2.5mm x 7mm coaxial DC power plug.
ANT:
A female BNC jack accepts
nominal 50 Ohm antennas.
CAT:
CAT control is via a
‘
type A
’
USB2
connection. (FTDI Chip).
PTT:
Push
–
To-Talk, open collector
keying circuit, used to key a linear
amplifier through an RCA phono plug.
(Also called Amp Key). Delay time is
adjustable in the
software menu #4
(CW VOX).
SPKR:
Loud-Speaker, automatically
mutes when you plug headphones into
the phone jack.
