Installation manual
DRAKE
4-Pin Round Mic Connector - TGR-SL-CAB4R
Radio Models
Pin-out
Notes
JP-1
TR-7
TR-22
TR-33
UV-3
Pin 1 – Mic Input
Pin 2 – PTT
Pin 3 – N/C
Pin 4 – GND
ELECRAFT
8-Pin Round Mic Connector - TGR-SL-CAB8R
Radio Models
Pin-out
Notes
JP-1
K2
K3
Pin 1 - Mic
Pin 2 - PTT
Pin 3 - NC
Pin 4 - NC
Pin 5 - NC
Pin 6 - +5VDC
Pin 7 - GND
Pin 8 - GND
The Mic jack on the K2 can be wired a number of
different ways, so before installing the jumper wires,
you MUST verify that the pin-out of your K2 matches
that shown here.
ELECRAFT
Rear Panel Audio In, Audio Out and PTT connectors - TGR-SL-CABK3
Radio Models
Pin-out
Notes
JP-1
K3 only
Check the SLMODK3
Jumper Module list
Pin 1 - SPKR
Pin 2 - GND
Pin 3 - MIC
Pin 4 - PTT
Pin 5 - GND
Pin 6 - GND
Pin 7 - N/C
Pin 8 - N/C
Some customers have found that the K3's "Line In" gain
(menu setting) is set to zero by default, thereby resulting
in no power output when transmitting. If up experience
this problem, then please consult your radio manual for
instructions on turning up this control.
Note that the K3 also has a menu setting for the "Line
Out" level, which can be turned up if needed to increase
the RX Audio going into the SignaLink
ELECRAFT
Mic Connector - TGR-SL-CABKX3
Radio Models
Pin-out
Notes
JP-1
KX3 only
Check the SLMODKX3
Jumper Module list
Pin 1 - MIC
Pin 2 - PTT
Pin 3 - GND
Pin 4 - N/C
Pin 5 - N/C
Pin 6 - N/C
Pin 7 - N/C
Pin 8 - N/C
Two cable connections are required from the SignaLink to the
Elecraft KX3 as follows:
Connect the RJ-45 end of the SLCABKX3 radio cable to
the SignaLink’s “Radio” connector. Connect the 4-pin
right-angle TRRS plug to the KX3’s “Mic” jack, being
sure to fully insert the plug.
Connect the supplied right-angle mono audio cable
between the SignaLink’s “SPKR” jack, and the KX3’s
“Phones” jack. Be sure that both plugs are fully inserted.
KX3 Radio Settings:
1 - The “Mic Bias” setting in the KX3’s menu system should be
turned OFF if you are using jumper wires. This setting can be
left ON if you are using our SLMODKX3 jumper module as it
has a built-in DC blocking capacitor.
2 - The “Mic Btn” setting should be set to either “PTT”, or
“PTT Up.Dn.”.
3 - We recommend turning the KX3’s “Audio Effects” feature
OFF, as it will likely cause receive problems during digital
operation.