Elecraft ProSet-K3 User Manual
Page 2
Elecraft, Inc. • www.elecraft.com • 831-662-8345
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SET UP AND OPERATION FOR THE ELECRAFT K2
Important! The following applies only to an Elecraft K2. See first page if you have an Elecraft K3
The PROSET-K2/K3 is pre-wired for the Elecraft default
microphone configuration. Installation consists of placing
the 8 jumper blocks straight across the pins of the K2’s
microphone configuration block (P1) and adding a 5.6K
resistor between pin 6 and pin 1 on the rear of the K2
microphone connector.
Remove the four exterior screws securing the K2 Front
Panel assembly to the front of the K2 case and the two
interior screws holding the Control Board to the Front Panel
board.
Remove the Front Panel assembly by gently pulling it
away from the K2 case.
Figure 1. Jumper Blocks and Mic Bias Resistor
(K2 ONLY!)
Install the eight supplied jumper blocks on the
Microphone Configuration Header (P1), located on the rear
of the Front Panel board (see upper left area of Figure 1).
Install each jumper so that it connects each adjacent pair of
pins. Pin 1 to AF, Pin 2 to PTT, Pin 3 to DN etc. as shown.
Install the supplied 5.6K resistor on the rear of the 8 pin
microphone connector between pin 1 and pin 6 (see Figure
1). Solder each end of the resistor and trim the excess lead
length.
Plug the Front Panel assembly back into the RF Board.
Secure it to the chassis (4 screws) and Control Board (2
screws).
Test and Set Up
Plug the 1/8” microphone plug on the ProSet-K2/K3
into the gray jack on the AD-1-K adapter.
If used, plug your PTT switch into the 1/4” jack on the
AD-1-k adapter. (The PTT switch is optional.)
Plug the AD-1-K adapter into the K2’s microphone
connector (lower left corner of the front panel).
The ProSet – K2/K3 comes with a 1/8” to 1/4”
headphone plug adapter installed. Separate the adapter to
expose the 1/8” plug and insert that into the headphone jack
next to the microphone connector.
Refer to your K2 and KSB2 manuals as needed and set
the following:
1. SSBA=1
2. SSBC = 2
3. POWER = 5 watts
4. VOX on or off as desired.
5. Attach a suitable dummy load to the K2 Ant. jack.
Speak into the microphone (if using PTT, press the
switch). You should observe movement on the K2’s power
display.
This confirms the microphone is working. Refer to Using the
SSB Adapter in the KSB2 manual for more details on SSB
set up and operation. You may wish to optimize the K2’s
transmit audio by adjusting the BF1t settings for USB and
LSB. See SSB Transmit BFO Optimization in the KSB2
manual. Adjusting these settings allows you to shift the K2’s
transmit frequency response up or down to match your
personal voice characteristics and taste.
In Case of Difficulty
If you have problems getting your ProSet – K2/K3 to
operate with the K2 first confirm that you have properly
installed the eight microphone configuration jumpers and the
5.6K resistor. If you have not previously confirmed the
operation of your KSB2 with another microphone, refer to
the troubleshooting section of the KSB2 manual.
Also, please feel free to email us at
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