Introduction; Specifications - ELECRAFT K3 Installation And Operation Manual

Introduction

If your K144XV is already installed in your K3, turn to Using the K144XV on page 19
for operating instructions.
The K144XV option adds 144 to 148 MHz receive and 10-watt transmit capability to your K3 or K3
separate antenna connector on the rear panel. Complete specifications and operating instructions are included in
your K3or K3 Owner's manual. This manual covers both installation and operation of the K144XV option in a
S
K3 or K3 transceiver.
S
Only a few basic hand tools are needed (see page 6) to perform the installation. A minimal amount of soldering
is required to install a power connector on the K3 RF board on some older K3 transceivers. If you have a K3
(not K3 ) see Figure 4 on page 11 for the location of the power connector to see if it is pre-installed. All K3
S
transceivers have the power connector pre-installed. It is in a different location (see Figure 10 on page 16).
If you are installing the K144XV in a K3 (not K3
KSYN3A Synthesizer and the KRX3 or KRX3A sub receiver installed you may need to
modify your KREF3 Reference Oscillator to provide a higher drive level for all of the
devices. See the manual Elecraft K3 KREF3 Output Level Modification on the Elecraft web
site at www.elecraft.com or contact customer support for more information.

Specifications

General
Frequency Range:
I.F. Range:
Dimensions (HWD):
Supply Voltage:
Typical Current Consumption:
Transmit
Power Output:
Spurious Output:
Receive
Noise Figure:
Gain:
Features
PIN diode T/R switching for full QSK
Built-in temperature sensing with automatic over-temperature shut-down
Separate BNC antenna connector on K3 rear panel
Field upgradeable with built-in diagnostic and troubleshooting commands
S
144-148 MHz
28-30 MHz
1x3.2x5 inches (2.5x8.1x12.7 cm)
13.8 VDC
Transmit: 2A
Receive: 0.25A
Off: 0.01A
8 to10W Typical (13.8 V at the K3 in Transmit. Lower voltages will
reduce the maximum power out)
< -60 dBc
1 dB typical
20 dB typical
3
) transceiver that also has the newer
via a
S
S