K3 Options & Upgrades
Installation manuals for all available K3 option boards and upgrade kits.
KPA3 - 100W Internal Amplifier
Section titled “KPA3 - 100W Internal Amplifier”The KPA3 upgrades the K3 from 10W to 100W output.
- KPA3 Option Installation Rev G (3.0 MB)
- KPA3 Connector Mod Kit Manual (2.2 MB)
- KPA3 I/O Mod Kit Instructions (1.1 MB)
KAT3 - Internal Autotuner
Section titled “KAT3 - Internal Autotuner”Wide-range internal automatic antenna tuner.
- KAT3 Option Installation Rev C (2.0 MB)
KBPF3 - General Coverage Receive
Section titled “KBPF3 - General Coverage Receive”Adds general coverage receive capability (below the ham bands).
- KBPF3 Option Installation Rev D (2.5 MB)
- KBPF3 Modification Kit Instructions Rev A2 (2.2 MB)
KXV3 / KXV3A - Transverter Interface
Section titled “KXV3 / KXV3A - Transverter Interface”Rear-panel interface for transverters, IF output, and RX antenna input.
- KXV3 Option Installation Rev C (2.2 MB)
- KXV3A Option Installation Rev B (1.8 MB)
KRX3 - Sub Receiver
Section titled “KRX3 - Sub Receiver”Second independent receiver for diversity or SO2R operation.
KDVR3 - Digital Voice Recorder
Section titled “KDVR3 - Digital Voice Recorder”Records and plays back audio for CQ messages and contest operation.
- KDVR3 Option Installation Rev C (1.7 MB)
K3EXREF - External Reference
Section titled “K3EXREF - External Reference”10 MHz external frequency reference input.
- K3EXREF Errata B1-1 (196 KB)
Related Sections
Section titled “Related Sections”- K3 Modifications & App Notes - Mod notes related to these option boards
- K3S Options - Options for the updated K3S model (KPA3A, KAT3A, etc.)