K2 HF Transceiver Solar Power


Many years ago (approx. 2003) I built the Elecraft K2 HF transceiver. Normally I keep the internal PS-1229 2.9AHr sealed lead acid battery charged with a 12W marine solar panel located in a nearby window. In order to use the transceiver in the field, I purchased a portable 70W solar panel. The panel feeds a DC/DC converter which feeds the K2. Due to a protection series diode in the K2 battery circuit, PWM regulators can’t be used.

Equipment Configuration

Fig.1 K2 Transceiver to Solar Panel Connection

Figure 1 shows the solar panel connection. I found the quick connect DC5521 connectors with screw terminals very handy to make the wiring harness.

Fig.2 YouTube Video K2 HF Transceiver Solar Power

Please send your comments, questions and suggestions to:

YouTube Channel
YouTube Channel


#1. – “Elecraft K2 HF Transceiver”

By Jeremy Clark

Jeremy Clark is a Senior Telecommunications Engineer and Advanced Amateur Radio Operator VE3PKC. He is the author of E-Books on Telecommunications, Navigation & Electronics.