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AMPHF - **KPA500 RF Power Monitor/WiFi remote** **KPA500 RF Power Monitor** *Real-time monitoring for Elecraft KPA500 owners* Six critical parameters — Power, Voltage, Current, SWR, Temperature, and Band — displayed simultaneously on a high-contrast 256×64 OLED. No menu cycling. No squinting. 10 updates per second. Built-in WiFi streams live data to any smartphone, tablet, or browser — no app required. One-time 5-minute setup. Access locally via *kpa500.local* or remotely via Tailscale from anywhere in the world. ✦ 500ms intelligent peak hold on power output ✦ WebSocket web interface with retro terminal aesthetic ✦ Remote Power ON/OFF and Operate/Standby control ✦ Over-the-air firmware updates ✦ OLED works independently of WiFi — always Plug-and-play RS-232 connection. No amplifier modifications. Assembled and tested. Cables included. **4″ × 2″ × 4″ · 9–14.8V DC · 100mA** *Built by hams, for hams.* ---$199 plus $10 shipping Listing #1761436 by KV5J Submitted on 03/09/26 Web Site: http://www.kv5j.com Submitted from customer.mmmiflx1.isp.starlink.com Click to Contact Back to Previous Page

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