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In an effort to reduce spam and the spread of viruses, we are now providing this form for you to contact a person that has placed an ad on QTH.COM. After submitting this form, an e-mail will be generated and sent to BOTH you and the person that placed the ad. The e-mail will contain a copy of the ad, plus your e-mail information and your comments.
NOTE -- BEFORE YOU RESPOND:
| Ad Number: | 1762618 |
| Date Placed: | 03/20/26 |
| Name: | Keith Ennis |
| Phone Number: | E-MAIL ONLY |
| Callsign: | KV5J |
| Category: | RADIOHF |
| Heading: | KAT500 Antenna Tuner Display Unit |
| Ad Message: | KAT500 Antenna Tuner Display — Real-Time OLED Monitor for Elecraft KAT500 Seven parameters, always visible, on a high-contrast 256×64 OLED. No menu cycling. Mount anywhere in the shack. Monitors: Mode (BYPASS / MANUAL / AUTO) · Antenna Port · Frequency Range SWR After · SWR Before L (µH) · C (pF) — auto-reordered to match your SIDE setting Frequency Range — the exact kHz bin the KAT500 is currently tuned to (e.g. 14200–14229) Direct RS-232 integration via MAX3232 — no tuner modification required. Specs: XIAO ESP32-C3 · SSD1322 256×64 OLED · 9–14.8V DC · 100mA · 4″×2″×4″ Bonus: Built-In WiFi — green phosphor web interface mirrors the OLED with color-coded SWR bars (amber >1.5:1, red >2.1:1). Web controls include Power, Mode, Antenna Port, and Full Tune. Fault alerts display instantly. OTA firmware updates — no USB required. OLED operates independently of WiFi at all times. Includes: Assembled & tested unit, DC power cable, RS-232 cable. $229 plus $10 shipping PP |
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