DL4KA PA500 User Manual

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DIY599.com

RF linear power amplifier with build-in antenna tuner (ATU)

PA500

INSTRUCTION MANUAL

Version 2

operating frequency range between 3.5MHz-30MHz

The device requires an amateur radio transceiver to operate.

This device is for use by licensed radio amateurs only

FCC-ID: 2A2IEPA500

© 2021 DL4KA

Questions and Answers:

B
Barbara RichardsAug 6, 2025
What to do if DL4KA Tuner PA500 has no transmission?
- C
  Christopher SimmonsAug 6, 2025
  If there's no transmission or amplification with your DL4KA Tuner PA500, here are a few things to check: * Ensure the device is not in BYPASS mode; set it to TX Mode. * Verify that the bandpass filter setting matches the TX frequency you're using. Adjust the filter if needed. * Check the transceiver and its connection to ensure it's transmitting power. * Confirm that the transceiver is not in SSB mode (no carrier).
R
Rhonda MeyersAug 15, 2025
Why is my DL4KA Tuner not tuning the antenna?
- C
  Cassidy RobertsAug 15, 2025
  If the antenna tuning function isn't working on your DL4KA Tuner, consider these potential causes: * Make sure a proper antenna, suitable for the PA500's operating frequencies, is connected. * Check if the antenna tuner is in manual mode; if so, switch it to auto-mode or trigger a manual tuning event. * It's possible the antenna is already matched.

DL4KA PA500 Specifications

General

Brand	DL4KA
Model	PA500
Category	Tuner
Language	English