Name: Do EFHW Antennas REALLY Need a Counterpoise? Unexpected Result!
Uploaded: 2025-10-02T16:01:24+00:00
Duration: 12 min 15 s
Description: Does your End Fed Half Wave (EFHW) need a counterpoise for efficient operation? Let's take a look at allowing the COAX to be the counterpoise and then isolating it from the antenna. Does the EFHW's pe

3 months ago

Technology AA3K AA3K On The Go Amateur Radio Ham Radio amateur radio antennas antenna counterpoise antennas building antennas counterpoise efhw

Does your End Fed Half Wave (EFHW) need a counterpoise for efficient operation? Let's take a look at allowing the COAX to be the counterpoise and then isolating it from the antenna. Does the EFHW's performance change - for better or worse - between these two configurations? The results may well surprise you and influence how you set up your antenna when going portable whether doing POTA, SOTA or just going out to have some ham radio fun.

Check out my video on how the feed COAX length affects an EFHW:
https://rumble.com/embed/v6x9g8m/?pub=xmrms

💬 Got questions or want to share your experience with similar antennas? Drop a comment below!

Chapters:
00:00 Opening
00:15 Title
00:27 Introduction
01:55 Test Setup
03:15 Observations
08:35 Conclusions