Uploaded October 2025 | Updated September 2026, 2 weeks ago
4-Square Antenna: Today’s mission: get everything grounded, bolted, and ready before the big 4-Square tune-up!
I realised I’d tuned the array for best SWR, not for X = 0, so before I fix that - we need to sort the tower, coax, and winch area - all with proper grounding.
Tasks:
👉 Hammer in new copper rods and bond them to the mast and cabinet
👉 Mount the winch battery cabinet on C16 timbers
👉 Add a grounding plate and lugs for coax feeds
👉 Tidy the wiring for the new Multi-2 setup
👉 Talk about why my ACOM amp saga still isn’t over 😅
If you enjoy real-world ham-radio builds, with mistakes, fixes, and learning as we go — you’ll love this one.
Next video: the final 4-Square tuning and on-air test!
00:00 – Intro & The 4-Square Mistake
00:35 – Why X=0 Matters More Than SWR
01:00 – Grounding Before Tuning
02:20 – Cutting Timbers for the Winch Cabinet
03:40 – Mounting the Heavy Cabinet
05:20 – Planning the Dead-Man Anchor & Winch Setup
06:15 – Hammering in the Ground Rod
07:00 – ChatGPT Told Me to Do This?!
08:10 – Grinding & Prepping the Cabinet Backplate
09:00 – The AOM Amplifier Saga Continues
11:00 – Drilling, Tapping & Making Grounding Plates
13:00 – Connecting the Ground Straps
15:20 – Testing Tower Bonding & Rotator Ground
17:00 – Thinking About the Falling Derrick Design
18:40 – ‘Invisibleising’ the Tower (Grounding Strategy)
20:00 – Checking Every Connection
21:00 – Final Ground Tests – It’s All Bonded!
22:00 – Wrap-Up & Plans for the Next Tune-Up
4-Square Antenna: Today’s mission: get everything grounded, bolted, and ready before the big 4-Square tune-up!
I realised I’d tuned the array for best SWR, not for X = 0, so before I fix that - we need to sort the tower, coax, and winch area - all with proper grounding.
Tasks:
👉 Hammer in new copper rods and bond them to the mast and cabinet
👉 Mount the winch battery cabinet on C16 timbers
👉 Add a grounding plate and lugs for coax feeds
👉 Tidy the wiring for the new Multi-2 setup
👉 Talk about why my ACOM amp saga still isn’t over 😅
If you enjoy real-world ham-radio builds, with mistakes, fixes, and learning as we go — you’ll love this one.
Next video: the final 4-Square tuning and on-air test!
00:00 – Intro & The 4-Square Mistake
00:35 – Why X=0 Matters More Than SWR
01:00 – Grounding Before Tuning
02:20 – Cutting Timbers for the Winch Cabinet
03:40 – Mounting the Heavy Cabinet
05:20 – Planning the Dead-Man Anchor & Winch Setup
06:15 – Hammering in the Ground Rod
07:00 – ChatGPT Told Me to Do This?!
08:10 – Grinding & Prepping the Cabinet Backplate
09:00 – The AOM Amplifier Saga Continues
11:00 – Drilling, Tapping & Making Grounding Plates
13:00 – Connecting the Ground Straps
15:20 – Testing Tower Bonding & Rotator Ground
17:00 – Thinking About the Falling Derrick Design
18:40 – ‘Invisibleising’ the Tower (Grounding Strategy)
20:00 – Checking Every Connection
21:00 – Final Ground Tests – It’s All Bonded!
22:00 – Wrap-Up & Plans for the Next Tune-Up






![How to AB Test Antennas Without Fooling Yourself
This video is not about which antenna is best. It’s about how to test antennas in a way that removes bias, guesswork, and misleading results.
- Why time of day matters
- What must stay fixed in a fair A/B test
- Why I used this method
- How I alternated antennas cleanly
- How TX and RX are handled differently
The entire unedited WSPR session is linked so you can see exactly how the test was run.
https://youtu.be/8e2iKFSv2vw
In the next video, I’ll show the results of a 40 m night-time test where antenna behaviour really separates one from the other.
ChatGPT Prompt:
Hello ChatGPT.
I have conducted a controlled A/B antenna comparison using WSPR only.
Both antennas were tested:
• at the same station
• on the same band
• at the same power
• within clearly defined time windows
Nothing else was changed.
You are provided with:
1. i) A WSJT-X WSPR RX log covering the entire session, including ii) timestamps that identify which antenna was in use at each time.
2. WSPRnet TX and RX reports exports for two callsigns, each corresponding to one antenna.
Your tasks:
TX analysis:
• Identify which antenna was in use for each transmit period.
• For each antenna, calculate:
o total number of reports
o number of unique reporters
o median SNR (not maximum)
o median distance
• Group TX results into distance buckets:
o short haul (0–2000 km)
o medium haul (2000–4000 km)
o long haul ([greater than] 4000 km)
• For each bucket, show report count and median SNR.
RX analysis:
• Using the RX log, separate decodes by antenna and time window.
• For each antenna, calculate:
o total decode count
o median RX SNR
o median distance (if available)
Output requirements:
• Present results in clear tables.
• Do not declare a single winner.
• Explain what each antenna appears to be better suited for - based on the data.
• Focus on differences in behaviour, coverage, and application rather than preference or opinion.
• Base conclusions strictly on the data provided, not on predicted behaviour How to AB Test Antennas Without Fooling Yourself](https://i.ytimg.com/vi/mx5I23zexYc/mqdefault.jpg)



