Uploaded May 2026 | Updated September 2026, 2 weeks ago

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Today we’re lowering the 40ft / 12m mast again so I can finally finish things off properly - fit the Rotator Genius magnetic sensor, run the coax, tidy up the guys, sort the handover system and generally make the whole thing operational.

This mast is basically a smaller version of the big 19m / 62ft mast further down the field and uses the same idea:

- falling derrick
- pulley system
- ropes and orphan guys
- 12V winch
- and a fair amount of trial and error

Real-world engineering, knots, shackles, lowering and raising the mast, routing coax and solving problems as they appear.

We also:

- test the Rotator Genius magnetic sensor
- discuss guy geometry and rope stretch
- cut the coax slot into the mast
- run Messi & Paoloni coax
- talk about the future 15m Yagi

and listen to some very noisy sheep at Holly Farm.

Honestly, this was just a lovely day in the field.

Chapters
00:00 Finishing off Mast #2
00:50 Sorting the falling derrick handover
01:50 Orphan guys explained again
03:58 Mast prep
04:45 Tower going down
06:32 Plans for the 15m Yagi
06:55 Rotator Genius magnetic sensor
09:34 Rotator wiring explained
11:30 Cutting the coax slot
13:34 Messi & Paoloni coax
15:30 Mast going up
16:44 Future 15m plans
17:21 The sheep interruption 😄