When antenna adjustments were necessary, this 1940 family was able to effect them quickly, thanks to this “well-sweep” antenna mast, constructed with 18 foot lumber. The support consisted of two 4×4’s four feet part, set in cement. The mast itself is hinged at the midpoint and counterbalanced for ease of raising and lowering.

Here, while Little Sister supervises, Junior tends to the antenna wire while Father makes the required adjustments. When he’s done, he’ll hoist it up to its 31 foot height, pin it in place, and go inside to pull in the distant stations. These plans appeared in the December 1940 issue of Popular Mechanics.