This is a good example of a typical CCC era, L-601 tower with matching BC-301 cab. The structure maintains a high degree of historic integrity. Tower alterations are few: aluminum siding added in 1946 (over original "v" groove), 1/1 double hung windows replaced with aluminum frame, 1/1 sliders, upper story door replaced.

Cab revisions include: 911 wood extension to guardrail, minor interior remodeling, and asphalt shingles added. The original wood fire escape ladder has been replaced with a chain type, roll up ladder. There are few other modifications. A 350 gallon water storage tank is located on the ground floor. The utility room houses a refrigerator, hot water tank, shower and storage cabinets. An electric range, bedding and cabinets are located in the cab. CDF has only four L-601 towers.

Penon Blanco Peak has an impressive escarpment across its southern flank. The summit is a broad, flat area covered in annual grasses, brush, oak trees and some digger pine. Rock outcroppings near the tower have proven quite hospitable for rattlesnake occupation. Radio repeaters are housed in the lookout, (antennas mounted on the catwalk). The station is not readily accessible to the public, being some 2 miles from paved road. (MVT 10/91)

The aluminium siding has been damaged since the 1991 survey and the exterior is in poor condition.