CC-7 “Groundskeeper”

$150.00

Origin Story

Recovered from a long-sealed broadcast maintenance lab in Tulsa, Oklahoma, CC-7 “Groundskeeper” was first designed as a mobile relay tester for early AM radio transmitters. The lab engineers—pressed for resources—built the unit’s casing from a Cain’s Coffee Co. tin, known for its tight seal and conductive metal finish.

Originally assembled to measure ground resistance and audio signal clarity, the unit’s onboard relay system doubled as a crude broadcast stabilizer, keeping rural transmission lines humming through storms and static. When R3BOTS technicians rediscovered the chassis, it was partially fused to its original test bench—wires intact, speaker plate corroded but functional.

The restoration revealed an elegant simplicity: an analog coil, a Calrad speaker head, and a green-labeled “Machine” solenoid unit—each perfectly tuned to stabilize audio frequencies. Once powered, CC-7 emitted a low hum resembling background radio noise—a steady heartbeat of forgotten frequencies.

Now fully operational, CC-7 serves within the R3BOTS Communications Division, ensuring that every Field Ops signal stays strong and stable, from the factory floor to the far edge of transmission range.

Construction & Components

  • Torso: Cain’s Coffee Co. 1½ oz steel tin

  • Head: IDECO junction cap with Calrad PM-1½W speaker relay

  • Arms: Vintage brass latching terminals with mechanical knuckle joints

  • Core: Machine-labeled solenoid coil and early broadcast relay wiring

  • Legs: Dual-threaded rods with compression bolts and grounded stabilizer feet

  • Base: Standard R3BOTS topographic platform

Capabilities & Function

  • Signal grounding and frequency balancing

  • Low-voltage relay testing and field calibration

  • Environmental noise filtering through analog coil resonance

R3BOTS Recovery Report

Recovered: April 2025 – Tulsa, Oklahoma

Condition: 84% structural integrity, partial oxidation on relay terminals

Restored By: Volt Division – Broadcast Systems Team

Operational Status: Active

Designation: CC-7 “Groundskeeper”

Role: Signal Stabilization and Field Communications

Technical Specifications 

Height: 7.25 inches

Torso: Cain’s Coffee Co. 1½ oz Tin

Power Unit: Calrad PM-1½W Speaker Relay / Solenoid Coil

Serial Number: CC7-VLT-403B

Core Function: Ground Resistance Testing / Frequency Stabilization

Personality Profile

Steady – Grounded – Loyal

CC-7 stands firm and unshaken, humming quietly even when others lose signal—a reliable sentinel of calm amid the static.

Repurpose. Rebuild. Reinvent.

Origin Story

Recovered from a long-sealed broadcast maintenance lab in Tulsa, Oklahoma, CC-7 “Groundskeeper” was first designed as a mobile relay tester for early AM radio transmitters. The lab engineers—pressed for resources—built the unit’s casing from a Cain’s Coffee Co. tin, known for its tight seal and conductive metal finish.

Originally assembled to measure ground resistance and audio signal clarity, the unit’s onboard relay system doubled as a crude broadcast stabilizer, keeping rural transmission lines humming through storms and static. When R3BOTS technicians rediscovered the chassis, it was partially fused to its original test bench—wires intact, speaker plate corroded but functional.

The restoration revealed an elegant simplicity: an analog coil, a Calrad speaker head, and a green-labeled “Machine” solenoid unit—each perfectly tuned to stabilize audio frequencies. Once powered, CC-7 emitted a low hum resembling background radio noise—a steady heartbeat of forgotten frequencies.

Now fully operational, CC-7 serves within the R3BOTS Communications Division, ensuring that every Field Ops signal stays strong and stable, from the factory floor to the far edge of transmission range.

Construction & Components

  • Torso: Cain’s Coffee Co. 1½ oz steel tin

  • Head: IDECO junction cap with Calrad PM-1½W speaker relay

  • Arms: Vintage brass latching terminals with mechanical knuckle joints

  • Core: Machine-labeled solenoid coil and early broadcast relay wiring

  • Legs: Dual-threaded rods with compression bolts and grounded stabilizer feet

  • Base: Standard R3BOTS topographic platform

Capabilities & Function

  • Signal grounding and frequency balancing

  • Low-voltage relay testing and field calibration

  • Environmental noise filtering through analog coil resonance

R3BOTS Recovery Report

Recovered: April 2025 – Tulsa, Oklahoma

Condition: 84% structural integrity, partial oxidation on relay terminals

Restored By: Volt Division – Broadcast Systems Team

Operational Status: Active

Designation: CC-7 “Groundskeeper”

Role: Signal Stabilization and Field Communications

Technical Specifications 

Height: 7.25 inches

Torso: Cain’s Coffee Co. 1½ oz Tin

Power Unit: Calrad PM-1½W Speaker Relay / Solenoid Coil

Serial Number: CC7-VLT-403B

Core Function: Ground Resistance Testing / Frequency Stabilization

Personality Profile

Steady – Grounded – Loyal

CC-7 stands firm and unshaken, humming quietly even when others lose signal—a reliable sentinel of calm amid the static.

Repurpose. Rebuild. Reinvent.