H-28/GR
Electrical Chest Set H-28/GR is composed of a transmitter assembly, chest unit, and cord assembly. The equipment is used as a microphone with either wire or radio equipment. Provision is also made for connecting a headset for two way communication. This chest set may be used with Remote Control Equipment AN/TRA-2, Radio Control Central AN/TRQ-1 or Radio Set AN/CRC-3.
Specifications
- CONSISTS OF
- 1 Chest Unit H-17/GT
- 1 Cord Assembly CX-660/GR
- 1 Dummy Plug Assembly Drawing Number SC-D-19222
- PHYSICAL DESCRIPTION
- Dimensions: (Chest Unit)
- Length - 2-1/4 inches (57.15 mm)
- Width - 4-1/2 inches (114.30 mm)
- Height - 6 inches (152.40 mm)
- Weight - Not rated
- Microphone Data
- Type - Carbon
- Mounting - Swivel
- Cord Data
- Length - Not rated
- Number of Conductors - 3
- Number of Connectors - 2
- Connector Designations
- JK-53 Plug (Chest Set End)
- PL-68 Plug (System End)
- MICROPHONE
- INPUT
- Operating Current - 325 milliamperes, maximum
- OUTPUT
- Nominal Impedance - 28 ohms
- Frequency Range - 400 to 3,200 cps
- SWITCH BOX
- Switch Function: Connects Microphone circuit and control circuit contacts
- Switch Electrical Ratings
- Current Rating - 2 amperes control circuit, 150 ma microphone circuit
- Connector Designation
- Microphone Jack mates with plug PL-291
- Headset Jack mates with plug PL-54
- Environmental Limitations
- Equipment Operating:
- Temperature - 40° F to +131° F
- Elevation - Up to 10, 000 feet above sea level
- Relative Humidity - Up to 98 percent
- Equipment Non-operating:
- Temperature - 80° F to + 160° F
- Elevation - Up to 50, 000 feet above sea level
- Relative Humidity - Up to 100 percent including condensation caused by temperature changes
- Vibration - No mechanical resonance below 55 cps
Reference Files
- MIL-C-13064
- MIL-M-13189
- SC-D-17462
- SC-D-19222
- ARCS Research and Development Corp Standardization of Chest Sets Final Report :Technical Analysis Phase Contract DA36-039, SC66416
- MSS 5965-2