Manual — An/prc-158

This equipment contains RF energy hazards. Maintain a minimum distance of 3 feet (1 meter) from the antenna during transmission at high power (20W+). Do not operate near explosive atmospheres or medical implants.

| Symptom | Probable Cause | Corrective Action | | :--- | :--- | :--- | | Unit fails to power on | Dead battery | Replace BB-2590. Check battery temperature. | | "ANT FAULT" on screen | High VSWR (no antenna) | Ensure antenna is tight. Check for damage. | | No audio on Rx | Squelch too high | Pull VOL knob out (momentary monitor). | | GPS not acquiring | Obstructed sky view | Move to open area. Wait 5 minutes (cold start). | | "TIME OUT" warning | PTT held > 2 min | Release PTT. Radio resets timer. | an/prc-158 manual

OPERATOR’S MANUAL FOR RADIO SET AN/PRC-158 (NSN: 5820-01-660-3255) This equipment contains RF energy hazards

The AN/PRC-158 (also known as the Manpack version of the RT-1946) is a next-generation, two-channel, software-defined manpack radio. It is the successor to the AN/PRC-117G and AN/PRC-152. It provides simultaneous voice and data communication across HF, VHF, and UHF bands. | Symptom | Probable Cause | Corrective Action

| Parameter | Value | | :--- | :--- | | Dimensions (HxWxD) | 11.6 x 4.3 x 3.5 inches (with battery) | | Weight | 8.2 lbs (with battery & whip) | | Operating Temp | -30°C to +60°C | | Immersion | 2 meters for 30 minutes (MIL-STD-810) | | Frequency Stability | ±0.5 ppm (GPS disciplined) | | Encryption | Type 1 (Suite A & B), AES-256 |