How To Convert Stryker SR-497HPC
to 11 Meters (CB Band)
TekShack Edition
Simple Jumper Relocation Mod – No Soldering Required on Most Units (2022+ V2 and Later)
This modification shifts your Stryker SR-497HPC (a 10-meter amateur radio) to the 11-meter CB band (26.965–27.405 MHz).
• High-power operation (>4W carrier AM / >12W PEP SSB) on CB frequencies requires proper FCC licensing or may be illegal.
• Modifying may void warranty and carries risk of damage.
• Proceed at your own risk. Use ESD protection, work unplugged, and consult a technician if unsure.
Tools You Will Need
- Phillips screwdriver set
- Needle-nose pliers (for gentle jumper removal)
- Good lighting + magnification (optional but helpful)
- Anti-static wrist strap (recommended)
Step-by-Step Conversion Guide
1. Preparation
Disconnect power, antenna, mic, and all cables. Place radio on static-free surface. Remove top & bottom covers (usually 6–8 screws total). Gently separate covers.
2. Locate JP104 Header
On most recent Stryker SR-497HPC boards (V2 / 2022+), find the 3-pin header labeled JP104 (small black jumper block usually present). It is typically near the center or synthesizer area of the green main PCB.
3. The Modification – Move the Jumper
Factory default (10 meters): Jumper bridges the two pins closest to the front/edge (pins 1-2).
11-meter CB mode: Move the jumper to the two rear/inner pins (pins 2-3) — simply lift it off and place it right beside / parallel to the original position.
BEFORE (10m Stock)
Jumper on front/middle pins
[ BEFORE – Jumper on Pins 1-2 ]
AFTER (11m CB)
Jumper shifted to middle/rear pins
[ AFTER – Jumper on Pins 2-3
4. Reassemble & Test
Replace covers securely. Connect to power and use a dummy load first. Power on — channels should now read CB (1–40). Test RX on Ch. 19 (~27.185 MHz). If aligned properly, TX should work out of the box. Fine-tune VCO/slug if needed (advanced).
Pro Tips & Troubleshooting
- Radio dead after move? → Revert jumper to original position.
- Still on 10m? → Confirm JP104 is correct header (compare to YouTube).
- Frequency off? → May need quick coil adjustment (see tech videos).
