The Cobra CM 300-003 Dual Band Replacement Antenna is the exact factory-spec antenna for the Cobra MR HH450 All-Terrain VHF/GMRS radio. It's the best-fit part for HH450 owners with a lost, bent, or broken stock antenna who want original dual-band performance restored. Buy online now for just $7.95 — an affordable genuine Cobra part — with free shipping on orders over $45.
Specifications
- Brand: Cobra
- Model / Part Number: CM 300-003
- Product Type: Dual-band replacement antenna
- Bands: VHF marine and GMRS
- Compatibility: Cobra MR HH450 and HH450 DUAL All-Terrain radios
How to Replace the Antenna on a Cobra HH450 DUAL
Power the radio off, unscrew the damaged antenna from the top mount, and screw the CM 300-003 on firmly by hand — no tools required. It carries both VHF marine and GMRS signals, so no swapping is needed between bands.
Can I Use the MR HH450 Antenna for GMRS?
Yes — this is a dual-band antenna designed to transmit and receive on both the VHF marine and GMRS bands the HH450 supports, restoring original range on each.
Price and Deal Value
At $7.95, this is the affordable way to fix your HH450 without replacing the radio. Add it to a cart with other Cobra accessories to pass the $45 free-shipping threshold, and apply coupon OUTPOST12 for an extra 12% discount at checkout.
Comparisons and Alternatives
Third-party antennas may not be tuned for the HH450's dual-band design and can degrade marine range. The CM 300-003 is the guaranteed-fit genuine part at a discount price.
