The Cobra Replacement Antenna (CM 300-002) restores full transmit range on HH350, HH350W, and HH500 handheld VHF radios for only $7.95 — buy online for the genuine fit-and-forget fix.
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Cobra Replacement Antenna for HH350/350W/500 — $7.95
The Cobra Replacement Antenna (Item # CM 300-002) is the genuine antenna for Cobra HH350, HH350W, and HH500 handheld marine VHF radios. Snapped, lost, or weak-signal antenna? Replace it online for just $7.95 and restore full range and clear transmissions on the water.
How to Replace Your HH350/HH500 Antenna
Unscrew the damaged antenna from the radio's top connector and thread this genuine replacement on hand-tight. No tools or soldering required — a two-minute fix that instantly restores rated transmit performance.
Specifications
Brand: Cobra
Part Number: CM 300-002
Product Type: Handheld VHF replacement antenna
Compatibility: Cobra HH350, HH350W, HH500
Install: Screw-on, tool-free
Compatibility Checklist
Confirm your radio is an HH350, HH350W, or HH500 — this antenna is tuned for those models' frequency band and connector. Using a non-matching antenna can reduce range and risk transmit issues.
Price and Deal Value
At $7.95, this genuine Cobra part beats generic alternatives on fit and tuning. Stack coupon OUTPOST12 for an extra 12% off, and pair it with other gear to reach $45 free shipping.
Features
Genuine Cobra CM 300-002 antenna — exact screw-on fit for HH350, HH350W, and HH500
Restores full transmit range in a two-minute tool-free install for only $7.95
Cheapest genuine replacement — extra 12% off with coupon OUTPOST12
Boaters and anglers: a cracked antenna kills your VHF range. This genuine Cobra replacement snaps on in seconds and gets your HH350/HH500 transmitting at full rated power again.
Buy the Genuine Part
$7.95 sale price — the affordable fix
12% extra savings with coupon OUTPOST12
Add to a $45+ order for free shipping
Comparison
Generic whip antennas may not seat or tune correctly on Cobra radios. The CM 300-002 is Cobra's own part, matched to HH350/350W/500 frequency and connector specs.
Frequently Asked Questions
What replacement antenna fits Cobra HH350 and HH500 radios?
The Cobra CM 300-002 — the genuine screw-on antenna compatible with HH350, HH350W, and HH500, available here for $7.95.
How do I replace a Cobra HH350/HH500 antenna?
Unscrew the old antenna from the top of the radio and screw this one on hand-tight. No tools needed.
Is the CM 300-002 compatible with the HH350W?
Yes — it fits HH350, HH350W, and HH500 models exactly.
What's the current price and is it worth it over generic antennas?
It's $7.95 — and unlike generic versions, it's tuned and fitted by Cobra for correct range and SWR performance. Apply coupon OUTPOST12 for 12% more savings.
4.2★★★★★★★★★★(9)
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Customer Reviews
9
★★★★★★★★★★5.0
t*l
Range restored on my HH350
My original antenna had a crack near the base from years of being yanked out of the pouch, and my transmit range had shrunk to almost nothing. Snapped this genuine replacement on and it's like a new radio again — clear transmissions back to the marina from several miles out. Screws on tight, threads feel solid. Ten minutes and seven dollars to fix my most important safety gear. No-brainer.
★★★★★★★★★★5.0
p**d
Verified
Exact fit, done
Genuine Cobra part, threaded right on, full range back immediately. Nothing else to say.
★★★★★★★★★★4.0
w***d
Verified
Good replacement, slightly stiffer
Fits my HH350W perfectly and reception/transmit seem back to normal. The whip feels a bit stiffer than the original but that might actually help it survive the tackle box. Would buy again if needed.
★★★★★★★★★★5.0
f**t
Verified
Better than the original
Honestly this replacement seems to transmit better than the factory antenna did when the radio was new. Checked in with a buddy across the bay and he said I was clearer than usual. At $7.95 it's cheap insurance — I ordered a spare to keep on the boat.
★★★★★★★★★★3.0
e*****b
Verified
Works but threads needed convincing
Functionally fine once installed — range is back and audio is clean. But the threading on mine was tight going on and I had to be careful not to cross-thread it. A little dielectric grease solved it. Would still recommend since it's a genuine part at a fair price, just be gentle during install.
★★★★★★★★★★5.0
b***p
Verified
Kept my old radio alive
The HH350 is a workhorse and it was the antenna that finally gave out, not the radio. This replacement saved me from buying a whole new handheld. Perfect fit, watertight seal, and my range checks came back normal. Older radio owners, don't toss your unit over a cheap part like this.
★★★★★★★★★★4.0
f***c
Quick fix before the season
Was prepping the boat for spring and noticed the rubber boot on my antenna had split. Ordered this, swapped it in under a minute, and did a radio check from the ramp — loud and clear to the harbor master a few miles out. Does exactly what it should.
★★★★★★★★★★2.0
l**y
Verified
Antenna arrived bent
Shipping packaging was just a bubble mailer and mine came with a noticeable bend in the whip about halfway up. It still transmits but reception seems off and it looks bad. Probably a shipping issue rather than a product flaw, but I'd expect more care for anything going on a safety radio.
★★★★★★★★★★5.0
v****k
Verified
Buy a spare, seriously
These antennas take abuse on any working boat, so I keep a spare in the ditch bag now. Installed this one on my HH500, thread-in is smooth, and the seal against the radio body looks properly watertight. Range tested equal to stock. Cheap, genuine, and peace of mind.
