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K40 K-30 MFR# K-30,CB,Black 39CJ52

Grainger
(126755)
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US $43.90
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Condition:
New
More than 10 available83 sold

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US $6.99 delivery in 2–4 days
Get it between Mon, Dec 1 and Wed, Dec 3 to 94104.
Located in: Minooka, Illinois, United States
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eBay item number:315380775358
Last updated on Nov 27, 2025 12:40:10 PSTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
MPN
K-30
UPC
0739238110303
Compatible Brand
Universal
Size
35 in
Color
Multi-Color
Year Manufactured
Regular
Band
CB
Material
Steel
Compatible Product
Cb Radio
Number of Outputs
1
Brand
K40
Type
Antenna
Number of Inputs
1
Model
K40 K-30
Features
No
Category

About this product

Product Information

The K40 K-30 is a 35-inch CB Antenna for mobile/in-vehicle radios. It bears the MPN number 83135298 and does not need holes drilled for mounting. Thanks to its magnet mount, this CB antenna adheres to surfaces with little fuss and stays grounded. The K40 K-30 is a 300-watt antenna is omni-directional and ideal for radio communications. This 35-inch-high antenna is also made out of stainless steel, which increases its lifespan.

Product Identifiers

Brand
K40
UPC
0739238110303
Model
K40 K-30
eBay Product ID (ePID)
1300232114

Product Key Features

Size
35 in
Year Manufactured
Regular
Compatible Product
Cb Radio
Number of Inputs
1
Compatible Brand
Universal
Color
Multi-Color
Band
CB
Features
No
Material
Steel
Number of Outputs
1
Type
Antenna

Item description from the seller

About this seller

Grainger

99.7% positive feedback•1.0M items sold

Joined Feb 2016
Usually responds within 24 hours
Visit storeContact

Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
4.9
Shipping speed
5.0
Communication
5.0

Seller feedback (146,318)

All ratingsselected
Positive
Neutral
Negative
  • 7***u (65)- Feedback left by buyer.
    Past month
    Verified purchase
    Well built and arrived on time and in good condition. A very good cb antenna. I even was able to connect with skip from my mobile cb.
  • u***i (329)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Got it literally the next day .Great experience !!
  • r***5 (149)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Works well
See all feedback

Product ratings and reviews

Learn more
4.4
94 product ratings
  • 72 users rated this 5 out of 5 stars
  • 7 users rated this 4 out of 5 stars
  • 4 users rated this 3 out of 5 stars
  • 4 users rated this 2 out of 5 stars
  • 7 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 73 reviews
  • by jim_with_q_and_b
    Jul 29, 2022Top favorable review

    Antenna

    There were cheaper models available, but this one has better features and is made in the USA. I like the extra cable length because I can run it through a side window on my van.

    Verified purchase: YesCondition: NewSold by: autocaredepot

  • by nokia6133
    Jun 11, 2025Top critical review

    suspect antenna

    I have purchased many mobile cb radio antennas over the years. this K40 antenna for some reason has no problem setting the swr but has the tendency increase the longer you talk on it. I switch swr meters, changed jumper coax and even used a double male connector from radio to meter and this issue persists. when I changed to a different mag mount antenna no more rising of the sir.

    Verified purchase: YesCondition: NewSold by: realcybersales

  • by 1732martins
    Jun 18, 2023

    Magnet Antenna

    great looking antenna, however mine was missing the tip on the metal Antenna. But not saying anthing bad about product. I think just quality control problem at factory

    Verified purchase: YesCondition: NewSold by: pricebreak-deals

  • by 55damac
    Jun 30, 2016

    IT'S K-40 , , ,Duh

    Started using K40 antennas when I first got into CB Radios in the late sixties. It was a real prestige thing to see a K40 on the base load mounted on a vehicle. And good reason why, they are excellent antennas. I see double K40s' on a lot trucks today which speaks for itself. When I ran tankers, I used them with a two Elkin amp and they perform well. I'm going to set this one up with a Midland rado and an electronic 100 amp in my car. Can't wait to set it up!

    Verified purchase: YesCondition: NewSold by: mygoods

  • by kwestfallaz2012
    Nov 20, 2023

    Great CB Antenna

    This is a great antenna, years ago I also had the K-40. Product looks of great quality and shipping was great.

    Verified purchase: YesCondition: NewSold by: autocaredepot

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