Want to securely mount your mobile antenna to your vehicle without drilling? Then a magnetic mount is the ideal solution. But which one is best suited to your antenna and application? In this blog post, we'll explain step-by-step what to consider when choosing a magnetic mount. This way, you'll ensure optimal performance, safe use, and a stable connection—whether you're driving on the highway, taking an off-road trip, or communicating professionally.
1. The right connection: essential for a good match
You can choose a ready-made magnetic base antenna , which consists of an antenna with a magnetic base and a coaxial cable with a PL-259 (UHF male) connector that connects to the back of your 27MC transceiver. If you choose a separate antenna that you want to mount on a magnetic base, first check the antenna's connection. There may be various connections, such as:
- DV (S-connector): Compact and rotatable, ideal for many mobile antennas. Examples of models: Sirio MAG 145 S , Sirio MAG H12-S
- 3/8" connector: Rugged and versatile, often used with 27MC and UHF/VHF/HF antennas. Example models: Sirio MAG 145 3/8" and K-PO triple 3/8"
- PL (UHF-Female): Popular with 27MHz users, this antenna fits a PL (UHF-Male) antenna. Examples of models: Sirio MAG 145 PL , Komunica Triple magnetic base
- BNC: Connector suitable for short scanner and 27MC antennas and other compact antennas. Examples of models: Komunica BK-600 BNC, Diamond MCR-M
- SMA: Compact connector for lightweight antennas such as: Diamond MCR-M SMA
- N-connector : Sturdy and professional for heavier and longer antennas. Example model: Diamond DPK-4NM-N
-
No connection: This can be customized with a connection type and coaxial cable. Example model: Diamond K-3000
Overview of magnetic foot connections
2. Size of the magnetic base – stability above all
The longer your antenna, the larger the diameter of the magnetic base must be. A larger diameter ensures:
- Better grip on the vehicle
- Less movement in strong winds or high speeds
- Less risk of loosening
For long antennas or professional use, a triple magnet base is a smart choice: three magnets for maximum stability.
Triple magnetic base with 3/8 connection
3. Good base (mass) = performance
An antenna only works effectively when it's placed on a highly conductive metal surface. This surface acts as the antenna's counterpart (ground), just as radials do for fixed antennas. Consider:
- A flat metal car roof
- No protruding parts or obstacles around it
If necessary, use a grounding sheet (mass mat) such as the Diamond MAT-50 or the Komunica HF-MAG for extra mass on difficult surfaces.
Diamond MAT-50 grounding sheet for extra mass
4. The ideal mounting position
The location where you mount the magnetic base on the vehicle makes a big difference:
- In the middle of the roof: best performance and radiation pattern
- On the side: worse range towards the opposite side
- Rear or low: chance of signal loss due to blocking
5. Common concerns about magnetic feet
We often hear doubts like, "Won't it come off? Will it scratch my paint? Will it create a mass?" The answer:
- With a properly positioned magnetic base, the risk of damage and scratches is minimal
- Clean surface and magnet before mounting
Tips
Still worried about scratches? Use a suitable rubber mat with a larger diameter than the magnetic base to place between the car body and the magnetic base instead of the standard protective rubber included.
If you want to remove the magnetic base, be patient and take your time and space. You can use a thick piece of plastic card and move the antenna using a twist, slide, and wedge method, inserting the card a little further each time. This card must be thick enough that the magnet no longer adheres properly to the car body once it's between the car body and the magnetic base. It's best to test this with different thicknesses of card before inserting the magnetic base.
6. Accessories and tips for optimal use
Grounding kit
Accessories such as magnetic ground mats offer a practical solution for increasing a vehicle's surface area and creating a reliable ground. A prime example is the Diamond MAT-50 : an innovative, magnetic grounding sheet specifically designed for vehicles where creating a good ground is challenging. This magnetic sheet is ideal for mounting mobile HF antennas. Simply place the MAT-50 on a flat metal surface and connect the included cable to the antenna base – instantly creating a stable and effective ground.
Magnetic base antenna with two grounding mats (grounding kits)
7. Alternatives to magnetic feet
Versatile antenna brackets for any vehicle
Not every vehicle is suitable for a magnetic mount, which is why Deltron offers a wide range of antenna mounts as a flexible alternative. These mounts are specifically designed for easy mounting to various parts of the vehicle, such as the trunk edge, roof racks, roof rails, trunk racks, exterior mirrors, fender flares, or even the spare tire carrier. This versatility ensures a suitable mounting solution, regardless of the vehicle type or operating environment.
- Brackets for roof racks and/or roof rails
- Trunk and fender brackets
- Mirror brackets
- Antenna brackets for spare wheel holder (4x4 and off-road)
- And more!
Antenna mount with clip mount
A smart alternative to mobile antenna mounting is the clip mount, such as the Diamond MCR-II SMA . This clip mount is ideal for those looking for a flexible and reliable antenna setup. It's perfect for mobile communications, amateur radio, and other situations where a stable antenna is essential.
Antenna holder with suction cup
The Comet CSC-140J is a versatile antenna mount with a strong suction cup, ideal for mounting an SMA antenna on windows or other smooth surfaces. Its flexible 13.5cm arm allows you to precisely position the antenna for optimal reception. The included 3-meter low-loss coaxial cable guarantees excellent signal quality.
The right magnetic base makes the difference
Whether you're on the road for work, participating in an organized tour, or simply enjoy experimenting with communication equipment, a good magnetic base ensures better performance, less worries, and more fun. Check your connection, choose the correct diameter, mount it on a flat metal surface, and consider accessories for the best results. Want to know which mobile 27MC antennas are popular? Read our blog post " The 10 best mobile 27MHz antennas of the moment ." Want to know everything about adjusting the SWR? Our blog post " Antenna Adjustment: Facts and Myths " explains how to do it and what you need. And for the ideal position of your mobile antenna, we recommend our blog post " The correct position for a mobile 27MC antenna on your vehicle ."
Curious which magnetic base best suits your needs? Browse our extensive range at Deltron.nl or contact us for personalized advice.
