Four kinds of GMRS antennas
| Type | Where it goes | What it does |
|---|---|---|
| Stock "rubber duck" | On the handheld | Short and tough, but the weakest |
| Long whip (15–18 in) | On the handheld | Noticeably better range, still portable |
| Magnet-mount | Truck roof | Uses the metal roof as a ground plane; big gain over a handheld inside a cab |
| Base antenna (J-pole or similar) | Mast or roofline | Highest and best; the backbone at the ranch |
Getting it right
Match the connector
UV-5G Plus takes SMA-female antennas; check before ordering
Mount it high
Every foot of height helps more than extra watts
Keep cable short
Long, thin coax wastes signal; use quality low-loss cable
Never transmit without it
Talking with no antenna attached can damage the radio
Source: True Prepper: Best GMRS radios
Inside a vehicle
Handheld in the cab
- Metal body blocks much of the signal
- Range can drop by half or more
- Hold it near a window at least
Roof antenna outside
- Signal goes out in every direction
- Pair with a mobile radio up to 50 W
- Best upgrade for the drive to the ranch
Remember
A $25 antenna placed high often beats a $200 radio placed low.
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Answer key
- Which antenna is usually the weakest?The stock "rubber duck" on a handheldThe short stock antenna is tough but the least effective.
- The UV-5G Plus takes which antenna connector?SMA-femaleCheck the connector before buying; the UV-5G Plus uses SMA-female antennas.
- Why use a roof antenna on a truck?The metal cab blocks much of a handheld's signalA handheld inside the cab can lose half its range or more.
- What should you never do?Transmit with no antenna attachedTransmitting without an antenna can damage the radio.
- Which is the best single upgrade for the ranch?A base antenna on a tall mastA high base antenna is the backbone of family range.