Laird Technologies 136-174 Wideband 20ft Antenna Spring - VHF Mobile

Our review of the Laird Technologies 136-174 Wideband Antenna Spring focuses on practical VHF mobile use. This compact 19.5 in whip is aimed at radio users who need a rugged, no-fuss antenna that covers 136-174 MHz without tuning. The single biggest reason to buy is simplicity: a unity gain wideband design that handles up to 100 watts and mounts with a spring to survive vehicle use, making it a dependable choice for field technicians, ham operators using VHF, and fleet radios that require reliable mobile reception.

Key Features

• Wideband coverage: The 136-174 MHz frequency range provides broad VHF reception so one antenna works across standard VHF channels without retuning.
• Unity gain design: The antenna offers neutral gain characteristics that preserve signal stability for typical mobile radio communications.
• Durable whip length: The 19.5 in whip balances performance and clearance for vehicle mounting in urban and rural settings.
• High power handling: Rated for up to 100 watts, it supports most mobile transceivers used in commercial and amateur applications.
• Spring mounting: The included spring helps protect the antenna and mount from impacts and flex during driving.
• Manufacturer warranty: A 1 year warranty provides basic protection against defects for peace of mind.

Who It's For

The antenna is best suited for users who need a straightforward, reliable VHF mobile antenna: ham radio operators on 2m band segments within 136-174 MHz, service vehicles that require a rugged mount, or anyone who wants a unity gain antenna that requires no tuning. Installers who value a spring-loaded whip for collision protection will appreciate its practical design.

It is not aimed at users seeking high-gain or specialized narrowband performance for contest-level amateur use or those needing HF coverage. If you require amplified signal gain or frequencies outside the 136-174 MHz range, consider a different antenna tailored to that purpose.

Pros & Cons

Pros

• Broad 136-174 MHz coverage means one antenna serves multiple VHF channels without retuning.
• 100 watt maximum power rating supports common mobile transceivers used in commercial and amateur setups.
• Spring-mounted whip and 19.5 in length deliver a good balance of protection and vehicle clearance for daily use.
• Unity gain design offers stable, predictable performance for mobile communications.

Cons

• Unity gain means no amplification; users needing extra range must choose a higher-gain option.
• Not suitable for frequencies outside the stated 136-174 MHz range.

Specifications

Brand	Laird Technologies
Frequency (MHz)	136-174
Maximum Power (Watts)	100
Whip Length	19.5 in
Gain	Unity
Mfg. Warranty	1 Year

Our Verdict

The Laird Technologies 136-174 wideband spring antenna is a solid value for mobile VHF users who want a no-nonsense, durable antenna that requires no tuning and handles up to 100 watts. It is especially useful for field technicians, fleet vehicles, and radio hobbyists who prioritize reliability and simple installation over extra gain or multi-band coverage.

Frequently Asked Questions

Does this antenna need tuning?
No. The antenna is a wideband unity gain design and requires no tuning across the 136-174 MHz range.

Can it handle high power mobile radios?
Yes. The antenna is rated for a maximum of 100 watts, suitable for most mobile transceivers.

Is the spring mount good for vehicle use?
Yes. The spring helps protect the whip and mount from impacts and flex during normal driving conditions.