LF 4 Features

- Screw type 6 inch antenna for all frequencies
- Compact and rugged design
- Low battery detection and indication
- Micro controlled operation
- Magnet tap on/off function
- High output power
- Long battery life
- 1/3N battery

The LF-4 transmitter is the newest addition to the LL Electronics lineup. These transmitters have superb output equaling much larger models and on a short 6 inch antenna! LF-4 outranges the XLF 6V with a full length antenna and outlasts it by at least 4-5 days. The LF-4 also boasts microchip controlled operation, giving it a crisper, cleaner signal which translates to more range in the field. Micro controllers also allow for low battery detection and indication as well as magnet tap on/off functionality. The LF-4 runs on the ultra reliable, high power and easy to find 1/3 N lithium battery. This battery provides around 2 weeks of life in continuous operation.

Introductory Price:
$175

About the short antenna: The method of shortening an antenna is no secret to radio technology and certainly isn't a revolutionary discovery. It is achieved through antenna loading, a technique that even Nikola Tesla appeared to have used as early as 1891. This involves placing a coil at some point in the antenna (usually the base) to match the lost length by electrically lengthening the antenna.

We have designed our antennas for an even shorter overall length while maintaining a high output. Not only are they a miniscule 6 inches long, but they are 6 inches for any frequency! Including 173 MHz! And these antennas are still field replaceable screw types built on a standard screw size.