20-dB (adjustable) gain from 30-1000 MHz.
Improved reception for scanners with the Close Call function.
BNC connectors allow the unit to be mounted between the scanner and the antenna.

Bob's Pick...
RAMSEY WIDEBAND PREAMP: Here's a very popular accessory to bring in those weak, distant scanner signals!

If your scanner reception needs a little boost, this is the preamp to do it! Providing high gain at low noise, and operating continuously over 1 GHZ of spectrum, this signal booster can really make a difference in weak signal areas!

Boost weak signals and reject out-of-band interference and images from 1.8-54 MHz. Boost weak signals up to 20 dB with low-noise MOSFET and bipolar transistors.

The WR-LNA-3500 Low Noise Amplifier is a ultra-low noise figure preamplifier designed to operate in the range of 30-3500 MHz. While it is ideally suited to WiNRADiO VHF/UHF receivers, it can be also used to improve sensitivity of most third party receivers.

For the discriminating scanner user who needs the best possible weak-signal amplification without amplifying the noise as well, this tiny (1” square) preamp fills the bill!

The LN4000 offers 20 dB (typical) signal amplification from 100-4000 MHz (-3 dB), at a low noise figure of only 4.5 dB.

Adjust this attenuator in your antenna line to reduce nearby strong-signal interference on. Reduces all signals from DC-1000 MHz from 0 to 20 dB! Two F connectors provide convenient coax attachment