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.

WinRadio products are available only to customers in the U.S. and Canada.

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