Cross Country Wireless VHF/UHF Masthead Amplifier
The VHF/UHF Masthead Amplifier is a low noise RF amplifier designed to be mounted directly at the antenna so that signal amplification is made before losses are incurred in the coaxial feeder cable. This give an improved signal to noise performance especially with long cable runs.
The amplifier consists of two units, a weatherproofed outdoor head unit for connection to a suitable antenna and a bias tee unit to provide DC power up the coaxial cable to the outdoor unit.
The outdoor unit is housed in a polycarbonate box with a N type female connector for the antenna and a BNC socket.
Like our other active antenna products it has RF overload protection to allow it to be used very close to transmit antennas without damaging the amplifier or the attached receiver.
The amplifier can also be powered using recent versions of our Multicoupler with the built in switched 5 V bias tee feed.
Early versions up to 2025 were powered by 13.8 V up the feeder cable.
All amplifiers produced in 2026 are now powered by 4 to 5 V up the feeder cable.
This brings the amplifier in line with out other active antennas that can be powered by our Multicoupler or the bias tee in SDRPlay receivers.
Specifications:
Frequency range : 45 MHz to 650 MHz
Output impedance: 50 ohms
OIP3: >+40 dBm
Gain: 14 dB +/- 3 dB 45 to 650 MHz
Noise figure: 0.7 dB
Supply voltage (head unit) EARLY PRODUCTION up to 2025: 12 to 14.5 V from a bias-tee feed via the coaxial cable
Supply voltage (head unit) 2024 PRODUCTION: 4 to 5 V from a bias-tee feed via the coaxial cable
Supply current (head unit fed with 5 V from bias-tee): 100 mA
Outdoor unit connectors: N type female (RF in 50 ohms) and BNC female (RF out 50 ohms)
We use eBay for our individual customers as they look after the import tax and fees involved in international transactions.
The eBay listing for the VHF/UHF Masthead Amplifier is here.
If the eBay listing is sold out we have a regular stock situation post on the Cross Country Wireless Groups.IO forum..
We also announce new batches of our products on the Groups.IO forum.
For our professional and commercial customers we now have a Wise.com account so we can accept bank transfers in local currencies worldwide.
Contact us for a quotation.
Contact Chris Moulding via info@crosscountrywireless.net