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JG ULNA70VOX 430 MHz UHF Coaxial Preamplifier - VOX 100W with very low NF

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Description

UHF 70 cm Preamplifier: The Ultimate Upgrade for Your Ham Radio Station

Maximize your performance on 70 cm with the innovative technology you've been searching for. Get ready to discover a new level of reception!


Unmatched Performance, Simple Installation

Forget compromises and superfluous cables! Our UHF preamplifier is designed to elevate your experience in the 70 cm band, operating flawlessly from 420 to 450 MHz. This technological gem not only integrates an advanced VOX circuit but also includes on-board coaxial relays, completely eliminating the need for external accessories. Yes, you read that right: it's ready to handle up to 100W right out of the box, without complications!

Thanks to the integrated notch filter (ANTI LTE), precisely tuned at 900MHz, annoying LTE interference will no longer be an issue. Designed for excellence, it is the perfect choice for satellite, contest, tropo, and EME use, offering a typical low noise figure of only 0.50dB across the entire operating range. If you're looking for high-intensity use with high performance, setup is a breeze: just connect the PRE between your radio and the antenna. Do you have specific needs? Operation on other frequencies is available upon request!


Technology and Robust Made in Italy Construction

Crafted with a 4-layer PCB, this cutting-edge preamplifier boasts an integrated VOX circuit, coaxial relays, and an integrated bias tee. It handles up to 100W safely, with immediate and reliable automatic TX to RX switching. It is an INNOVATIVE Ultra Low Noise UHF Preamplifier, with a typical low noise figure of only 0.80dB (with active coaxial relay) from 420 to 450 MHz.

The integrated input notch filter ensures extraordinary attenuation of approximately 40 dB against 900MHz LTE frequencies, guaranteeing you a clean and interference-free signal. The robust cylindrical structure is made in our facility from anticorodal aluminum, ensuring not only exceptional durability but also consistent performance over time. For maximum versatility, you can power it via the feedthrough capacitor or, even more conveniently, via BIAS TEE with a voltage from 9 to 15V and a maximum current draw of only 137mA.


The Strengths That Make a Difference:

  • On-board coaxial relays for up to 100W pass-through: maximum performance without compromise.
  • INTEGRATED VOX circuit: automatic and intelligent switching.
  • Can be powered via Bias tees with voltage from 9 to 15V: flexible and simplified installation.
  • Low noise figure from 420 to 450 MHz (typ. 0.80dB): to pick up even the weakest signals.
  • Bandpass filter and 900MHz input notch filter (ANTI LTE): guaranteed signal purity.

High-Quality Connectors, Details That Matter

Our connectors are custom-made to our specifications, with Teflon dielectric to guarantee you the highest quality, durability, and optimal performance over time. Choose the perfect combination for your setup:

  • N male / N female
  • N female / N female
  • N male / N male

Robust Construction: Designed for Durability

  • ? Cylindrical structure made of 6060 anticorodal aluminum alloy.
  • ? All fastening hardware is strictly INOX (stainless steel), for unparalleled resistance to weather and time.

Detailed Technical Specifications:

  • Supply voltage: 9-13.8V
  • Max Input power: 100W
  • Minimum VOX switching power: 500mW
  • Current: 137mA
  • Impedance: 50 Ohm
  • Gain: +22dB
  • OIP3: +29dBm
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Via Colle di Sora II, 15 - 03030 Campoli Appennino (FR)

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JG ULNA70VOX Preamplificatore coassiale 430 MHz UHF - VOX 100W a bassissima NF
JG ULNA70VOX 430 MHz UHF Coaxial Preamplifier - VOX 100W with very low NF

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For over 15 years, by the side of radio amateurs

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