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Http://www.g4ddk.com /VLNASept13.pdf

VLNASept13.pdf

🔗 Source: g4ddk.com

📊 Size: 2.1 MB

👤 Author: Sam

⬇️ Downloads: 47

Summary

The VLNA is a Very Low Noise (pre)-Amplifier designed for the UHF 70cm to 9cm bands, with four versions covering the main amateur radio UHF bands. The amplifier has undergone several upgrades, with the current version featuring a noise figure of <0.4dB at 70cm, <0.3dB at 23cm and 13cm, and <0.5dB at 9cm, with gains of 40dB, 37.5dB, 29dB, and 27dB respectively. The circuit uses a low noise Mitsubishi MGF4919G HEMT in the front end and an Avago ATF54143 in the second stage, with alternative components used in some versions. The amplifier is designed for high stability and low noise figure, making it suitable for demanding applications such as EME systems.

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Description

The VLNA is a Very Low Noise (pre)-Amplifier designed for the UHF 70cm to 9cm bands, with four versions covering the main amateur radio UHF bands.

Technical Information

File Format: PDF
File Size: 2.1 MB
Pages: 32
Language: EN
Author: Sam
Total Downloads: 47
Last Updated: 1 month ago

Document Overview

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