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B1500 – Backpanel Unit for RF power Amplifiers

The B1500 RF amplifier Backpanel Unit is designed to sit between a LDMOS RF amplifier and the rest of your…

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Icom IC-705 coming in April 2020, price announced

The new Icom IC-705 should be available starting April 2020, with a MSRP of 124,800 yen + tax. As you…

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F600 – a 600W low-pass filter board for 1.8-72MHz

This design offers a practical solution for HF/low-VHF amplifier output filters, handles 600W and is designed to cover all amateur…

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Choosing a heatsink for the A600 LDMOS linear amplifier

For optimal performance, the heatsink should have a thermal resistance of 0.1C/W or better at full fan speed. For the…

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A600 v2.0 amplifier module – changes and improvements

I have recently made available a new version on the A600 amplifier based on MRF300 LDMOS transistors. Here is the…

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A 600W broadband HF amplifier using affordable LDMOS devices

Update: this project is evolving. See this page for the latest version. Kits are available in the shop area. The…

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