Category: In the shack

A 600W broadband HF amplifier using affordable LDM...

Posted by Razvan | Oct 27, 2019 | In the shack | 106 |

What’s wrong with ham radio

by Razvan | Jul 15, 2020 | In the shack | 70 |

This is an amazing hobby and has many sides to it, but as anything it’s far from perfect. A...

B1500 – Backpanel Unit for RF power Amplifiers

by Razvan | Mar 29, 2020 | In the shack | 2 |

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

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

by Razvan | Dec 16, 2019 | In the shack | 11 |

This design offers a practical solution for HF/low-VHF amplifier output filters, handles 600W and...

Choosing a heatsink for the A600 LDMOS linear amplifier

by Razvan | Dec 11, 2019 | In the shack | 1 |

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

A600 v2.0 amplifier module – changes and improvements

by Razvan | Dec 9, 2019 | In the shack | 17 |

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

A 600W broadband HF amplifier using affordable LDMOS devices

by Razvan | Oct 27, 2019 | In the shack | 106 |

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

Icom IC-705 – considerations on RX power draw (wild guesses ahead)

by Razvan | Sep 2, 2019 | In the shack | 4 |

I’ll try to put together a breakdown of IC-7300’s sections and how much power those use and try to see how Icom could’ve tweaked those to make the architecture “portable” for the IC-705.

ADE-1-24 mixer

by Razvan | Jun 8, 2018 | In the shack | 5 |

ADE-1-24 are double-balanced RF mixers that can be easily found all over eBay, Aliexpress and...

Yaesu FT-757GX – fixing some common faults

by Razvan | Nov 9, 2017 | In the shack | 18 |

I recently got a Yaesu FT-757GX to use as a backup radio for the shack. The previous owner said it...

3 years later

by Razvan | Mar 28, 2016 | In the shack | 2 |

I started this blog 3 years ago, a few months after I got my first amateur radio license and about...

Yaesu FT-817, Elecraft KX-3 and other portable HF radios

by Razvan | Dec 20, 2015 | In the shack | 7 |

I don’t know about other people out there, but I use this blog as a personal journal,...

About the Elecraft K3 vs Kenwood TS-590 debate

by Razvan | Jan 14, 2015 | In the shack | 0 |

I was just reading earlier Simone IW5EDI’s article about a short overview on the K3 and the...

Products

F1500 160m-4m 1500W Low Pass Filter kit £259.00
B1500 RF Amplifier Backpanel Unit kit £109.00
A600 HF/VHF 600W Linear Amplifier Kit
Rated 5.00 out of 5
£189.00 – £319.00

Category: In the shack

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