Ampleon has launched the ART2K5TPU LDMOS RF power transistor, offering a 2.5kW output and 1-400MHz frequency range, outperforming its predecessor with a higher supply voltage and better thermal performance due to lower thermal resistance. It includes dual integrated temperature sensors for improved protection, housed in Ampleon's OMP-1230-6F-2 package. Availability and pricing details are pending.

Icom has just announced the IC-905 SHF SDR transceiver that covers 144MHz, 430Mhz, 1.2GHz, 2.4GHz, 5.6GHz and (with the help of an optional module) 10GHz.

Icom ID-52 is the latest VHF/UHF D-Star color screen & Bluetooth handheld transceiver released by Icom, replacing the ID-51PLUS2.

This is an amazing hobby and has many sides to it, but as anything it’s far from perfect. A Twitter challenge by Ria N2RJ (@RiaJairam) made me think about what can be improved about Amateur Radio. What is Amateur Radio, really ? First of all, Amateur Radio is constantly changing, people are in it for […]

The B1500 RF amplifier Backpanel Unit is designed to sit between a LDMOS RF amplifier and the rest of your shack. It handles RX/TX switching, antenna selection and transceiver interfacing. It also has a clean, high-efficiency DC-DC converter that supplies 12V at a maximum of 3A for all the amplifier’s additional circuitry, display, relays and […]

The new Icom IC-705 should be available starting April 2020, with a MSRP of 124,800 yen + tax. As you probably know by now, the Icom IC-705 is a portable SDR transceiver that covers HF/VHF/UHF with a power output of up to 10W. The 4.3″ colour touchscreen display and novel features (for a HF radio) […]

This design offers a practical solution for HF/low-VHF amplifier output filters, handles 600W and is designed to cover all amateur bands form 160m to 4m. It is a necessary accessory for the 600W HF/VHF LDMOS linear amplifier in order to remove any harmonic products and make the amplifier legal to use on the air. Challenges For […]

For optimal performance, the heatsink should have a thermal resistance of 0.1C/W or better at full fan speed. For the prototype I used ABL Components 180AB1500B, it is available in many countries from RS Components. However, the thin anodised black layer had to be removed for better thermal contact transfer (although it improves heat transfer […]

I have recently made available a new version on the A600 amplifier based on MRF300 LDMOS transistors. Here is the list of changes and improvements that come with v2.0. 1. Redesigned and improved PCB All components are now on the top side, while the bottom side is a continuous ground plane in direct contact with […]

Update: this project is evolving. See this page for the latest version. Kits are available in the shop area. The announcement of the MRF300 and MRF101 transistors by NXP in 2018 has generated quite a spark of interest in the amateur radio community and as soon as I learned about them I wanted to get some […]

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.