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...
Read More
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...
Read More
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...
Read More
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...
Read More
A600 v2.0 amplifier module – changes and improvements
I have recently made available a new version on the A600 amplifier based on MRF300 LDMOS...
Read More
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...
Read More
Icom IC-705 – considerations on RX power draw (wild guesses ahead)
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.
Read More
Icom IC-705 HF/VHF/UHF portable SDR transceiver – full details
IC-705 has just been unveiled by Icom at the Tokyo Ham Fair. This is a portable HF/VHF/UHF transceiver featuring SDR technology, internal battery, GPS, Bluetooth and D-STAR. Output power is 10W on external 13.8V supply or 5W on internal battery.
Read More
Yaesu FT3D – new flagship VHF/UHF handheld
Yaesu FT3D is the next flagship VHF/UHF handheld; features a full color touchscreen display, Bluetooth and many other goodies already present on the FT2D.
Read More
US regulator FCC to introduce digital modes practical test for amateur examinations
This article was an April Fool’s prank. In a proposal that aims to make new changes to the...
Read More
Red Pitaya STEMlab 122.88-16 for SDR transceivers
Red Pitaya have just introduced the STEMlab 122.88-16, an updated version of the STEMlab hardware aimed specifically at being used as a DDC/DUC HF/50MHz SDR transceiver.
Read More
Yaesu FT-4X review (it is after all a Baofeng)
Yaesu FT-4X is part of the new range of handhelds from Yaesu that attacks the concept of low-cost outdoor radios. Rugged casings, IP54 water protection and loud speakers are just some of the main common features
Read More
