QSK for the TL-922 and SB-220 mods
- Beautifully constructed amplifiers. Unfortunately, are not suited for high speed T-R switching, a necessary attribute for operating AMTOR, QSK-CW, or SSB-VOX modes.
Base-Station RF Power-Amplifier Biasing
- Poweramplifiers used in base stations require biasing for proper RF performance. This article explains the two classes of biasing that are prevalent in the RF industry, analyzes their characteristics, and shows implementations with existing ICs.
- LZ2US offers 3 types amplifiers for the serious VHF/UHF amateur. These amplifiers are very robust and in use by contest groups and EME stations all over the world. Every amplifier is custom made.