IN3OTD's web site

...under perpetual construction.

• Home
• Electronics
• Amateur radio
  • RF power amplifiers
  • RF preamplifiers
    • 2N5109 push-pull HF preamp
  • RF dummy loads
  • Transformers for low-bands antennas
  • Directional couplers
  • Power splitters/combiners
  • Hermes-Lite SDR
  • Coaxial relays
  • Common-mode chokes for antennas
  • SKY13374-397LF RF switch at HF
  • Cheap 144 MHz / 28 MHz transverter
• From the bench...
• Programs
• Pictures

Amateur radio HF preamplifiers

Here are some data about RX preamplifiers, mainly for the HF bands, that I have built and characterized.

Push-pull HF preamplifier with 2 x 2N5109

Measurements on a push-pull preamplifier for the HF bands with good IMD characteristics.

© 2000-2015 Claudio Girardi, [email protected]

Created: Sat Dec 27 16:53:33 CET 2014
Last modified: Sat Jul 6 11:26:46 CEST 2019