Tag: HF

SEM-35

At my birthday party someone showed up with a awesome old radio. An old SEM-35 manpack radio. SEM-35 Specifications Frequency Coverage 26 to 69.95MHz Channels 880 spaced 50kHz Modulation F3 (FM) Deviation 15kHz max. Transmitter RF Output 150 mW or 1Watt Frequency Stability < + 3.5kHz from -40 to +600C Receiver Sensitivity < 0.5 micro…


45Watt HF Lineair

  I was looking around for a nice little kit to build to boost my HF power a bit from 5 watts to 25 watts. On the internet i ran in to a affordable little kit. [work in progress……..]