AD9851 + BFG591 LNA
Frequency response: SFDR: https://github.com/enthru/Arduino-AD9851-DDS-Direct-Digital-synthesizer-Signal-Generator
Метка: measurements
Lab (or pseudolab for DPS5015) PSUs 3.3v power-up
Small comparison.
1.5KW HF load SWR
Big HF load
It’s based on a copper plate, big old whipped aluminium radiator and two 100Ohm resistors, 800watt each.
Fully assembled power load
Big battery capacity:
Building 6Ah LiFePO4 battery
Received prebuilt battery and few elements: Big one is pretty heavy and overqualified for QRP 🙂 18Ah is enough to drive 100watt
Simple tests of electronic load and Xiaomi powerbank
Video (RU)
Home for HF load
It’s build from 250w 50Ohm resistors.
Finally got my clamp meter
Finally got the clamp. Some simple tests with DMMCheck+
Home for attenuator
Not the best look, because this box already has a holes, but result is pretty nice: