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1 paź 2021 · David N7DDC has released a new version of his ATU-100 as a low-power consumption and 10 W QRP version of his popular autotuner. The design is focused on low power consumption during operation. Latching relay are used make this happen.
New in FW version 1.6. 1 - New better meassurement formula for Power and SWR calculation, compensation and calibration. 2 - Setting by Cells control implementation. There are 10 cells you can find opening a FW .hex file in Notepad++ program as Intel HEX file.
The QRP Manual Tuner appears to be the combination a few pieces of work, some that are possible to locate on the Internet. SWR Indicator Circuit - Dan Tayloe N7VE LED SWR indicator T-NetworkTuner - http://www.arrl.org/files/file/Technology/tis/info/pdf/9501046.pdf
The ZM-2 ATU is a simple manual antenna tuner that you can purchase either as a fun-to-build kit or fully assembled and tested. I’ve owned my ZM-2 for many years, and I believe every QRP field operator should have one.
Basic multi-z antenna tuner for QRP. Easy to tune low-z and high-z antennas. This is just an experiment while testing it with my 40m EFHW antenna.
This homebrewed antenna tuning unit also incorporates a 50-ohm QRP dummy load, power meter (1 or 10 Watts full scale), and SWR meter. Switched inductor L match tuner. A 10 to 80 meters band qrp antenna tuner by KC8AON, based on Steve Weber, KD1JV "ALT or Altoids L Tuner". Short Whip Antenna Tuner.
12 lip 2022 · A quick list of ATU-10 Features: 0.91″ OLED Display that shows Power, SWR and internal battery remaining. USB-C Rechargeable LiPo 1.7Ah. Grounding Lug. Bypass Mode (When I set to this mode however it would tune anyways) Latching Relays (No power needed to keep in position. Hold tune with ATU off)
