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3 kwi 2019 · Using the keypad it is possible to enter frequencies and the loop will auto tune. But there is a problem. When testing the auto tune on the frequency range in steps from 7000khz through to 28000khz there is an intermittent fault.
Press the / for 3 seconds. Enter the tuning frequency in KHz and press ENTER. The display shows on the frequency set on the second line and the SWR measured in real time. You can operate the motor by pressing the 9 (to open) and 3 (to close) – HIGH SPEED.
At Ciro Mazzoni Radiocomunicazioni, we deeply care about our customers and we are happy to help you with any question about your LOOP Antenna. Here you can find and download for free the instruction manuals for every LOOP Antenna model.
1 paź 2021 · I just would like to bring the ATU-10 to your attention. 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.
25 paź 2022 · Loops are a brilliant solution when you have: QRM from local noise sources, limited space to deploy an antenna, or need a very low-impact and small footprint antenna (very handy for those historic and archeological POTA sites). The trade-off, of course, is that they have a high “Q”–meaning very, very narrow bandwidth.
The loop is tuned by opening and closing it with a Hywin linear actuator driven by an L298 integrated circuit H-bridge motor drive IC in the ATU. The antenna system can have three modes of operation.
How can you vastly improve your Medium Wave reception? its quite simple really, all you need is 120 foot of wire, a few lengths of timber and an old tuning capacitor with which you can build the answer to every DX’ers prayers, a tuned loop antenna.
