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Hello, rooco team.
You have written about the differences between different volt converters. Unfortunately everything without type designation. Can you already give a recommendation for a converter?
You wrote that it is often due to the price, this is a hint but not enough for me.
Is there an optical hint on a circuit board, for example certain components which point to little noise?
Which converter works best after your tests?
Greetings Jürgen
Hello, rooco team,
Unfortunately my question could not be answered yet. Please give me a buy recommendation.
Apart from the converters, does it help to minimize the noise with ferrite cores?
Greetings Jürgen
Hello Jürgen,
it is not that easy to give a recommendation for a converter, as noise is caused by several parts in the power supply chain. This might be the power source of your ship, the converter or the Pi itself. Even if you use a low noise converter you might have some reception degradation, if your ship supply is too noisy. However, I would recommend a converter using the LM2596. I use the following part: https://www.neuhold-elektronik.at/catshop/product_info.php?cPath=222_361&products_id=4763
All your systems are powered with a lead acid battery, so no noise from an electric generator. In this combination you wont have any troubles with excessive noise.
Things you could do to improve performance:
- Use low-noise and high-quality converters –> do not use cheap China converters
- Mount the antenna as high as possible above sea level
- Avoid noisy sources next to the receiver (e.g. Wi-Fi router, smartphone, microwave, radio equipment etc.)
- Use AIS antennas only –> the antenna MUST be specified for the AIS frequency only
- Keep antenna cables as short as possible and use low-loss cables
- Only use shielded antenna cables
- Place AIS antenna as far away as possible from other radio equipment
- Use ferrite beads on all power supply cables
- Avoid ground loops
Regards
Thomas
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Hi, I also have trouble finding a low noise 12v to 5v step-down.
AIS reception with my power supplies is poor even the voltage is stable (at least on my multimeter). If somebody found a well working ps please share.