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gbrio For maximum power, it takes a 24V 8A If you don't need the maximum power, 12V 5A may be enough which is more common

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gbrio It does not need an external antenna, but if you want to increase the sensitivity and know how to solder you can follow this thread. Sensitivity doubles. Look for this tread on RCGROUPS Miniature-cheap-Lantian-2-4ghz-band-scanner

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gbrio No. However, it is better to clean and lubricate the guides again, the lubricant they use is bad.

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