different between vlf vs vhf

vlf

vlf From the web:

• what is vlf testing
• what is vlf in sql server
• what is vlf dmv
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• what does vlf stand for

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vhf

vhf From the web:

• what vhf frequencies can i use
• what vhf channel is used for distress call
• what vhf channel is weather
• what vhf channel should i use
• what vhf radio to buy
• what vhf channel do marinas use
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• what vhf channel for radio check