Ik heb een contract gemaakt pijpleiding club Would anybody know what the knob in the middle of this meter does? I was given one like this by a friend but not sure how to operate it. Thanks for the
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Verbinding vos Nautisch vermogen meten met swr meter - Forum - Circuits Online
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Cirkel perzik Executie Vintage Monarch FSI-5 Combination SWR and Field Strength Meter Made in Japan NOS | eBay