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What is this?

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Author Topic: What is this?  (Read 353 times)
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Posts: 35

« on: January 07, 2019, 12:26:47 PM »

I know itís a tuner network but who made it and what was it used in ? Anyone with any info?

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Posts: 370

« Reply #1 on: January 07, 2019, 02:41:25 PM »

it's a National MB-20 multi-band tank...it predates the MB-40L (fixed link) and MB-40SL (swinging link) units whose manual you can find in the Tech section of the AMWindow here. I believe that the MB20 and the MB40L (fixed link) are electrically identical.
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