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box style shadow meter and magnetism woes
Tynwald
Junior Member
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Posts: 14
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Joined: May 2021
City: Kalama State, Province, Country: WA
#11

04-30-2023, 07:47 PM
So, I swapped out the 6A7 with 8 other ones I had on hand…no change. I then subbed both 39/44’s (and what the heck, the 75 as well) and now get deflection of the vane when on station. Not as much as I expected, but it definitely moves. So that’s good. Now my question is about the lamp. I put a #47 in but with the little plastic (?) window in place (I was watching the vane move with it removed) nothing shows through. My understanding is that the lamp and its placement is critical for this to work. Any suggestions?

Jon
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RE: box style shadow meter and magnetism woes - by Tynwald - 04-30-2023, 07:47 PM



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  1. The PHILCO Phorum
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