[Milsurplus] Need settings for OA3 and OD3 tubes for my Simpson 600 tester

[Doug Hensley]

My 600 tube list shows an 0A4 and under that setting some new 0A3's test low but

test.  I have nothing similar to the 0D3 on the chart.


Any ideas or past notes that might assist?


Thank you,


Doug W5JV






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