[GreenKeys] Filters

[JC White]

One of my ancient tube TUs uses filters made by Grant Story (forgot his call) who is probably now a silent key....  worked great on MARS nets in the late 70s and early 80s...  I may have a second set stashed away somewhere for 170 (2125 + 2295)... think they had octal plugs on the bottom to match a standard octal tube socket... will check and let you know.
JohnWB6BLV
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