[TowerTalk] Running 3-500Z in horizontal position

Bert ve3nr at bell.net
Thu Oct 8 15:38:45 EDT 2020


I'm working on restoring a SB-220 and need to have the amp on the side
in order to get access for measurements.

Would I damage the 3-500Zs running them in a horizontal position for a
short while testing and troubleshooting the amp? Sagging filament, causing
short, etc. Specs says vertical, base down or up! Thanks!

Bert VE3NR



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