[AMPS] Blue Flashes from SB-200

[Phil Clements]

Subject: [AMPS] Blue Flashes from SB-200



> Whenever I key the SB-200 with my transceiver, I see
> varying degrees of blue flashes on both 572B tubes.
> At very low drive levels (10W), I see a blue tint on two
> sides of both tubes.  At high drive levels, blue flashes
> actually jump through the top of the SB-200 chassis,
> providing for quite a light show.

What are your plate current, grid current, and plate voltage
doing during these "events?" Are they steady, or erratic?
What is your resting plate current? (keyed up, but no drive)

(((73)))
Phil, K5PC




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