An HF Low Band Amplifer
Operator identity - confidential! 
It's a bit rough around the edges, but has run for 15+ years with only
two small faults ... a burnt output relay due to VOX operation and
a blown HT rectifier stack after some moths shorted the HT line.
The HT can supply 5kV at >1.2 Amps ... I'll let you do the maths!!
