[Heathkit] HP23A help

[Glen Zook]

What tube / tubes are used in the final amplifier stage?  Most tubes used in the final stage of amateur radio transmitters that can handle 600-volts can handle the higher voltage from the Heath power supply without any problems.  Under load the voltage should drop to between 700-volts and 750-volts.
 Glen, K9STH 
Website: http://k9sth.net

      From: Bry Carling <af4k at hotmail.com>
 To: "heathkit at yahoogroups.com" <heathkit at yahoogroups.com> 
Cc: FL Boatanchors <flboatanchors at yahoogroups.com>; NRR NRR <novicerigroundup at yahoogroups.com>; "heathkit-radios at yahoogroups.com" <heathkit-radios at yahoogroups.com>; "heathkit at mailman.qth.net" <heathkit at mailman.qth.net>
 Sent: Friday, September 23, 2016 10:08 AM
 Subject: [Heathkit] HP23A help
   
I have acquired an old HP23A that was upgraded professionally to become an HP23D

I was hoping to use this with my Millen and WRL rigs that require 600V B plus.

Unfortunately the Heathkit PSU supplies 815V DC no load!

Any ideas on how I can reduce this without reducing the 12V DC filament supply?