[Heathkit] HP23A help

[Glen Zook]

The 6DQ6 is rated at 770-volts continuous duty and the 807 at 750-volts under load.


Remember, the 6DQ6 was used as the horizontal output tube in a lot of tube-type television sets and ran for a goodly amount of time every day.


Both tubes should be able to take the 815-volts when in standby.  Also, when the power supply is actually supplying current to the lower stages of the transmitter, the B++ (815-volts) will drop a bit due to the load on the transmitter primary.

 Glen, K9STH 
Website: http://k9sth.net

      From: Bry Carling <af4k at hotmail.com>
 To: Glen Zook <gzook at yahoo.com>; Heathkit Yahoo <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 3:30 PM
 Subject: RE: [Heathkit] HP23A help
   
#yiv7131294865 #yiv7131294865 --.yiv7131294865hmmessage P{margin:0px;padding:0px;}#yiv7131294865 body.yiv7131294865hmmessage{font-size:12pt;font-family:Calibri;}#yiv7131294865 Thank you Glen,

A pair of 6DQ6B tubes is use din one rig. An 807 is used in the other.

Do I really want 815V DC on the plates when un-keyed?