juan carlos bonadero wrote:
>
>Hello
>
>I had a power transformer with all the secondaries together ( including
>filaments) for a tetrode (4CX400). Can I put all voltages in the start,
>with screen in 0 volts, and 30 seconds later full voltage?
>
The tube data sheet says you can, although when I tried it, the cathode
still seemed to be warming up after 60 seconds.
73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.com/g3sek
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