18-09-2019, 07:25 PM
(This post was last modified: 18-09-2019, 07:34 PM by Mike Watterson.)
Yes, valve transmitters, even legal Amateur ones can use even more than 1kV.
The FT101ZD family replacement kit uses 2 x 500V in series, though I'd thought HT is only about 600V. About 80W to 100W using 2 x 6146 in Class A in parallel. 1KW PAs can be legal and use very much higher voltages.
Edit:
The FT101ZD allegedly uses a voltage doubler to get about 900V from a 240 - 0 - 240 winding, though I thought the HT was less than that on the 6146 anodes. The PA lives in a perforated metal cage and dies horribly if the grid bias fails. A DAC90a with leaky grid cap can't compare.
The FT101ZD family replacement kit uses 2 x 500V in series, though I'd thought HT is only about 600V. About 80W to 100W using 2 x 6146 in Class A in parallel. 1KW PAs can be legal and use very much higher voltages.
Edit:
The FT101ZD allegedly uses a voltage doubler to get about 900V from a 240 - 0 - 240 winding, though I thought the HT was less than that on the 6146 anodes. The PA lives in a perforated metal cage and dies horribly if the grid bias fails. A DAC90a with leaky grid cap can't compare.
