[Amps] 3CX1000A7 and larger

[John Lyles]

Do you mean no commercial amateur amplifiers? Today I tested my new tetrode amplifier to 735 kW peak with 1 mS long pulses, 60 per second. Average power was about 45 kW, at 198 MHz. That's VHF. 
Its only 2 tubes, a driver and final. Everything is turned back right now, still doing high voltage testing before shoveling on the duty factor to raise the average (CW equivalent) power. 
Have had plenty of birthing pains the past month, screen supplies that went south, filament supply that wouldn't cooperate, parasites that wouldn't shut up.... I haven't had much time to pay attention 
to whats on this forum.  But everything is working better, and this is what it takes to bring up a new rig of this size. 

John 
K5PRO






> Date: Tue, 16 Nov 2010 14:38:19 -0600
> From: "Its from KE4VYN" <ke4vyn at msn.com>
> Subject: Re: [Amps] 3CX1000A7
> To: <amps at contesting.com>
> Message-ID: <SNT104-DS226D5881283CE27BD6276E9E370 at phx.gbl>
> Content-Type: text/plain;	charset="iso-8859-1"
> 
> To bad there is no one building large VHF amps.