开云体育

I believe the problem isn't the voltage itself, which would be found (measured) between gate and ground. The problem is knowing where, in the circuit, the input power is dissipated. The gate-to-ground

Just to add some elements to the discussion. Here's what I noticed on my Drake L-7, so with 2 x 3-500Z. The -9V bias on the grid is generated directly on the grid; the 9V zener is not in the cathode

Pg=Vgc X Ig

VK4TUX.? ?Nope.? that -75 vdc is for BIAS? voltage and only when operating Class C.... (either grid or cathode driven). Look under? cathode driven....and 0 vdc? bias voltage. U will see 215 V

Yes, that’s what Eimac says typical grid should be. I Eimac also states max limits: Ig 108mA Ip 400mA max output 740W but Heatgkit SB-1000 and AL 80B must have special permission from god. Their

I can't find this magic formula in the Eimac documents I have. Could you post this document or a URL that allows us to find it? -- F1AMM Fran?ois De la part de Adrian Fewster via

1st, voltage squared divided by resistance equals power. 2nd, The Eimac formula for grid dissipation is: Pg=Vgc X Ig where Vgc is the peak positive grid to cathode voltage and Ig is the DC grid

Eimac states driving impedance is 115 Ω grid dissipation = peak voltage X grid current. so at 100W drive, peak grid voltage is 150V 150V X 0.2Ig = 30W grid dissipation. 30W I don't think you

I own a Heathkit SB-1000. Have not had it to long, just a few months. Had a few issues and just wanted to share them and what I did to fix them. one day on 80M I think I hit a bad something. Bad tune

Jim, VE7RF, that is a boatload of FB info!!! I had not had a chance to respond but have read it twice and may need to read it a few more times and drill it in. Thank you!!! Great contribution to me

Is there a way to remove the red tx led without taking off the front panel?? I cannot see in the back because of the large filter caps.? TU ..Bill

Tom is great. Just email him again

Yeah. Weird. It printed out fine here. "Email me at gudguyham@.... Lou" Alek VK6APK

Ok, thanks. I just emailed you Lou

Whoops @aol.com. Sorry Sent from the all new AOL app for iOS

Come to think of it... if your ISP won't display A O L dot com, then it may not even allow you to e-mail to A O L dot com. -- See my QRZ.com page at *https://www.qrz.com/db/K0XP*

"That" was supposed to be "at A O L dot com" without the spaces. Your ISP probly doesn't like the A O L part and removed it. Steve K0XP -- See my QRZ.com page at *https://www.qrz.com/db/K0XP*

gudguyham@.... Lou. what is that??? ? Not an email?

Email me at gudguyham@.... Lou Sent from the all new AOL app for iOS

Plate load Z? =? loaded B+ / (1.8 x? DC plate current). On all those old amps, the higher voltage was always 41.4 % higher than the lower B+ setting.? ?The DC plate current was 41.4%? higher,