On Sep 29, 2006, at 4:53 PM, pentalab wrote:
--- In ham_amplifiers@..., R L Measures <r@...> wrote:
RICH SEZ...Now the bad news: Without W8JI, the "recognized
amplifier expert", Charles Thomas Rauch, Jr., and his statements
such as the laws of AC circuit analysis do not apply to VHF
suppressors; and VHF resonant circuits can't ring, but HF ones can,
things will definitely be less entertaining.
### this is one soap opera I don't wanna ever hear again!
Why read it more than once? Before I started the grate parasite debate with Tom I was warned by a Ham in Manhattan that he wins debates in the eyes of his groupies by never backing down, even on issues that, to a RF-savvy person, make him look the clown. In my opinion, this is probably something he picked up from his father, Charles Thomas Rauch, Sr.
- editorial - If I go to my grave with a bunch of newbies believing Tom's statement that Ni-Cr alloys have reverse RF skin-effect, VHF resonances can't ring, et cetera, I will not be resting in peace - and that's for damn sure. .
### The best way to solve parasitic problems in a TL-922 SB-
220/221 is to REMOVE all 6 x 200 pf bylass caps + 2 x RF
chokes from sockets... and toss em !! Strap all 6 x grid
pins to chassis ..with wide strap..... end of problem.
The grid resonance in a stock TL-922 is in the high 80MHz range. The grid resonance with the grid pins strapped to ground is typically about 1MHz lower. How does this make the amplifier more stable at the 120MHz resonance in the anode circuit?
Rich, AG6K
