On 20 Sep 2006 02:53:13 -0700, "Telstar Electronics"
wrote:

+++
+++Frank Gilliland wrote:
+++ No PCB = no cracked traces, copper seperation, no burnt boards, better
+++ heat dissipation, more efficient conductors, etc, etc. Let's face it:
+++ replace the power transistors more than twice on a PCB and your board
+++ (and therfore your amp) is garbage. Not only that, but it also allows
+++ the flexibility to use transistors of different physical sizes and
+++ styles; i.e, the amp can be upgraded or retrofit as desired.
+++
+++You're losin' it... no PCB at RF frequencies means wires and
+++uncontrolled inductances / resonances all over the place causing
+++instabilities... resulting in oscillations. Why don't you think any
+++commercial amps are built your way.
+++Great idea Frank... LOL... you're truly a great engineer!
+++
+++www.telstar-electronics.com
***************

Below about 1 KW, PCBs are adequate. In the 10 to 20KW range forget
laminates. You would have to plate at least 3 ounce if not 4 ounce
copper. Beisdes most laminates will have tremendous problems with RF
currents at these power levels. AIr dielectric or even ceramics
provide a better solution.

Also I believe Frank never mentioned the actual power out of his
design.

james