At last the core should be isolated from the other components and placed away from any metal to prevent arcing. Yes, the HF Bug Bit me pretty hard If silicone-rubber tape is not available, use fiberglass tape. All high-end kW amplifiers display big, strong and rugged accessories, large coils, big capacitors, heavy toroidal transformers, big choke, for short all is big and seems to offer an excellent quality. The BEST way to get cheap gain is to eliminate loss. The problem is, they are overdriving the tube, producing IMD on the bands and shortening the tube life. The BG is ideal for your 20 to 60 Watt 2 Meter mobile or base station.
When the tuning capacitor's padder is switched into the circuit on meters and the tuning capacitor is set to minimum capacity, the padder capacitor must be able to withstand more than c. This means that a special relay that has an RF voltage rating must be used. Internet research revealed that the bias diodes were unnecessary and were removed. See the schematic diagram. RF current travels on the surface of conductors and ignores the substantial path for current below the conductor's skin. The input and output waveforms were sampled with RF pickup couplers and oscilloscopes. Breakdown voltage is inversely proportional to the frequency of the voltage.
Homebrew 3CXF7 Amplifier
The added bypass capacitors and the added anode RF-choke can be left in the circuit for operation on the other bands, but the meter tuned-circuit components must be switched into the circuit for use on meters only and switched out of the circuit for operation on the other bands. One traditional non-solution to the problem of adding more turns was to allow an open space of c. The self-resonant frequencies should be tested in each case and turns can be removed if needed to park the self-resonances in safe zones between the amateur-radio bands. Vinyl tape is not recommended. This would be about v minus v c.
Description: This involves removing the half-wave rectifier [D16] and replacing it with a c. The impedance transformation can be altered only by adjusting two or more components. Click HERE to see my other high voltage supply. Even though I have an oscilloscope at the operating desk in the ham shack, I added an inexpensive oscilloscope and RF pickup loop in the garage to save me those back and forth trips while tuning up. The actual pull-in current for a RB1 is about 50mA.