I have two related questions relating to the subject above, and would appreciate advice. In more detail: I am beginning the design of a 160 - 10M amplifier that will be cathode-driven, push-pull, pro
ORIGINAL MESSAGE: REPLY: I don't know a lot about these, but I recall that coupling is easier with a higher tank Q. Makes sense because higher Q means higher circulating current and thus a stronger m
Gene May wrote... push-pull, probably use tetrodes (tentatively 4CX600J's) and couple the tubes' tank circuit to the antenna circuit with what is often nicknamed a "swinging link". A "swinging link"
B&W made "plug in" P-P coil assemblies in 100 Watt and 1,000* Watt sizes, I am looking for a set of each each myself. The coil sets can all be plugged in and relay switched, my plan. 100 Watts is the
There were several manufacturers of coils in the 25-1000W range in 5 power steps. Considering that the 1000W version was more than able to handle roughly 700W out on CW and 2800W PEP on AM they are q
You might want to look at a link that does not swing, but instead has a series capacitor. That's what I've used for years in my balanced antenna tuner. The links are pretty much the same IIRC, but I
Here you go. Hope this helps.: http://www.w0btu.com/files/antenna/W0BTUBalancedTuner3Coils.jpg As you can see, the fixed link coils were B&W HDA. The swinging link coils, HDVL. 73 Mike www.w0btu.com