Vrms = Vp/sqrt2. Vrms^2 = Vp^2/2. P=Vrms^2/50 ohms = Vp^2/100.

Depending on the demand for electricity on any give day in the US, the time can be off by a minute or more, usually by around 9-12 PM. At this point, utilities will over- or under-generate to make the

Where would I go to get that?

I don't have Arduino and don't plan to have one. Do all of these work without it? How about the one NZ0T asked about? I'm not SBC savvy. I just have a Win10 computer.

Lee, I get it. I've been where you've been. But you haven't yet got to where I am, so here it is: You made a decision that turned out to be sub-optimal. For whatever reason, you decided that you weren

According to the schematic, these capacitors are 1 uF. The .1uF must be a typo.

Good hint! Thanks.

#alignment

GAAA! You're right! The locations of T1 and T3 on the schematic are opposite from the layout diagram. I failed to make that distinction earlier, and so came up with the wrong result. Rats! Hans, if yo

Oops! (red face). It is the bifiliar winding we are working with, not the trifilar. Following the instructions, soldering in both of the black leads from the T2 toroid does indeed connect Q2's drain t

I suspect that the manual is correct, looked at from the top side. We are soldering in a trifilar winding ONE WINDING AT A TIME. After the first connection, that winding should connect Q2 to C7 right

For an IRF510, the middle pin is the DRAIN. According to the schematic, the drains of Q1 and Q2 are (ultimately) do connect to C7. The sources are grounded, and the gates are fed from T1. Does this he

I looked at the pictures in the PA manual. It's pretty obvious the twists were done by hand (Hans?). If it's good enough for him, it's good enough for me. If I had three meters of wire to twist instea

Great idea, not likely to happen. The firmware is already "full up." If enough present features were removed, scanning might be possible, though I doubt many would support this. On the other hand, Han

0.6mm enameled wire is a bit hard to come by on this side of the Pond. Would AWG 24 be OK for the T1 and T2 transformers in the 50W PA? It's available in several colors. AWG 22 is also available, but

Grammar checkers can be just as bad. In Western North Carolina there is a River named the French Broad. It ultimately sends its water to the Mississippi. There is an Electric Membership Cooperative th

It's not common knowledge, but marketing types have only one helix in their DNA, so they can be re-programmed if you're careful. :)

Excellent example of home-brewing! Very nice, Helmut!

#mods #qcx #supply

That is a work of art. Wow!!

Well, on the trace diagram, that is.

The pic in the QCX manual is labelled correctly. What is not shown is the edge of the PCB, which would be to the RIGHT of the figure (not the left). Another, less gentle way of saying this, is that th