After some adjustments yesterday, I have it now set up where I won't even need a keyboard.? A setting in Win RDP without password allows this.? Now if in the event I do need one every now and then, I can borrow the wireless one I use for my main desktop. That problem has been solved.
Before I leave keyboard comments, I decided to make one of these yesterday just as an experiment:
I didn't have the ferrite bead specified, so tried a couple I had in my parts boxes of around the same size.? I could never get it to work correctly.? Trying to plug in the USB keyboard, the three lights would blink every time I touched a key, but no response on screen.? Only way it works is if I disconnect the capacitors in the circuit.? If even one is still connected, the keyboard functions as I describe.? I'll bet I need the bead specified or one close is the reason.
Monitor was creating some interference, but easy to keep that turned off as I control remotely most of the time.
There is still a big noise around 5 Mhz.? I think this is coming from something outdoors as when I turn the loop, at certain spots I can null it out.
I also still have "birdies" with fairly even spacing, but varies depending on band.? These are more of a nuisance than a reception stopper as I can use HDSDR's filters to notch them.? However, would still be nice to locate the source.? With the monitor and keyboard eliminated, might be the desktop power supply.
As far as ground loops, I think they're gone.? Center spike is pretty narrow.? Can get a bit wider at higher frequency, and on some bands it hardly appears at all, so satisfied as far as that goes.
I will try and video the remaining noises today and post.? It will take some time.? I'm trying to find free screen capture for Win 7 that also allows audio.? If not, I can use the videocam.
Jon
