For HF operating, I am considering running a ladder line from the ATU just inside a window, through the window (squeezing it between the window and the window frame; not actually through the glass), and out to a dipole suspended outside.
I am interested in all amateur HF bands, 3.5 MHz to 28 MHz, but can absolutely live without 1.8 MHz, and can live without 24 and 28 MHz in a pinch. The idea is to try to avoid having to drill a hole to route a coax cable through. The window frames are made of wood, so coupling should not be a problem there.
I haven't yet considered the exact height and length of the dipole, but the plan is to make it a simple center fed dipole as long and high as I can make it, with a bleeder resistor across the feedpoint to help bleed off static. The ladder line would ideally extend to the feedpoint of the antenna, minimizing the number of joints that could break.
The feed between the ATU and the transceiver would be a short coax patch cable (think half a meter of RG-58 or something like that, mostly depending on what exactly I have in my junkbox).
I have some computer equipment, including a powered 2.1 speaker set and a USB hub, within a meter or so from where, based on my current (very rough draft) ideas, the feedline would pass. I don't need to have the speakers turned on while transmitting, but it would be a bummer if for example the computer starts acting up due to RFI.
Hence my questions (two, but highly related):
- Am I insane for even considering a setup like this?
- What do I need to watch out for? Any particular things that can come back and bite me if I'm not aware of them, and how to mitigate those?
Particularly when answering the latter, please consider me essentially a beginner; it's been long enough since I had to actually worry about these things that the things you would mention to a beginner is probably a good place to start.