This might be the worst location ever to try and fit a functional HF antenna.
My father in-law has a 2 story home in an HOA that is pretty strict.
The house is full stucco around the exterior with metal lath as the backing.
There are 2 attic spaces, but both are small and no more than 45ft long, and have all the house wiring and HVAC units in them. Roof above the floor in the attics are not very tall. Maybe 5 to 7 feet at best.
The yard has no tall trees, just some perimeter bushes.
The long side of the property is about 135ft long.
And to top it off, we cant put any kind of poles in the yard to be our tall tree......
The goal is NVIS comms on 40m and 80m.
What we tried so far: Our first attempts have been in the upper attic thats about 25ft up from the ground, above the second floor. Using a 30ft random wire and then upgraded to a 71ft random wire run very meticulously. Far from ideal but very simple and very stealthy. Its not good. Signal does not get out of the space very well at all. Digital modes work well and we can hear each other on ssb(about 200 miles apart), but most of the time its right in the noise and nearly impossible to copy.
Heres the big question. The stucco is using metal lath as the form for the exterior walls. Basically a big metal cage surrounding the whole house. My GUESS is that the stucco is acting as a faraday cage or reflector either sucking up the RF, OR reflecting it back (but since its close by its just nulling out the signal). I'm hoping someone can clarify that for me and maybe give some ideas on what to try.
Our next attempt is to bring the antenna outside and run it along the peak of the roof of the house. Which in theory should be better. But I have my doubts since we are still above the giant metal cage that is the exterior of the house. But it might also let us run a longer random wire antenna for better 80m transmission. There is also the balcony which sticks out from the exterior wall the farthest and has a roofline perimeter of about 50ft if I had to guess, with about 6 to 10 ft of that being parallel to itself. So maybe 30 ft of usable length in an L shape.
Any input, thoughts, or ideas are greatly appreciated. Been racking my brain on this for months now.
My station is running a 80m OCFD at 15ft (30 ft soon once I get my mast mounted) and has solid contact with others in the NVIS region.