A coaxial cable trap dipole antenna installed in the attic provides a surprisingly effective solution to hf operation on the 10 15 20 30 40 and 80 meter amateur bands at a qth with restrictive covenants that prohibit outside.
Attic dipole fire.
I installed the liquid tight conduit from my mechanical room to the attic of the house fire sealing all structural penetrations to ensure maximum safety while meeting code for electrical work which is not technically required in this case but is a best practice.
Mac af4ps fp 51 note.
When circuits are overloaded and the breaker fails to respond appropriately the excess draw could result in a fire.
It works quite well or at least good enough for me.
The fema document previously mentioned states that a whopping 43 of all residential attic fires are caused by electrical malfunction.
Antennas in the attic are a fire hazard this is one of my most favorite excuses because the factual case of a fire hazard is nearly impossible to make.
The single most common cause of residential attic fires is electrical malfunction.
I ve been using attic dipoles since i started shortwave listening in the mid 1970s.
Loft attic antennas for restricted spaces.
Hidden attic dipole antenna installation.
The first antenna was a simple zigzag dipole which i fastened to the roof spars using electric fence.
You should attempt to maintain symmetry in the system by bending the ends of the antenna in equal amounts.
This was installed at a previous qth i will be the first or millionth remember i m from fl to affirm that the antenna is the determining factor for success when it comes to one s station set up.
For the most common type of antenna the dipole the high voltage point is the ends of the antenna.
Here s the first attempt at a design.
If the attic area is not large enough to accommodate an almost full size dipole simply erect as much of the antenna as possible in a straight line then bend the ends of the dipole up down or sideways from the main portion of the system.
Potentially flammable material as i didn t want any arcing to create a fire risk.
The infamous attic dipole.
