Ham Radio Antenna On Metal Roof

For the antenna to be really in the clear two wavelengths is a good rule of thumb.

Ham radio antenna on metal roof.

It runs up the front of the roof on the left as you face the house then runs across the roof along the ridge vent plastic construction then down the back of the roof to the eaves at an angle. For mounting i d leave the 18 pole alone. When its lower than a few wavelengths and at multiples of 1 4 wavelength like 1 4 3 4 etc the pattern of a vertical antenna can be pushed upward and away from the horizon a bit lowering its gain at the horizon. I would consider a vhf uhf antenna over a huge metal roof ground plane similar to an hf antenna over earth ground.

On using a metal roof as an antenna the joints between panels are likely not soldered and are likely to form corroded diode junctions that generate rfi. As an ultra beginner without a lot of investment in the hobby it was perfectly acceptable to have to climb onto the roof to get any signal on my portable radio s antenna. Long wire antennas look at the long wire antenna on the roof. It would likely make a lousy antenna.

I am concerned about the impact a metal roof will ham radio antennas and metal roofs 11 30 2004 within the reception discussion of the residential metal roofing forum. But the benefit of this larger roof mounted antenna is that now we can leave the radio on all the time and listen to it inside which leads to more opportunistic connections and overall more time spent enjoying. The metal roof acts as a shield so rf exposure is a non issue. You can use the metal parts of your structure as part of the antenna if that makes things easier.