Also try the indoor antenna by the windows.
Improve swr metal roof.
If the antenna and feedline are not working at peak efficiency some of.
The antenna then converts this rf energy into electro magnetic energy which is radiated into space.
For the purpose of the wind mitigation inspection form 1802 a secondary water resistant barrier is a self adhering modified bitumen underlayment.
I have a gp 6 2 meter 440 vertical mounted on a metal pipe that is attached to one end of a metal roof.
Swr cost appears to vary widely based on articles i have read and a quick web search but i would expect probably in the range of 0 10 0 15 sf of total roof for only the joint sealing product 1 20 1 40 sf extra for the full coverage sheet installed product done as part of a normal reroof job.
This serves as a barrier to prevent the water from entering the home even after the primary barrier the roof covering system such as shingles or.
Best bet would be to go with an outdoor antenna up on the higher part of the roof.
What type of secondary water resistant barrier is my wind mitigation report referring to.
7 things to know before choosing a metal roof if your current roof is the root of your headache and maybe even a long list of costly home repairs consider these metal roofing pros and cons.
Not an expert but the metal roof should block the signal.
The feed line is lmr400.
The sheet product itself runs about 1 00 sf.
Cireofmi jun 14 2009.
A 36 width roof underlayment install with ring shank nails having a minimum 20 rings per inch a minimum head diameter of 3 8 thru 1 5 8 tin caps or ring shank metal cap nails having a 1 diameter and long enough to penetrate the deck per code.
To alleviate this keep at least the top 12 inches of the antenna above the roof line and position the antenna as high as possible on the vehicle.
When you transmit you are sending radio frequency energy along your feedline usually coax to your antenna.
If your antenna is mounted down low on the vehicle like on the bumper or behind a pickup truck s cab the signal can bounce back to the antenna causing a high swr.
In the event of a catastrophic storm that damages the roof of the home one of the ways people can prevent water intrusion is to have what is called a secondary water resistant swr barrier.
Often the critical frequency for nvis is below 40m like 5 mhz and down.
Basically this is a peel and stick type of material that is installed before the shingles.
While the swr measures 1 1 1 5 at the antenna it has always been higher at the radio.
