It is theoretically possible to create a fire in the attic from your ham radio antenna but the conditions required for that to work require purpose and luck making this not a realistic concern for the typical attic farmer.
Ham antenna attic how to.
Attic antennas many types of antenna can be mounted in the attic if you don t have radiant barrier tech shield.
You will need a peak in your attic that is tall enough for the antenna to fit.
As with most antennas the more height the better for indoor operating however most hams recommend using low output power.
Attach a feed line and run to your tuner or if you are gonna use resonant antennas attach to your swr meter and check for high swr readings.
Keep the antenna as high off the floor as possible.
Install a 9 1 unun at the antenna end of the coax.
Much better than the last time for sure.
The same dipoles and loops that you use in your attic can also be used in any other room in your home.
Divide by 2 and place a ceramic dog bone or even pcv pipe insulator between them in the middle where you just cut and you got a dipole antenna.
When locating an antenna in the attic or roof space there are several precautions that can be implemented to ensure that the performance that is gained is the best for the circumstances.
Need lots of room keep them away from metal objects like heaters and ducts wire antennas can be run near the peak of the roof inside the attic bent in odd shapes to match the space available.
I have no problem contacting my ham club s local repeater from inside my home.
The coax shield would then be properly terminated at both ends and stop being a rogue antenna.
Once all the yagis were bolted in place on the mast i used my antenna analyzer to adjust their driven elements to provide the best match in the weak signal portions of each band.
Unun stands for unbalanced coaxial line to unbalanced antenna.
If the top of the antenna touches the walls or roof the performance may be affected slightly.
But to boost the non repeater range of my baofeng a club member presented suggestions for stringing antenna wire throughout the attic crawl space such as at my 2 story condo.
Falling through the roof is a much more likely scenario.
In some areas external antennas are not allowed so antennas located in the roof space are needed.
You should then make the coax shield connect properly to the pl 259 connectors at each end.
Also as previously mentioned my antenna is longer than my attic so i had do so some creative bending to get it all to fit in there correctly.
Attic antenna installation precautions.
The initial deployment only took me 30 minutes plus a bit of time to feed the antenna line.
The kb9vbr 2 meter j pole antenna is 69 inches tall overall.
Overall i d say it worked pretty well.
