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.
Ham antenna attic how to.
I have no problem contacting my ham club s local repeater from inside my home.
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.
As with most antennas the more height the better for indoor operating however most hams recommend using low output power.
Attic antennas many types of antenna can be mounted in the attic if you don t have radiant barrier tech shield.
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.
You will need a peak in your attic that is tall enough for the antenna to fit.
Much better than the last time for sure.
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.
Install a 9 1 unun at the antenna end of the coax.
If you attic isn t tall enough you could angle the antenna mounting to make it fit.
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.
The same techniques apply.
You should then make the coax shield connect properly to the pl 259 connectors at each end.
Overall i d say it worked pretty well.
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.
In some areas external antennas are not allowed so antennas located in the roof space are needed.
Attic antenna installation precautions.
The initial deployment only took me 30 minutes plus a bit of time to feed the antenna line.
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.
Remote rf switch control box in the shack chooses which antenna is operational in the attic.
The kb9vbr 2 meter j pole antenna is 69 inches tall overall.
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.
Keep the antenna as high off the floor as possible.
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.
