antenna insde vrs. outside - elmers Forum at eHam.net

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antenna insde vrs. outside	Reply
by KC0LKE on December 6, 2003	Mail this to a friend!
Does its make a difference if an antenna is at the same elevation inside of the house instead of outside? Thanks 73

RE: antenna insde vrs. outside	Reply
by AA4PB on December 6, 2003	Mail this to a friend!
It would be better to be outside the house although how much difference depends on the construction materials. Even with a wood frame construction there could be some loss when the roof is wet or covered in snow and ice. The other problem is that inside the house you are usually closer to electrical wiring, metal gutters, etc.

RE: antenna insde vrs. outside	Reply
by N6AJR on December 7, 2003	Mail this to a friend!
on the other side, you won't have the neighbors banging on your door every time a cb'er drives by running power if they cant see your antenna...

RE: antenna insde vrs. outside	Reply
by KZ1X on December 7, 2003	Mail this to a friend!
Depends on what frequency and polarity, plus some other factors. Please provide more information.

RE: antenna insde vrs. outside	Reply
by KT8K on December 7, 2003	Mail this to a friend!
I have almost always found a (very) noticeable difference between having an antenna indoors and outdoors. I think there is just too much metal, wiring, etc. in the average house to allow any antenna to work very well inside. The farther in the clear your antenna is positioned (and height is one of the best ways to get it "in the clear") the better. Even ten feet further from loss-producing objects/structure/ground can make a noticeable difference, in my experience. Good luck, and hope to catch you on the air soon. 73 de kt8k - Tim

RE: antenna insde vrs. outside	Reply
by AA4PB on December 7, 2003	Mail this to a friend!
What conbination of frequency and polarity could possibly make an indoor antenna work better than an outdoor antenna?

RE: antenna insde vrs. outside	Reply
by KA9CCH on December 8, 2003	Mail this to a friend!
I have two antennas: 1. DX-EE (10-40 meters) in attic 2. G5RV Jr (10-40 meters) in yard slightly lower than attic. The G5RV is MUCH MUCH better than the attic antenna. I use a two pos. coax switch to compare the recieved signals. On very strong S9+ I can't tell difference. However, on medium to weak signals (read most) the difference is readily apparent. KA9CCH

RE: antenna insde vrs. outside	Reply
by K5DVW on December 8, 2003	Mail this to a friend!
SOmething nobody has mentioned is if you put an antenna in the attic, you can really expose the house occupants to high levels of RF. And... you can expose your antenna to high levels of RFI from TV, computer, blenders, toasters, and whatever else is in the house. I'd always go for the outdoor antenna given the opportunity.

RE: antenna insde vrs. outside	Reply
by WB2WIK on December 8, 2003	Mail this to a friend!
Having tried this lots of times, I've never yet seen the case where an indoor antenna worked as well as the same antenna installed outdoors. Ideally, the difference is small; but typically, the difference is substantial. One thing really troubling about indoor antennas is their ability to create interference to other systems within the home: Smoke detectors, intrusion alarms, telephones (and anything connected to a telephone line), etc. are all bothered by RF, and keeping transmitting antennas as far away from them as possible helps prevent induced interference. WB2WIK/6

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