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Author Topic: Apartment dwelling ham newbie with questions  (Read 5247 times)

Posts: 911

« Reply #15 on: April 21, 2014, 04:28:28 PM »

If you live 2/3rds  of the way up a small mountain your terrain profile might help your signal tremendously if the slope is in the right directions. I would get a topographic map and a copy of YT from the ARRL antenna book and do some terrain analysis. It  may well be that  the terrain slope can make your  antenna selection options a lot easier. If you do get terrain height gain you could have a good signal on HF. We all know that height and line of site to the horizon  helps VHF and UHF but its the  boost on HF that can also be just as impressive.

 Before deciding on the antenna do the analysis, you might able to get a free lunch courtesy of mother nature. I choose my  holiday locations like this. I choose an
hotel or guest apartment on top of a  hill with good views. My xyl always agrees with my choices, little does she know that I have chosen the location for portable radio more than the views. The right slope can make simple antennas work  very well. The only caveat about high antennas and mountains is that ground conductivity  is not all that great.  What this means is that using verticals can be a  challenger or that they dont work that great. I had an experience like this  on 80 meters where even 120 radials on a full size vertical  would not work on top of a mountain. A low dipole beat the crap out of the vertical on dx paths because of the ground loss despite the excellent location and terrain advantage.


Posts: 113

« Reply #16 on: April 22, 2014, 04:48:48 AM »

The Alpha Loop antenna looks like a pretty good fit for your situation.  Combine that with a low power radio such as a Elecraft KX3 or similar and you're good to go.  If you use it indoors make sure to raise the metal blinds first.  Or replace blinds with plastic ones.

Posts: 8

« Reply #17 on: April 24, 2014, 11:49:48 PM »

Thanks, everyone.  I'd respond point by point, but to be honest I'm rather dazed and confused by the jargon.  It's going to take a few days to look that all up so I know what you said.  Well worth the effort, though.  I went through each link you all posted, though, and it's a treasure trove of info.  I appreciate it.

W6UV: We have a car, but I'm almost never able to use it due to medical issues.  I'm more or less a shut-in. 

ZENKI: I didn't understand the jargon in your post very well, but I get the overall idea.  I would have no idea how to do terrain analysis, but maybe I can figure it out.  The deck looks out into a fairly flat area, but straight back behind the deck (and through a bedroom, a bathroom, a hallway and a garage) is the top of the "mountain".  It IS a mountain, but tiny.  We're talking maybe 1200 feet.  But the view from up here is rather vast, taking in all of Issaquah, Bellevue and even Seattle in the distance, with the Olympic Mountains right behind her.  I'm hoping all that wide-openness will help.  Still, all of that is not in line of sight from this apartment.  I have a lot to learn, but I'll understand the jargon soon enough.

LA9XNA: That PDF is fantastic.  Thanks for that.
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