|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
180.200.152.41
In Reply to: RE: that antenna isa dipole which has switchable networks built in to the base posted by Jeff Starr on April 05, 2015 at 09:11:21
you adjust the position and length of the two rods, and then you twiddle the knob. Usually I find that having the rod closest to the station's txer slightly shorter than the one behind it.I am in Australia, maate. So, you will need to get a topographical map of where you are which includes the transmitter (txer) sites.
You should also use google maps to get a compass picture of your home's orientation on the block.
Then you plot the bearings on the big map from your place to the two txer sites. Then plot them on to the block picture and from the room and tell me us about that.
And then use the phone app. to find where they might be in relation to your room with all its reflections. You may find there is one set-up that's best for both stations. You may need two very different arrangements for the rods and the knob. You may find that neither is exactly pointed where the maps you have done say they should be pointed.
This will be due to your room's own reflections.
I have been fortunate until ,now to have just one big tower on a tallish mountain to aim at for TV and FM. Now one of the two FM stations I listen to has moved some 15 degrees east of that mountain. And it is the one with the least signal. And, I am using a tube RF front end for my main tuner. IME tube front ends need much more signal to go fully quiet. So, I am thinking through all this myself.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
Edits: 04/05/15Follow Ups:
Hey Tim, thought The oz might have been related to "the Wizard Of Oz". Never considered you were in Australia.
Thanks to FM Fool, I got to thinking about the best location for my antenna. I took the two longest pieces of coax cable I had and put the antenna in the spare bedroom, which is closest to transmitters. I tried the plastic dipole first, still had noise. I put the Metz [ST-2] in there, just put up at about a 45 degree angle, and no more background noise. Both stations I listen to are about 6 miles away, and both are now clear and clean.
I just need to get a 30ft run of good coax, to neaten up the installation, and I'm done.
I appreciate all the advice. For anyone else, wanting to optimize their antenna placement, I've included the FM Fool link. You can see where your transmitters are, how powerful your station is, and much more.
It 'depends.'
You have got that, now.
:-).
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: