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DAVE,
Concerning the BroomStick Antenna: http://www.hard-core-dx.com/nordicdx.../bromstik.html http://www.hard-core-dx.com/nordicdx...al/broom2.html http://www.hard-core-dx.com/nordicdx.../tunestik.html http://www.hard-core-dx.com/nordicdx.../tunstik2.html IIRC: The 1.2kM of wire was wrapped on a piece of PVC Pipe http://www.hard-core-dx.com/nordicdx...al/broom3.html - - - "improved model is 6 m (18Ft) of 4 Inch OD PVC" (Section of Well Lining that was over 18 Foot Long.) = = = Effectively a 18 Foot Vertical Antenna. "I mounted the 6 m (18Ft) portion vertically, and the 2.5 m (7.5 Ft) section horizontally (a "reverted "L"" system). I added in my 250 m (750 Ft) Random Long Wire (it was there, so why not use it?), grounded the thing and in great anticipation, plugged it into the radio. - - - The results were more than amazing." - by Marty Leipzig HELLO! Forget the BroomStick [.] TBL: This Guy had a 750 Ft Random Wire Antenna ! When your 'think' of a Broom Stick Antenna that has a size small wire tightly wrapped along a length of PVC Pipe. Just consider the piece of PVC Pipe an equal section of Aluminum Tubing; and not much more. Better to try a Eight Foot Section of 2"-3" PVC Pipe with a single wire wrapped in three coils on it. * Use a 500 Foot Spool of #14 AWG Insulated 19 Stranded Wire. * Each "Coil" set to resonate at a different band of your choice. * Each "Coil" spaced 1'-2' apart on the PVC Pipe. IMHO: The BrommStick Antenna is a 'good idea' for Apartment Residents stuck with a single outside facing window. - - - Been There, Done That ! REMEMBER: The ANTENNA + GROUND SYSTEM is . . . 55.5% of the Radio/Receiver and Antenna+Ground Reception Equation. GoTo= http://groups.yahoo.com/group/SWL-AM...na/message/288 All are WELCOME at this "Antenna Ashram" + Who Seek Better Reception + + And a Clear Understanding + + + From That Which Transcends the Ether and Beyond. WHE "SWL Antennas and AM & FM Antennas" eGroup on YAHOO ! - When You NEED to Contemplate the - - "Aerial High" and the - - - "True Meaning of Ground". iane ~ RHF .. .. = = = "Dave" = = = wrote in message ... I just got through picking up a ton of discontinued wire from my local Home Depot, and was planning on building a "broomstick" antenna like some I found described on the net. Got a question though: doesn't "stretching out" the coil to a meter or more reduce the inductance of the resulting coil? Why wouldn't it work better to just leave it on the spool? I was under the impression that the formula for calculating the inductance for a given coil involved multiplying the square of the number of coils by the ratio of the coil width to length. Wouldn't this mean that a "longer" coil would have a lower inductance than a "shorter" coil, given the same length of wire and approximate diameter of coils? Forgive me if I'm being stupid here, it has been twenty years since I have attempted anything like this, but that was what I thought. The main account I am thinking of was related by someone in Saudi Arabia who wrapped 1.2 kM of wire around a piece of PVC and vastly improved their reception of WWV in the states. I was going to do something similar, and then looked at the two spools of wire that I was about to unwrap. They are already coils, so shouldn't I be able to just hook them up to an aligator clip and stick this to my whip antenna? (I am now thinking about taking the wire off of the smaller spool and adding it to the larger. Shouldn't that work?) And if I leave the wire on the spools (which are plastic) couldn't I turn them toward or away from the station of interest to further improve reception? (I could even put this in my attic, gaining a few feet of elevation and hiding it from my unappreciative wife.) Any input on any part of this idea is more than welcome. I would greaty value the opinions of those who have actually done something like one of these two options. Thanks, Dave .. |
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