-=> On 09-25-97  10:40, Jeff Edmonson said to Ivy Iverson,<=-
-=>"About High Gain Antennas for 14...,"<=-
 
Hi, Jeff;
 
 JE> For that matter, has anyone ever thought of lining up several J-poles
 JE> and  mounting them on a mast in a Yagi configuration?
 
 II> That is an interesting idea!  If you mount them horizontally, (along a
 II> horizonatal mast), the problem of keeping them stable would, I would
 II> think, be almost insurmountable for anything below 220 MHz, unless you
 II> had them in pairs: One ponting "east" opposite one pointing "west," so
 II> they are balanced, then feed them 180 degrees out of phase.
 
 JE> Copper pipe J-Poles would fair better... maybe even some small (1/4")
 JE> tubing,  and do exactly that - if you were to feed them horizontally. 
 JE> Probably better  suited for a vertical configuration.
 
Agreed, though using solid pipes, (I suggest something heavier than 1/4"
however, like 1/2" to 1"), would be fine unless you are going colinear
with them, it should be possible to make a horizontal beam using J-poles.
I'm not sure offhand if they would need to be fed in phase or 180 degrees
out of phase... I'll have to think about that...   :-/
 
 JE> You see my message to Stan on Quagi's?  Why not 4 J-poles (two driven,
 JE> opposite of each other) two reflectors (same configuration) and yagi
 JE> directors?  Put the whole thing on a 20' wooden boom...
 
Nope, missed that one.  Sounds interesting.
 
73 DE KB9QPM
   Ivy
 
 
 
... Hams do it with frequency, till their GIGAHERTZ!
 
    --
 
          ,-----> Ivy's WALL BBS Ä Home of Lakeshore Net <-----,
          |---------------> Ivy Iverson, KB9QPM <--------------|
          `-> Netmail me a request for info on Lakeshore Net <-'
 
___ Blue Wave/QWK v2.20 [NR]
--- TriToss (tm) 1.03 - (Unregistered)
---------------