Topband: BOG talk

[k1fz at myfairpoint.net]

 Wished I had some eggnog. May get some.  Meant to type impedance ratio. 
 Thanks for correction !
 . 73
 'Bruce

On Wed, 24 Dec 2014 10:25:39 -0500, kd9sv <kd9sv at comcast.net> wrote:
  
 Bruce, you been in the eggnog too early...you are giving impedance
  transformation ratios and not winding ratios...de gary, kd9sv

  -----Original Message-----
  From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of
  k1fz at myfairpoint.net
  Sent: Wednesday, December 24, 2014 10:13 AM
  To: Topband
  Subject: Topband: BOG talk

  
  Have had inquires about self termination of BOG antennas.  *It varies with
  the type of soil, moisture content, and length of the wire relative to the
  ground. 
  Question #1
  My BOG is directional, in the direction of the wire without a resistor,
  then why bother with one?
  Good Question- Unless you are lucky the  terminating resistance and
  reactance will be less than ideal. 
  * I would rather have a 200 foot BOG with a 200 to 250  ohm termination
  resistor at the far end for 160 meters. 
  Two 470 ohm resistors in parallel  equals 235 ohms and works well.. 
   
  75 ohm coax users can transform to 225 ohms with a  x 3 turns transformer
  ratio. 
  50 ohm coax users can transform to 250 ohms with a  x  5 turn transformer
  ratio.. 
   
  Question  #2
  I can understand why some want an incognito antenna, but I  have above
  ground Beverages, why would I want a BOG ?
  * Well I have above ground Beverages too, but there are times  the BOG "out
  shines" other antennas, like with QRN when a storm front is approaching. 
  Not sure why, maybe angle of radiation ,  but 'what ever Beverage antennas
  do'  in this case the BOG often does it better.. 
  In  general the BOG is not as good as a  Long Beverage antenna, but every
  antenna has its day. 
   
  73
  Bruce-K1FZ
  www.qsl.net/k1fz/bogantennanotes/index.html
   
   
   

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