[AMRadio] new antenna and matchbox a bust.


KB2WIG at twcny.rr.com KB2WIG at twcny.rr.com
Tue Jan 30 12:55:17 EST 2007


"What advantage does germanium have?'

I think its the lower knee voltage which allows for a more sensitive 
bridge.


klc

----- Original Message -----
From: Brett gazdzinski <brett.gazdzinski at verizonbusiness.com>
Date: Tuesday, January 30, 2007 8:39 am
Subject: RE: [AMRadio] new antenna and matchbox a bust.
To: 'Discussion of AM Radio in the Amateur Service' 
<amradio at mailman.qth.net>


> 
> What advantage does germanium have?
> 
> Brett
> N2DTS
> 
> 
> 
> 
> 
> I have lots of insulated wire 
> > First, Nice QSO Sunday night. 
> >  
> > Second,  my antenna is a full 80m dipole supported at 75ft by 
> > two  pinetrees 
> > that are <50ft apart, that means that there is a LOT of 
> > Dangle  there(around 
> > 35 ft or so I think). I just pulled the support lines over 
> > the  trees, and the 
> > ends of the dipole actually drape over the top and down the 
> > back  of each 
> > tree. Its insulated #12AWG stranded wire, fed with cheap 
> > brown  300 ohm twin lead, 
> > that drops down to a choke balun inside the attic (15  turns 
> > at 4.5 inch 
> > diameter).  This is definitely NOT an optimal  setup.  BUT I 
> > do get out, and I've 
> > been heard as pretty far off on AM, and  work the North East 
> > with No Problems. 
> > (I run a Valiant at about 120watts  output).  I can load it 
> > up on any band 
> > except 160, using my el-cheapo  MFJunk tuner. (160 causes 
> > quite a light show)... 
> >  The biggest problem I  have with it is that the pines are 
> > always dropping 
> > branches after storms and  sometimes they pull down the 
> > antenna or part of it 
> > with them. 
> >  
> > SO if there is a significant vertical portion to your dipole, 
> > don't sweat  
> > it.  It will just add some vertical polarization, and change 
> > the pattern,  but 
> > using trees will skew that anyway. 
> > ______________________________________________________________
> 
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