[Boatanchors] Beam question

[Geoff]

Ive never been inside a EXP-14 so cant say if they are different than other models, however Hi Gain probably has them available since its a current product.

Carl
KM1H


  ----- Original Message ----- 
  From: RAY FRIESS 
  To: geoffrey at jeremy.mv.com ; boatanchors 
  Cc: FLBOATANCHORS ; glowbugs 
  Sent: Saturday, February 18, 2012 8:54 PM
  Subject: RE: [Boatanchors] Beam question


  What kind of caps are they?   Easy to get at and replace or should I begin thinking about a separate 15 meter beam?
  I'm sure as old as this antenna is (manufactured in the 80s) the chances of someone having a trap lying around are
  two ...  slim and none.
   
  ray
   

  > From: geoffrey at jeremy.mv.com
  > To: rayfrijr at msn.com; boatanchors at mailman.qth.net
  > Date: Sat, 18 Feb 2012 20:40:01 -0500
  > CC: flboatanchors at yahoogroups.com; glowbugs at piobaire.mines.uidaho.edu
  > Subject: Re: [Boatanchors] Beam question
  > 
  > Since the DE only has a 15M trap Id suspect a shorted cap which would 
  > explain why 20 still looks OK
  > 
  > At least the DE is easy to get at.
  > 
  > Carl
  > KM1H
  > 
  > 
  > 
  > ----- Original Message ----- 
  > From: "RAY FRIESS" <rayfrijr at msn.com>
  > To: "boatanchors" <boatanchors at mailman.qth.net>
  > Cc: "FLBOATANCHORS" <flboatanchors at yahoogroups.com>; "glowbugs" 
  > <glowbugs at piobaire.mines.uidaho.edu>
  > Sent: Saturday, February 18, 2012 7:59 PM
  > Subject: Re: [Boatanchors] Beam question
  > 
  > 
  > >
  > >
  > >
  > >
  > >
  > >
  > >
  > >
  > > Need some advice from the fellow old timers here ... or even the wise 
  > > newcomers...
  > >
  > > I have a HyGain beam antenna, the Explorer 14. Fairly old, but has been 
  > > a great performer with nearly unity SWR from one end of the band the other 
  > > on 10, 15 and 20 ..
  > > until recently.
  > >
  > > Now, a few weeks ago the SWR on 15 shot up so high that it nearly pins 
  > > the SWR meter. However, the SWR on 20 and 10 are still less than
  > > 1 to 1 and it continues to load fine. Barely moves the needle on the SWR 
  > > meter.
  > >
  > > My question is, what should I suspect? A 15 meter trap gone bad, or 
  > > maybe corrosion in the area where the traps and elements are clamped 
  > > together?
  > > The antenna has been up for about five or six years now, without any 
  > > trouble prior to now. Sometimes there would be brief periods of a few 
  > > hours with a
  > > high SWR such as when we had snow accumulate on it, but when it dried up, 
  > > the SWR came back down to normal.
  > >
  > > I thought if it was either a bad trap or a corroded element to trap joint 
  > > that the SWR would be all out of kilter on all three bands, not just 15 
  > > meters.
  > >
  > > I'm sure it's something with the antenna. I use a TS-50 solid state rig 
  > > with the automatic antenna tuner. It still loads and puts out full power 
  > > on 20 and 10,
  > > but on 15 because the SWR is so high, the power dips down to about 5 watts 
  > > output on the beam. I can load a regular dipole without problems.
  > > I tried taking the auto tuner out of line to see if it was having a 
  > > problem on 15, but I still get the same high SWR without it in line.
  > >
  > >
  > >
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