[Boatanchors] Beam question

D C _Mac_ Macdonald k2gkk at hotmail.com
Mon May 25 13:26:02 EDT 2015


And the Mosley trap assemblies are unpainted aluminum cylinders with black plastic end caps to keep water and insects out of the guts.  The coil sections are wound on what seems to be white nylon forms.  Two small holes are in the "BOTTOMS" of the traps to allow condensation to escape. 
 
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* k2gkk hotmail com * 
* Oklahoma City, OK * 
* USAF & FAA (Ret.) * 
* * * * * * * * * * * 
 

 
From: rayfrijr at msn.com
To: k2gkk at hotmail.com; boatanchors at mailman.qth.net
Subject: RE: [Boatanchors] Beam question
Date: Mon, 25 May 2015 11:06:31 -0600






This may not be a Mosley then.  It has two traps in each half of the driven element.
They are black and circular.
Looking inside, I can see they are quite dirty, almost a rust colored dirt, but not rusty.  I do see the screw and
mounting post inside.

From: k2gkk at hotmail.com
To: rayfrijr at msn.com; boatanchors at mailman.qth.net
Subject: RE: [Boatanchors] Beam question
Date: Mon, 25 May 2015 12:00:52 -0500




The Mosley trap antennas (20/15/10 meters) have only one apparent trap assembly on each half of the dipole. 
 
There are two coils inside those housings.  The smaller coil is the 10 meter portion and will be positioned closest to the center feedpoint and the larger is resonant at 15 meters.
 
As a last resort, go to Mosley's website and get the instructions for the TA-33.  Mosley sold/sells the driven element alone as a TA-31. 
 
I suspect that somebody close to you has a TA-33 instruction sheet that you could copy to get the info you need. 
 
  
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* k2gkk hotmail com * 
* Oklahoma City, OK * 
* USAF & FAA (Ret.) * 
* * * * * * * * * * * 
 

 

 
> From: rayfrijr at msn.com
> To: boatanchors at mailman.qth.net
> Date: Mon, 25 May 2015 10:46:19 -0600
> Subject: [Boatanchors] Beam question
> 
> Was it the Mosley TA-33 that had the cup or circular type antenna traps?
> What would be a good way to clean these traps?   I have the driven element traps and am
> considering making a triband dipole with the driven element.  I looked inside the traps and
> they are dirty inside.
> 
> 
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