[Antennas] Help with TA32 Yagi

Sun, 2 Jun 2002 19:18:39 -0400

  John,

  My guess is there is a bad connection between the
trap wire and the trap cover which is the trap 
capacitor. Carefully pull off the end caps from the traps
and make sure the self tapping screws are tight and the
connections between the trap cover and the wire are
clean. If you slide off the trap cover you'll see that there
are self tapping screw connections from the trap coil
to the element itself also, check those too.

73,  Mark  WB8JKR

On Sun, 2 Jun 2002 16:04:14 -0700 (PDT) John Geiger <[email protected]>
writes:
> I bought a used Mosley TA32 2 element yagi to replace
> my MA5B.  Figured a full size antenna would be better
> than the mini yagi.  This is the older Mosley antenna,
> not the current one.  It arrived yesterday, and I
> assembled it, borrowed an AEA antenna analyzer, and
> everything looked good.  The SWR was decent on each
> band when the antenna was on the ground pointing
> straight up.
> 
> Here is the next order of events:
> 
> 1. mounted antenna on tripod mast on roof-SWR still
> good on each band according to antenna analyzer.
> 
> 2. Checked SWR with TS2000, still looked pretty good.
> 
> 3. Finished mounting antenna-tightening all bolts,
> positioning,etc.-when SWR was checked again with
> TS2000-not very good.
> 
> 4. Went back on roof this AM to check with analyzer,
> as I had done in #1-not good again.
> 
> I get a fine SWR on 10 meters, on 20 it is resonent
> about 1 mhz low.  On 15 it is also resonent very low,
> but never a really below 1.5 to 1 or so.
> 
> SO what is going on?  How can it change so much in
> performance from #1 to #4?  I took the antenna down,
> and measured it again with the analyzer when it was on
> the ground pointing up, as I originally did.  Still no
> luck on 15, and a little better on 20.  I do have a 2
> meter antenna mounted about 6 feet above where the
> TA32 was, but that never affected the MA5B, and it did
> not affect the TA32 at first.
> 
> Here are some questions I now have:
> 
> 1. did I burn a trap out when I ran the 100 watts from
> the TS2000 through it the first time?
> 2. If I did burn out a trap, would it still work ok on
> 10 like it does?
> 3. how do I figure out which trap is bad?
> 
> Any other help on this antenna.  It will work on 10
> which is better than the dipole I also have, but for
> the same size I can get a 10 meter monobander which
> will work even better-if I cannot get it going on 15
> and 20.
> 
> 73s John NE0P
> 
> 
> __________________________________________________
> Do You Yahoo!?
> Yahoo! - Official partner of 2002 FIFA World Cup
> http://fifaworldcup.yahoo.com
> - - - 
> 
> Your moderator for this list is:
> Larry Wilson KE1HZ [email protected]
> _______________________________________________
> Antennas mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/antennas

________________________________________________________________
GET INTERNET ACCESS FROM JUNO!
Juno offers FREE or PREMIUM Internet access for less!
Join Juno today!  For your FREE software, visit:
http://dl.www.juno.com/get/web/.