[TowerTalk] Hygain TH-6DX

[Bob AD5VJ]

The tower project went well, the antenna is up and although we did run into
some problems with the HamIV rotator. Somehow the four bolts that hold the
bell housing together had dropped out (vibration I guess) anyway after
taking the rotor down and reworking it all including new grease, all is well
and it is working.

The antenna doesn't cover much of the 15 meter band right now. 

I am talking about from 20.959 to 21.172 is my 2.0:1 points. It never does
come down completely to 1:1 on 15 mtrs like it does on 20 mtrs and 10 mtrs. 

21.080 is its point of best resonance and it only comes down to 1.8.

So I think this may be a feed line length issue. I also installed an
additional coax BALUN after already having the Hygain BALUN inline, so I am
going to take the coax BALUN out and then I will see what it will do.

20 mtrs  from 13.900 to 14.275 < 2:1  range
         from 14.000 to 14.165 < 1.5  range
         from 14.000 to 14.080 it is flat.

10 mtrs   28.000 to 28.870 it is less than 1.5

If I solve this 15 mtr issue I will be very happy with this beam, thanks for
all the help and support.

Bob AD5VJ

> -----Original Message----
> From: Jim Hargrave [mailto:w5ifp at gvtc.com]
> Sent: Thursday, April 01, 2010 9:25 PM
> To: Tower and HF antenna construction topics.
> Cc: ad5vj at ad5vj.com
> Subject: RE: [TowerTalk] Hygain TH-6DX
> 
> Bob,
> 
> My Manual has the curves. I'll scan the page and send it to you direct.
> 
>    73's  Jim - W5IFP
> 
> 
> > -----Original Message-----
> > From: towertalk-bounces at contesting.com
> > [mailto:towertalk-bounces at contesting.com]On Behalf Of Bob AD5VJ
> > Sent: Thursday, April 01, 2010 5:49 PM
> > To: towertalk at contesting.com
> > Subject: [TowerTalk] Hygain TH-6DX
> >
> >
> > I have opted to go the TH-6DX route due to time constraints on
> > getting help
> > and also due to the fact that I cannot afford what it would take
> > to get all
> > the other parts to make it a whole antenna at this time.
> >
> > I will have to budget for that for next year possibly or later the
> way my
> > economy is looking here.
> >
> > Does anyone have what would be considered a normal looking swr
> > curve for the
> > TH-6DX? The TH-7DX manual has one but the manual for the TH-6DX
> > does not. I
> > have looked on Google and the only thing it comes up with is
> something
> > called a 'torrent download' whatever that is.
> >
> > Anyway can't find one does anyone happen to have one or have a copy
> of the
> > May 1970 Ham Radio Magazine. Someone told me there is a curve it in
> on the
> > TH-6DX.
> >
> >
> > Thanks
> > Bob AD5VJ
> >
> > 73,
> > Bob AD5VJ
> >
> >
> >
> > _______________________________________________
> >
> >
> >
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