Fred and Tom,

I'll be interested to hear what Alpha Delta says on this.  I don't have 
one, but use an antenna of similar design.  I don't see how changing the 
75/80 meter band will affect other bands.  The 40 meter dipole section 
(between the center insulator and the coils), and the parallel dipoles 
for the other bands  should be independent of  whatever changes are made 
to  the 75/80 meter wires after the coils.

In my own installation (full size 80 meter dipole,  coils and extra wire 
to resonate on 160, and parallel dipole for 40 meters from the same feed 
point), any changes to the 160 meter section has no effect on  the 80 or 
40 meter dipoles.

Maybe there is something going on with the Alpha Delta that I'm not 
aware of, but that's my story and I'm sticking to it.

73, Steve KW3A

On 5/1/2011 3:11 PM, Fred Adams wrote:
> Tom, thanks, I'll do that.
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of tom behler
> Sent: Sunday, May 01, 2011 3:02 PM
> To: [log in to unmask]
> Subject: Re: Question on Alpha Delta DXCC Antenna
>
>        Fred:
>
> Yes, it will affect the other bands if you shorten the 80-meter portion.
>
> The way to adjust things on 80 meters is to work with the end spacers and
> fold lengths of wire back on themselves.
>
> I have not done this, but I know it can work.
>
> For specifics, it might be good to e-mail Don Tyrrell, the guy whose company
> makes those antennas.
>
> His e-mail address is:
>
> [log in to unmask]
>
>
>
>
>
> Again, I wouldn't cut the 80-meter portion unless that is absolutely
> necessary, and I would consult with Don before doing anything.
>
> 73 from Tom Behler:  KB8TYJ
>
> ----- Original Message -----
> From: "Fred Adams"<[log in to unmask]>
> To:<[log in to unmask]>
> Sent: Sunday, May 01, 2011 2:18 PM
> Subject: Question on Alpha Delta DXCC Antenna
>
>
> Could any of you guys that have, or have used the DXCC antenna tell me if
> the other bands will be affected if I shorten the eighty meter portion of
> the antenna?  I was thinking of some changes on the  eighty meter portion of
> the antenna but I don't want to mess up the other bands on the antenna.
> Thanks much,
>