Steve:
Well, I'm no antenna expert, but I thought I remembered some precautions in
the instructions about this. I never did anything to mine, though, so can't
really speak from direct experience.
I guess this is why I'm encouraging Fred to contact Don at Alpha Delta
Engineering for specifics.
I'd rather be wrong in relation to what Don has to say, than be right after
Fred has altered the 80-meter wire and then regretted it. (smile)
You know what they say about cutting wires for antennas--measure twice, cut
once.
I guess my extra "measurement" is just one of caution.
Hopefully, Fred will let us know what Don says, and if I'm wrong, I'll be
happy to eat a little crow! (grin)
73 from Tom Behler: KB8TYJ
----- Original Message -----
From: "Steve Forst" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, May 01, 2011 10:21 PM
Subject: Re: Question on Alpha Delta DXCC Antenna
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,
>
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