shortening it will make it worse not better  te lower frequency bands require MORE not less length

73 kb7nla
On Dec 10, 2011, at 10:23 AM, Fred Adams wrote:

> I am not having the same problem with my IMAX as you seem to have.  It
> works very well on 10 thru 17 meters but not to good on 20 meters.  I am
> thinking of shortening the antenna and I believe it will work better on
> 20 meters.  Remember, it is a CB radio antenna but many ham radio
> operators are using it with good success, including myself.  I find that
> it is fairly quiet on my station.  It has a ring at the bottom of the
> antenna for some adjusting.
> 
> FRED ADAMS W4HC
> 
> 
> -----Original Message-----
> From: For blind ham radio operators
> [mailto:[log in to unmask]] On Behalf Of Howard Kaufman
> Sent: Saturday, December 10, 2011 9:37 AM
> To: [log in to unmask]
> Subject: imax-2000 continued.
> 
> As I would have suspected, the imax is a great transmitting antenna.
> Receive is not as good.  True, if I can hear it I can work it, but the
> noise floor is higher.  I am wondering if I ground this mast to an earth
> ground, if that will help.  The noise is a constant s8 on fifteen meters.
> The vertical doesn't get out well on 20, but is s units better than the
> zepp on
> 17 and up.  I have never used a vertical before.
> H T Kaufman MSW LCSW
> Adaptive Technology Instructor