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Re: [CQ-Contest] Antenna Analyzer Expert

To: cq-contest@contesting.com
Subject: Re: [CQ-Contest] Antenna Analyzer Expert
From: Yuri <ve3dz@rigexpert.net>
Date: Mon, 6 Feb 2023 20:32:59 -0500
List-post: <mailto:cq-contest@contesting.com>
In the past few years Smith Chart was included in the main menu of all recent models of RigExpert Antenna Analyzers.
The end user may select either Polar or Smith chart in the User Menu.

In the U.S.A. all major HAM Radio gear vendors carry these analyzers:
https://rigexpert.com/where-to-buy/

73, Yuri VE3DZ

On 2/6/2023 8:10 PM, Tim Duffy wrote:
Hello Zach

I have a AA-230 Zoom here – it has a Smith Chart. Stock. Please tell me more 
about what option you are talking about.

73

Tim K3LR

From: Zack Widup [mailto:w9sz.zack@gmail.com]
Sent: Monday, February 6, 2023 7:17 PM
To: Tim Duffy
Cc: Barry Jacobson; CQ Contest
Subject: Re: [CQ-Contest] Antenna Analyzer Expert

I don't believe you have the ones with the Smith Chart option, though.

73, Zack W9SZ

On Mon, Feb 6, 2023 at 5:28 PM Tim Duffy <k3lr@k3lr.com> wrote:

All of these RigExpert analyzers (with latest firmware options) are
available - in stock - at DX Engineering

73
Tim K3LR
@DX Engineering
-----Original Message-----
From: CQ-Contest [mailto:cq-contest-bounces+k3lr 
<mailto:cq-contest-bounces%2Bk3lr> =k3lr.com@contesting.com] On
Behalf Of Zack Widup
Sent: Monday, February 6, 2023 8:40 AM
To: Barry Jacobson; CQ Contest
Subject: Re: [CQ-Contest] Antenna Analyzer Expert

I highly recommend the RigExpert analyzers. I got an AA-600, which may be
more than you need but I do a lot of work on VHF. If you're mainly
interested in HF, the AA-35 ZOOM should fill your needs. I got the unit
with the Smith chart option. I believe you have to order these directly
from the RigExpert site, not from a dealer.

73, Zack W9SZ

On Mon, Feb 6, 2023 at 2:41 AM Barry Jacobson <bdj@alum.mit.edu> wrote:

Hi, I need advice on getting one of the antenna analyzers on the market. I
have an 80 meter dipole fed with ladder line from an MFJ 989D tuner. I
seldom use 10 meters, but tried to go on the 10-10 phone contest today.
Would not tune in that segment of band. Tuner instructions say most
commonly need to shorten feedline by 1/8 wavelength at band that won't
tune. Before cutting line and possibly messing up other bands that work
fine, I would like to know exactly where I stand on each band. I could use
a device that will tell me exact length of line currently, and what effect
shortening will have on all other bands, and whether the new impedances
will be within range of capability of tuner. I don't mind learning complex
impedances and Smith charts if necessary, but want to do it
systematically.
Don't know if devices out there do this for you. Some possibilities I have
heard of are NanoVNA, Rigexpert, MFJ antenna analyzer. I don't know if I
should go on EZNEC. The last 15 feet of each end of dipole droop
vertically, but don't think that's the main problem.

There is a whole page of devices. Don't know where to begin.

https://www.eham.net/reviews/view-category?id=31

Any advice from an expert greatly appreciated.

73,

Barry

--
Barry Jacobson
WA2VIU
bdj@alum.mit.edu
@bdj_phd
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