[CQ-Contest] Antenna Analyzer Expert

[Barry Jacobson]

Hi, thanks for the info. Does the Rig Expert do whatif scenarios? If it
makes measurements of my current setup, will it let me know the effects of
shortening or lengthening the feedline without actually doing it?

Thanks very much.

Barry WA2VIU

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

On Mon, Feb 6, 2023, 4:51 PM Hans Brakob <kzerohb at gmail.com> wrote:

> I second the motion on *Rig Expert*.  I have the AA-55 Zoom because I
> play up through 6 meters, but the AA-35 Zoom would be fine choice if you
> only worry about MF/HF.
>
> Quite versatile, easy to learn/interpret, and accurate.
>
> 73, de Hans, KØHB
> “Just a Boy and his Radio”™
> ------------------------------
> *From:* CQ-Contest <cq-contest-bounces+kzerohb=gmail.com at contesting.com>
> on behalf of Zack Widup <w9sz.zack at gmail.com>
> *Sent:* Monday, February 6, 2023 7:39:42 AM
> *To:* Barry Jacobson <bdj at alum.mit.edu>; CQ Contest <
> cq-contest at contesting.com>
> *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 at 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 at alum.mit.edu
> > @bdj_phd
> > _______________________________________________
> > CQ-Contest mailing list
> > CQ-Contest at contesting.com
> > http://lists.contesting.com/mailman/listinfo/cq-contest
> >
> _______________________________________________
> CQ-Contest mailing list
> CQ-Contest at contesting.com
> http://lists.contesting.com/mailman/listinfo/cq-contest
>