[CQ-Contest] Antenna Analyzer Expert

[Zack Widup]

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 at 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=k3lr.com at 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 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
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> >
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