You guys can laugh all you want to,
but my MFJ-259, which is quite old,
maybe 15 years ?? Still works like
a charm.
73, Dick, W1KSZ
On Sat, Jul 9, 2016 at 9:59 AM, Jim Brown <jim@audiosystemsgroup.com> wrote:
> On Sat,7/9/2016 4:52 AM, Bill Cotter wrote:
>
>>
>> Attached is a marketing analysis of several handheld analyzers I did for
>> our ham club. It has links to the technical details.
>>
>
> The Tower Talk list does not support attachments.
>
> Hardy,
>
> You said you wanted something to drag to the top of a tower, but with this
> analyzer, you can easily get good data from anywhere on the feedline,
> including the shack.
>
> http://sdr-kits.net/VNWA3_Description.html
>
> I no longer climb anything higher than a stepladder, so I do all my
> measurements from the shack. It needs no power supply, getting its power
> from the USB port that connects it to the computer that processes the data.
> As an engineer, you will really appreciate it.
>
> It does TDR by computing the inverse FFT of a sweep, which can be set for
> any range that you choose for the level of detail you need. There's some
> math built into the control software, and it exports data in several
> formats, including s1p Touchstone files, which can be imported by SimSmith
> and ZPlots, among others. It's a full vector network analyzer, so it also
> measures S21.
>
> I paid $740 three years ago, shipped to my W6 QTH, with calibration loads
> and a case that I wouldn't order again. With the Pound in free fall, my
> guess is that you could buy it for about $650 today. It's a real winner.
> Well supported by the mfr (some hams in the UK) and the designer, DG8SAQ, a
> university EE prof who also wrote the software.
>
> 73, Jim K9YC
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