I have an original N2PK VNA, a Rig Expert AA-55 Zoom VIA, a DG8SA VNWA and a
DG5MK FA-VA5 VIA.
For field use, if you can get by operating a fairly complicated instrument with
just three buttons, the latter is the best of the bunch IMHO.
1) It is very portable2) It can be OSL calibrated over its full frequency
range one time (similar to a master cal in the DG8SAQ)3) It displays SWR,
Smith Chart and tabular values.
4) Multiple measurements can be saved and imported via USB to the VMWA
software, which is amazing.
5) It can be a "test head" operated with the VNWA software.6) And not least,
you can read the display in sunlight, although this is a time when I need my
bifocals.
Wes N7WS
On Wednesday, February 8, 2023 at 03:36:55 PM MST, K8LX <lists@oakcom.org>
wrote:
YES, absolutely. That mode plus the stub length calculations are
extremely useful. The beauty of these self contained analyzers is how
easy they are to use in the field. My only wish, though minor, would be
the ability to store multiple OSL calibrations like one can do with the
professional (expensive) VNA's (Anritsu, etc.).
-Steve K8LX
On 2/6/2023 9:09 PM, Alex Filippov wrote:
> RigExpert has *All Parameters Mode* when it will display the R, X and the
> Resonant Frequency. This is the most useful screen for tuning an antenna.
> You can move up and down the frequency to see R and X at different points.
> The same screen shows SWR calculated for the impedance set in the settings
> of the Rig Expert. You can see it to 25, 50, 75 and 100 Ohm
>
> Alex, WK1O
>
>
>
> On Mon, Feb 6, 2023 at 8:55 PM<john@kk9a.com> wrote:
>
>> I have never used a RigExpert analyzer but according to the manual (page 8)
>> there is a data screen that will display the various parameters. If you're
>> trying to attach only an SWR chart, it's pointless. Does the Hy-Gain
>> vertical come with any type of matching device or does the antenna just
>> rely
>> on high ground losses for low SWR?
>>
>> John KK9A
>>
>>
>> Test 2019 K7OGW wrote:
>>
>> Hi Al and all,
>> I recently bought a RigExpert AA-230 ZOOM and that's what I measured the
>> SWR
>> with. I haven't had a chance to figure out, or use the other features yet
>> but it's high on my To-Do list. Here's a copy of the attachment that didn't
>> make it on TowerTalk. I'm not sure if I can send attachments via TowerTalk.
>> Thank you for your replies. I really appreciate it!
>> Dennis - K7OGW
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