Seeed SARK-110 Antenna Analyzer
Seeed SARK-110 Antenna Analyzer
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Product Description
Whether you’re tuning antennas, cutting coaxial cables to precise electrical lengths, or trying to trace signals, the Seeed SARK-110 antenna analyzer provides plenty of utility. Though it comfortably fits in a pocket, the analyzer offers a frequency range from 0.1 to 230 MHz with 1 Hz of resolution—not to mention it’s got full vector measurement capability and accurately resolves the resistive, capacitive, and inductive components of a load ... Read More

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akarsner
182
May 11, 2019
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I was considering using this at my company's newest office buildout... the central IT team on the east coast totally botched the RF assay so we have people on site getting pinned to AP's all the way across the building and completely shit connection speed asa a consequence. Discovered that they have every single AP in the mesh transmitting at highest power level available... le-sigh. Now that the original team has long-since returned to their home offices, I will be the only on-site engineer with the experience needed to correct their mistake. Can this be used properly as a WiFi analyzer as well in this use-case with the sold separate N adapter? Please advise.
May 11, 2019
akarsner
182
May 13, 2019
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They’re multi-banded for both 2.4GHz and 5.1GHz signaling, but are broadcasting at maximum transmit power and via the same channels (single channel per frequency class) as their adjacent APs. So the detailed explanation is that the misconfiguration explained above causes a ton of interference in the overall mesh design because each AP is more or less trying to shout over their neighbors at the top of their lungs. This leads to a high number of packet retries for send/rcvs for each AP, and all on the same broadcast channel, resulting in very slow connection speeds for clients due to the very small amount of remaining airtime for regular traffic. The secondary side effect of the above is that we currently have major problems with clients being stuck to the first AP that a client device detects and successfully connects with, instead of being handed off to the next nearest AP as a client moves about the service perimeter, as would be expected of a mesh style wifi infrastructure design. The symptom is observed when say, two clients of the same device type are sitting in the same team meeting, and the connection speed of one user is substantially better than that of another client also attending the same meeting. From a client perspective, there isn’t a whole lot to show why this is the case, but from the administration controller side, you can see that while both clients are in the same room, client 1 is connected to a nearby access point because that is the first time they opened their laptop for the day, and client 2 is connected to the AP closest to the parking garage because they opened their laptop upon parking to check on some sales details before taking a call. Whew, that was a lot to type, but that is the gist of what I’m trying to solve for our newest office. The only tool I am missing is a Wi-Fi spectrum analyzer which is what I was hoping this Drop would handle, since they’re normally pretty expensive. I want to get the expense of the tool reimbursed, so trying to find a reasonably priced one for justification reasons. Thanks for the input! TLDR this definitely won’t work for our needs.
May 13, 2019
TipsyMacScotchslurpen
325
Jun 15, 2019
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Yeah, besides being used as an antenna analyser, and not a spectrum/frequency analyser, this device only covers up to 230MHz. You'd need something that could cover up to around 6GHz (I think 5GHz WiFi covers channels from 5180 to over 5900MHz with little gaps here and there, or something like that?). Most WiFi frequency analysers aren't so wideband, though. They generally consist of separate 2.4GHz and 5GHz analysers in one package, without any support for frequencies in between. BTW, just thought I'd throw this comment in there for others looking through the comments, not because you needed me to comment on this further. :)
Jun 15, 2019
MaxHedrm
2
Mar 31, 2019
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What's actually included isn't clear, but on sark110.com it says it includes an MCX to SMA adapter and as SMA plug to SMA female 8” extension. The accessory I'd really like to add is the SMA to N adapter - it would save me having to get it later. :-) https://www.seeedstudio.com/SMA-N-adapter-SMA-Plug-to-N-Jack-straight-p-1530.html
Mar 31, 2019
anquilan
0
Mar 31, 2019
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Good bargain. Steppir (I think they are the original producer of the product) is selling theirs for $389. They are also selling the accessory kit that includes connector adapters, calibration set and a pigtail.
Mar 31, 2019
MaxHedrm
2
Mar 31, 2019
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It looks like Steppir is the US distributor, Seeed sells it for $360 Globally. So yeah, quite good deal.
Mar 31, 2019
HeavyDuty
7
Feb 13, 2019
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No mention of a warranty?
Feb 13, 2019
akarsner
182
May 11, 2019
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Standard Drop warranty policies and disclaimers apply, found HERE.
(Edited)
May 11, 2019
KagurazakaX
1
Dec 19, 2018
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It's almost 9102 and you can still see a new released device which using MINI USB input.
Dec 19, 2018
N2MOH
5
Dec 18, 2018
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I found this video that has more information... https://www.youtube.com/watch?time_continue=0&v=9JihpHMQgog

Dec 18, 2018
KE4RZ1
8
Dec 18, 2018
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A picture of the rear of the unit would be nice to show what type of connectors it supports. I know that most connectors can use adapters to make them work. It would still be nice to see for sure. I have ham radio background so this is the sort of thing would matter to most HAM's. $250 is a bit steep though since there are already antenna analyzer's on the HAM market that are in that range or actually cheaper. Digital MFJ brand tuner's have been on the market since the 90's.
Dec 18, 2018
MaxHedrm
2
Mar 31, 2019
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MFJ's Color graphic analyzer appears to be HF only and is $299. A RigExpert that's similar to this is $440. The video that N2MOH does do a good job of showing the device & how it works. There's also more info at the SARK-110 site - http://www.sark110.com/home
Mar 31, 2019
RayF
9722
Aug 11, 2018
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Who uses this? What kind of antennas are applicable?
Aug 11, 2018
MassDing
5
Sep 11, 2018
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Hobbist engineering & students. Some bands under 240mhz are both licensed and public bands. CB , HAM, AM FM, Marine, police, fire older VHF
Sep 11, 2018