If you came here looking for the best blood pressure monitor, I have to disappoint you. This isn't a consumer health article. It's about Anritsu Corp.'s handheld RF test gear: the Anritsu S332D and the Anritsu MS2721B.
I'm a procurement manager, not an RF engineer. I can't walk you through a Smith chart, and I'm not the person you should call when VSWR readings don't make sense. What I can do is compare these two instruments the way I'd compare any capital purchase: by looking at the total cost of ownership, not just the sticker price.
Over the past six years, I've tracked every invoice for our test equipment, including calibration, repairs, batteries, shipping, and accessories. I've built spreadsheets, compared quotes, and made a few mistakes along the way. This article is the comparison I wish I'd had before buying our first two Anritsu handhelds.
Most people assume the Anritsu S332D and Anritsu MS2721B are two versions of the same thing because they look similar in photos. They're not.
The S332D is a Site Master. It's built for cable and antenna measurements: return loss, VSWR, and distance-to-fault. The MS2721B is a Spectrum Master. It's built for looking at signals in the frequency domain, detecting interference, and doing spectrum analysis.
That one difference changes how you should compare them. You're not deciding which is better. You're deciding which troubleshooting jobs you actually have to do on a regular basis.
To keep this practical, I'm comparing them across four dimensions:
I'll give you my recommendation at the end, but it won't be buy the cheaper one. If there's one thing I've learned from tracking six years of purchase orders, it's that the cheapest quote often ends up costing the most.
This is the dimension where most people go wrong. I've seen a team buy the MS2721B because they thought spectrum analyzer sounded more capable than cable analyzer. Then they spent their budget on a tool that was great at signal hunting but awkward for verifying antenna lines.
The S332D answers questions like:
The MS2721B answers different questions:
Conclusion: If you work on transmission lines and antenna systems, the S332D is the right category. If you work on spectrum interference and radio-signal behavior, the MS2721B is the right category. Everything else is downstream of that decision.
I can't give you an exact current price for every configuration because prices change, and I'm not the official distributor. But I can tell you what I saw in January 2025, because I pulled quotes for a refresh of our small fleet.
One quote for a used Anritsu S332D came in at $3210. That included the analyzer, a battery, a charger, the padded carry case, an RF cable, and a calibration certificate from a lab I trust. A second vendor quoted a lower price—around $2800—but when I asked for the itemized breakdown, the calibration certificate was extra, the battery was extra, and the carry case was extra.
Add those line items back and the cheap quote was actually about $500 higher than the $3210 quote.
This is where my transparency stance comes in. I've learned to ask what's NOT included before I ask what's the price. A vendor who lists all fees and accessories upfront, even if the total hurts to look at, is usually the vendor who costs less in the end. That's not a polite theory. It's a lesson I learned after two separate orders where the savings disappeared into calibration fees and missing accessories.
For the MS2721B, the pattern was the same, but the absolute numbers were higher. The MS2721B is a more complex instrument, and the used-market price range I saw was generally higher than the S332D. That's not shocking. What surprised me was the difference in calibration costs. The S332D usually needs a one-year calibration cycle; the MS2721B sometimes needs more careful validation because it's measuring lower-level signals. Don't hold me to a universal number, but put calibration line items into your spreadsheet before you compare quotes.
Here's something vendors won't tell you: a certificate that says calibrated is not the same as a calibration certificate with documented performance data. Ask for the full report. If a seller hedges, treat that as a future re-calibration cost.
Conclusion: The lowest initial quote is not the lowest total cost. Ask for itemized line items, calibration history, and accessories before you make a decision.
This is more than a matter of convenience. Field time is budget. If a tool makes your technician's job harder, you're paying for that difficulty in overtime, callbacks, and wrong diagnoses.
In general, the S332D is a simpler instrument to bring to a tower site. You connect the cable, run the sweep, and get the answer. The MS2721B is more flexible, but flexibility has a cost: more menus, more setup, more learning curve. It also uses more battery power because it's essentially a microwave receiver with a screen.
From my perspective, the MS2721B is the better buy if your team is already doing spectrum work. But if your team does 80% of its work on antennas and transmission lines, the S332D is the one that will actually get used. No one likes carrying a heavier instrument to a site when a purpose-built tool would do the job in ten minutes.
Wait—I should refine that. The price gap between the two isn't always that big, especially on the used market. But the workflow gap is real. The S332D feels like a purpose-built tool. The MS2721B feels like a general-purpose scanner. Both are useful. They are useful to different people on the same crew.
Conclusion: Match the instrument to the daily task. The most expensive device in your warehouse is the one that stays on the shelf while you still bill hours to find a fault.
This is the part that surprises people: sometimes I push a manager to spend more on the MS2721B even when they originally came to me looking for a no-frills S332D.
Why? Because if your problems are interference problems, the S332D won't solve them. It's not designed to detect a weak external signal. You could bring the S332D to a site, confirm every antenna and cable is fine, and still have no clue why the network is dropping. That's a wasted truck roll. If that happens twice, the MS2721B has already paid for part of its higher price.
I remember one purchase where we bought the cheaper cable analyzer because the budget was tight. A month later, we had to rent a spectrum analyzer for two days to characterize interference. The rental cost alone was close to 15% of what a used MS2721B would have cost us. I still kick myself for not thinking through the consequences before accepting the cheapest option.
That doesn't mean the MS2721B is always the right answer. If you don't need spectrum analysis, it's expensive weight. But if you're dealing with interference, price and value are not the same line item.
Conclusion: Consider the cost of the problem you haven't solved yet. A cheaper tool that can't diagnose the issue is not cheaper at all.
Here's the practical decision rule I use when I review purchase requests:
Also, if you came to this Anritsu telecom article because you actually wanted a review of the best blood pressure monitor, please don't buy an S332D because of this comparison. They are not the same category of device.
That line sounds silly, but I've seen weirder search patterns in our own analytics. We once got a support request from someone who bought a test tool instead of a consumer monitor because the product names overlapped. So: if you need a blood pressure monitor, this is not the article for you.
The Anritsu S332D and Anritsu MS2721B are both excellent tools, but they're excellent at different jobs. The S332D is a cable and antenna analyzer that fits a specific field workflow. The MS2721B is a spectrum analyzer that fits an overlapping but different workflow.
From a procurement standpoint, my advice is simple: build a spreadsheet with the full cost of each option, including calibration, accessories, and the cost of a second trip when the first tool can't find the fault. Ask every vendor what's included before asking for the price. Then choose the tool that matches the problems your team actually works on.
That approach has served me better than any generic this one is better review. It's also how I avoid budget overruns, and it's how I explain to my finance team why a $3210 quote was a better deal than a $2800 quote.
If you're comparing an Anritsu S332D and an Anritsu MS2721B, you're already thinking about the right thing: not which product has the better brand name, but which one solves your actual problem. That's exactly the kind of cost-conscious mindset that keeps test equipment budgets under control.