Most WISP owners never think of their radio vendor as part of the business. Buyers are about to.
In September, Cambium Networks went from the clear number two in fixed wireless radios to an insolvency case. The product line most small operators run on was left out of the rescue.
If you own a fixed wireless network, your WISP valuation just picked up a new line item.
What happened to Cambium
Cambium cut 260 employees, 53.6% of its workforce, without severance. Its U.K. operating company went into administration. The parent had already been delisted from Nasdaq after falling behind on its filings, and a May filing warned of "substantial doubt" about its ability to continue as a going concern.
On September 22, Airspan bought a set of Cambium product lines for $27.5 million in cash plus up to $7.5 million contingent: PMP 450, PTP 670, PTP 700, cnWave, cnReach, and the LINKPlanner, cnHeat, and cnMaestro software, along with more than 135 Cambium employees.
ePMP was not in the deal. The next day a Cambium representative told users on the company's community forum: "Cambium is still looking for a buyer for the ePMP segment. If a buyer cannot be found soon, that segment will be liquidated."
Why it lands on smaller operators
ePMP is the radio that built a large share of rural fixed wireless. When it launched in 2013, it sold for roughly $300 where competing equipment cost $3,000. That let small operators grow tower by tower on their own cash flow.
It is still everywhere. Preseem's 2026 ISP network report, as cited by RCR Wireless, put Cambium at 39.5% of connected subscriber devices in its dataset, behind only Ubiquiti.
And the radios do not mix. As analyst Adlane Fellah wrote in RCR Wireless, "a subscriber module from one vendor does not talk to an access point from another." Leaving a platform means replacing the access point and every subscriber radio on that sector, with a truck roll to each home.
The gear in the field still works today. What changed is how long anyone will patch it, supply spares for it, or answer the phone about it.
What it does to WISP valuation
Every buyer of a fixed wireless network now asks the same early question: what is it running on?
A network with a large ePMP footprint will be underwritten with a migration plan attached, whether or not the owner has one. The buyer will count sectors and subscriber radios, estimate replacement equipment and installs, and assume some churn during the cutover. That number comes off the price, usually with a margin for uncertainty on top.
That is not a penalty. It is arithmetic. The capital needed to keep the network current is the same whether the owner spends it or the buyer does. The difference is who controls the estimate.
The owners who come out well will be the ones who present the number before the buyer builds it.
What to do in the next 90 days
The work is the same whether you sell next year or never:
- Inventory the network. Every access point and subscriber module by model, firmware, sector, and subscriber count. Diligence starts here.
- Secure access to your radios. Make sure you can reach and manage the gear directly, without depending on a vendor's cloud controller.
- Buy spares now. Access points and subscriber modules for your critical sectors, while stock is still on the shelf.
- Price the migration. Sector by sector, with equipment, labor, and expected churn. Sequence it by revenue at risk.
- Decide who funds it. Your own cash flow, a lender, a partner, or a buyer. Each choice sets a different price for the business.
Our WISP Owner's Guide to Strategic Exits covers how buyers value fixed wireless networks and the ways an owner can sell, merge, or recapitalize.
Where we sit
Standard consolidates independent broadband and telecommunications infrastructure across North America: fixed wireless operators, fiber networks, and the assets around them. We look at networks for what they will be after the capital goes in, including equipment transitions like this one.
For some owners, the right answer is to fund the migration and keep going. For others, it is to bring in a partner who can fund it and keep the team and the customers in place. Either way, the decision is better made with a plan in hand than on a deadline set by a vendor.
Vendor risk used to be an engineering problem. Now it is a valuation problem.
General commentary on infrastructure markets. Not an offer to sell or a solicitation of an offer to buy any security, and not investment advice.
