Antennas and Industrial IoT devices

We provide test & measurement equipment to test in-building communication capability important for first responders and to certify buildings meet certain in-building wireless communication standards. We provide test & measurement equipment to test public safety networks, including P25, Tetra and digital mobile radio ("DMR").

Antennas & Industrial IoT Devices $ 18,653 $ 16,686 $ 1,967

Antennas & Industrial IoT Devices $ 53,310 $ 43,971 $ 9,339

Sales and marketing expenses include costs associated with the sales and marketing employees, product line management, and trade show expenses.

Sales and marketing expenses increased $1.4 million for the nine months ended September 30, 2022 compared to the same period in 2021 due to higher employee-related expenses, higher travel and marketing expenses, and the inclusion of nine months of Smarteq's expenses.

General and administrative expenses include costs associated with general management, finance, human resources, IT, legal, public company costs, and other operating expenses to the extent not otherwise allocated to business segments.

General and administrative expenses increased by $0.9 million for the three months ended September 30, 2022 compared to the same period in 2021, primarily due to increased expenses for cash-based incentive compensation programs.

General and administrative expenses increased by $1.2 million for the nine months ended September 30, 2022 compared to the same period in 2021 due to increased expenses for cash-based incentive compensation programs and inclusion of nine months of Smarteq's expenses.

Cash and cash equivalents at the end of period $ 5,858 $

Short-term investments at the end of period $ 22,147 $

Within operating activities, we are historically a net generator of operating funds from our income statement activities. During periods of expansion, we expect to use cash from our balance sheet.

and working capital for the next twelve months from the date of the Quarterly Report on Form 10-Q to support our operations given our historic ability to generate free cash flow (cash flow from operations less capital spending).

Our material cash requirements from known contractual and other obligations primarily relate to non-cancelable purchase obligations. Expected timing of those payments are as follows:

Critical Accounting Policies and Estimates

We use certain critical accounting policies as described in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations - Critical Accounting Policies and Estimates" of the 2020 Form 10-K. There have been no material changes in

any of our critical accounting policies since December 31, 2021. See Note 1 to the Condensed Consolidated Financial Statements for a discussion of recent accounting pronouncements.

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