This is a Sources Sought notice for market research, not a solicitation for bids or proposals. The 179th Contracting Office, supporting the 278th Cyber Operations Squadron in Ohio, seeks a Keysight PNA-X Pro Vector Network Analyzer (26.5 GHz) or an exact functional equivalent for cyber-physical RF testing. Any alternative must natively execute existing Keysight API commands without translation software or requiring the government to rewrite test scripts. Performance of services is not specified, and no budget amount is provided. Responses are due by 1:00 PM EST on 20 July 2026.