Who it’s for
Antennas of any make
Whether you run a test laboratory or test your products in-house, we provide accredited calibration of your antennas from 500 MHz to 40 GHz, a solid, documented basis for every result you report.
Gain, antenna factor and reflection coefficient, calibrated in our ISO/IEC 17025 accredited laboratory. Your calibration certificate carries the ČIA accreditation mark.
Whether you run a test laboratory or test your products in-house, we provide accredited calibration of your antennas from 500 MHz to 40 GHz, a solid, documented basis for every result you report.
RFspin Calibration Laboratory is accredited by the Czech Accreditation Institute (ČIA) to ČSN EN ISO/IEC 17025:2018 as Calibration Laboratory No. 2433. ČIA is a signatory to the EA MLA and the ILAC MRA, so certificates issued under our accreditation are recognized in all signatory countries.
Scope of accreditation
500 MHz – 40 GHz
Frequency range
0.7 dB
Best expanded uncertainty
Three-antenna method
Calibration method
Measurement distance 1 m (SAE ARP 958E, ch. 4) or 3 m (ANSI C63.5, ch. 5). Gain from −10 to 40 dB, antenna factor from −16 to 72 dB(m⁻¹). Best expanded uncertainty 0.7 dB at 3 m and 0.8 dB at 1 m; a particular calibration may have a higher uncertainty.
Scope of accreditation
500 MHz – 40 GHz
Frequency range
0.21 dB
Best expanded uncertainty
Vector network analyzer
Calibration method
Reflection coefficient from 0 to −35 dB. Expanded uncertainty 0.21 dB (0 to −6 dB), 0.41 dB (−6 to −15 dB), 1.4 dB (−15 to −25 dB) and 4.1 dB (−25 to −35 dB). VSWR is reported for information only, outside the scope of accreditation.
Our accreditation (certificate No. 453/2026, valid until 6 October 2029) covers the quantities and ranges listed in the annex to the certificate.
Download the scope of accreditation (PDF)Calibration certificate bearing the ČIA accreditation mark, with results and expanded uncertainty (EA-4/02 M:2022, k = 2), procedure, equipment, environmental conditions and metrological traceability, as an electronically signed PDF
Calibration results as an Excel file (XLSX), with any values outside the scope of accreditation clearly marked
A private link to download both files from the RF SPIN Antenna Portal
Our Head of Laboratory, Dr. Václav Kabourek, reports directly to the CEO, independently of RF SPIN production and sales. The laboratory runs its own quality system. Our impartiality statement is signed by the laboratory management, and we provide it on request.
Details on the laboratory pageEqual treatment. The same documented procedures and uncertainty evaluation apply to every antenna we calibrate.
Reviewed before release. Every calibration certificate is checked and signed by authorized staff before it is issued.
Confidential by default. Your data and results are not disclosed without your consent, except where the law requires it.
Externally assessed. ČIA reviews us at regular intervals, and we take part in interlaboratory comparisons.
Describe your antenna and what you need. We then propose the scope of calibration.
We send the price and a proposed date. Work starts only after you approve.
We calibrate your antenna using the method and scope agreed in the quotation.
We ship your antenna back and send you a private link to download the calibration certificate and results.
We accept antennas up to 1 m in size with N, SMA, 3.5 mm or 2.92 mm (K) connectors. For anything else, ask us before you ship.
Once you have accepted the quotation, ship your antenna to:
RFspin Calibration Laboratory
Kumburský Újezd 112
509 01 Nová Paka
Czech Republic
Calibrating several antennas of the same type? Send them together: they share one setup, and we quote a better price.
Pack your antenna so that it cannot be damaged in transport. If the calibration needs accessories such as holders, mounts or a power supply, we agree on them with you in advance and you send them with the antenna. Shipping to us and back is at your cost. Shipping from outside the EU? Contact us first and we will agree on the customs documents with you.
Practical details
2 weeks
Typical turnaround
1 m
Maximum antenna size
Our team works with antennas every day and understands the setup effects that influence calibration results.
Network analyzers, signal generators and receivers from Anritsu, Rohde & Schwarz and Keysight, calibrated with metrological traceability under our quality system.
No customs formalities or import duties for antennas sent from other EU countries.
RFspin Calibration Laboratory has its own page with our contact details, the certificate and scope of accreditation, the complaints procedure and the measurements we offer outside the scope of accreditation.
More about RFspin Calibration LaboratoryDescribe your antennas and what you need measured in the form. We reply with a proposed scope of calibration and a quotation. A plain email to the laboratory works too.
Leads RFspin Calibration Laboratory in Nová Paka.
Email the laboratory