Frequently Asked Questions

You can submit your inquiry easily through our contact form or by email to info@bq-microwave.de. Please include the desired manufacturer, model, and quantity if known. If you're not sure which product to choose, just share your technical requirements with us – we'll validate the specifications and advise you on the best selection. We typically respond within one business day with a detailed quote.

Yes. The minimum order value is 250 € net. For orders below this amount, we charge a 25 € small order handling fee. This covers our administrative and logistics costs for very small shipments.

We serve research institutes, universities, defense and satcom manufacturers, 5G/6G development labs, and OEM manufacturers in test & measurement and EMC. We do not serve private retail customers.

Yes. For research and development projects, we offer samples or evaluation boards depending on the manufacturer and component. Contact us with your application details, and we'll check availability with the manufacturer.

There is no standard lead time across all products. Stock items from the USA and China can often be delivered within 1–2 weeks. Non-stock coaxial components – modules, cables, switches, amplifiers – typically require 4–6 weeks. Non-stock modules and systems in the millimeter-wave range need around 8–12 weeks. We provide exact delivery times for your requested products in our quote.

Yes. Our prices include 3.7% import duty. You receive your goods without any further customs handling – DDP (Delivered Duty Paid), delivered within the EU.

Yes. We deliver to all EU countries as well as Switzerland, Norway, and the United Kingdom. Our sales territory covers all of Europe including the UK.

We use antistatic, individually protected packaging for RF and microwave components according to each manufacturer's guidelines. Shipments are sent via air freight (international) or UPS, DHL Express, or DPD (Europe) – always with full tracking and insurance.

Standard payment is by bank transfer on invoice. For first-time orders or specific cases, we may require prepayment. We do not offer credit cards, PayPal, or direct debit in B2B transactions.

Our standard payment term is 14 days net from invoice date. Custom payment terms can be arranged individually.

We carry over 17 specialized manufacturers in RF, microwave, and millimeter-wave technology, including AT Microwave, Vaunix, TMYTEK, Magvention, Elmika, SHX, Rofea, and many more. A complete overview can be found on our manufacturers page.

Our portfolio ranges from DC to over 1,700 GHz (WR-0.65). In waveguide, we cover all standard bands from WR-2300 to WR-0.65. In coaxial, we deliver up to 145 GHz.

We supply waveguide components in all common WR sizes from WR-2300 to WR-0.65, as well as in broadband WRD double-ridge standards from WRD-180 to WRD-180C24. A complete overview of WR and WRD standards with frequency ranges can be found in the next question.

The WR designation (Waveguide Rectangular) follows the EIA standard and describes the internal dimensions of a rectangular waveguide. The number corresponds to the wide inside dimension in hundredths of an inch – WR-10 means 0.10 inches or 2.54 mm. As the WR number decreases, usable frequencies increase, because smaller waveguides can guide higher frequencies. The following table shows all common WR standards from 320 MHz to 1.7 THz with their frequency ranges and typical applications:

WRD stands for Waveguide Rectangular Double-Ridged – a rectangular waveguide with two internal ridges that enables significantly wider usable bandwidth than standard WR (typically 2:1 to 3.6:1). The number in the designation indicates the lower frequency limit in 100 MHz – so WRD-350 starts at 3.5 GHz. WRD waveguides are used where broadband transmission in a single waveguide is required, such as in EMC antennas, test setups, broadband amplifiers, and measurement systems.

We supply components with all common RF and precision connectors: SMA (up to 18 GHz), 3.5 mm (up to 26 GHz), 2.92 mm / K (up to 40 GHz), 2.4 mm (up to 50 GHz), 1.85 mm / V (up to 67 GHz), 1.0 mm (up to 110 GHz), as well as waveguide flanges in all standard sizes. Which interfaces are available for your specific model can be found in the respective datasheet – feel free to contact us.

Yes, and we cover the entire 5G/6G spectrum. For 5G FR1 (Sub-6 GHz), Wi-Fi, and the lower FR2 segment, we deliver USB-programmable test components from Vaunix – attenuators, phase shifters, and switches as well as signal generators with a frequency range of 0.5 MHz to 40 GHz, ideal for channel simulation, phased-array testing, and local oscillator applications. For 5G FR2 (mmWave), TMYTEK offers complete FR2 coverage from 24 to 44 GHz with the BBox beamformer and UD-Box frequency converter family, including all relevant n257–n261 bands. For 6G research in D-Band (110–170 GHz, WR-6.5) and above, we carry mmWave modules from AT Microwave, Magvention, and Elmika, plus matching waveguide components extending into the sub-THz range. This means we cover 5G/6G from Sub-6 GHz testing through FR2 beamforming to submillimeter research in a single portfolio.

Yes. Many of our manufacturers produce custom components – whether in frequency range, power, connectorization, or mechanical design. Contact us directly with your requirements, and we'll assess feasibility and obtain a quote from the manufacturer.

Datasheets are typically provided together with the quote. They can always be requested by email or are available for download on the respective manufacturer's product pages. CAD models (STEP/IGES) are provided upon request in coordination with the manufacturer.

A coaxial line carries the signal via two concentric conductors (inner and outer conductor) – it is flexible, compact, and usable up to approximately 110 GHz. A waveguide, on the other hand, is a hollow, typically rectangular metal channel in which electromagnetic waves propagate. Waveguides have significantly lower losses, handle higher power levels, and are the standard in the millimeter-wave range (typically from 26 GHz upward). Coaxial is used in cabling and lower frequencies, while waveguide is used in mmWave, satcom, and THz applications.

Yes. We see ourselves not just as a reseller, but as a technical partner and advise you on component selection, waveguide sizing, frequency planning, and interface choices within our capabilities. For deeper technical questions, software topics, or application-specific specialized issues, we directly involve the respective manufacturers to ensure you get the best possible answer.

The respective manufacturer's warranty conditions apply, typically 12 months from delivery. Extended warranty periods are usually available for an additional fee and by individual agreement with the respective manufacturer – please let us know during the quotation process if you're interested. In case of a warranty claim, we handle the entire process for you: you send us the goods, we coordinate with the manufacturer, and deliver replacement or repair.

bq-microwave was founded in 2011 and has since operated as a specialized European distributor for RF, microwave, and millimeter-wave components. Today we represent over 17 manufacturers throughout Europe.

Our headquarters is in 71549 Auenwald, Germany (Hohe Str. 23). From here we serve customers throughout Europe.

Primary communication languages are German, English, and Dutch. Our website is available in 12 European languages – we can respond to written inquiries in any of these languages.