Rigid Coaxial Lines – configure your transmission line
RF signals are routed from the transmitter to the antenna through coaxial cables with air or foam dielectric, rigid coaxial lines or through rigid waveguides with a square, round or elliptical cross-section.
The size of the cables and rigid lines varies depending on the power to be transmitted and on the frequency range. For such coaxial rigid lines SPINNER supplies the flanges, straight rigid lines, elbows, inner supports, coupling elements, gas barriers and adapter pieces as well as trimming lines, direct access units and phase shifters to adjust and measure the lines.
SPINNER delivers different types of rigid line systems called EIA system, SMS system and flaring technique system (BT).
The indicated technical data are also valid for the rigid line elbows, which have a remarkable better performance related to the values in the relevant international standards. The proof voltage values refer to sea level. For a RF power more than 80 % of the indicated maximum average power we recommend to paint the rigid line with a black heat resistant varnish to reduce the outer conductor temperature.
EIA system
Coaxial flange connectors, generally known as “EIA flanges”, are connected by a coupling element. The flange connector system is standardized according to EIA STD RS-225, 339 IEC, DIN EN 122150 and MIL-F 24044. The EIA flange
connectors are excellently qualified for pressurized systems and for outdoor installation.
SMS system
The SPINNER quick clamp system called SMS is based on the international rigid line standards like EIA STD RS 225, 339 IEC and DIN EN 122150. The different parts are connected by coupling elements and fixed together with clamps. The advantage of the SMS system is that the customer can easily cut the rigid line to length on site, without flaring or brazing. The assembly is therefore very simple and no special tools are required. The SMS system is provided solely for indoor installation.
Flaring technique system (BT)
The outer conductor tube is flared by using a SPINNER flaring tool. The different components are connected together with coupling elements. The electrical contact at the outer conductor is done via a metallic ring which is mounted on periphery of the insulation disc of the coupling element. The very stable connection ensures a high RF tightness and repeatable electrical length. The 52-120 BT flaring technique system is provided for indoor application and is designed to handle the maximum RF power up to 860 MHz.
Remark: Please take into consideration that for straight rigid lines inner supports are necessary depending on the wanted line length. The inner supports prevent the inner conductor from sagging.
If you can’t find your rigid coaxial lines according to your specifications online, please contact our sales team with the specification needed per email or select one of the displayed rigid coaxial lines for a Quote Request and add your special requirements in the comment field of the form before submitting.
