SIVA RF 400 UF-PVC low loss Koaxialkabel 10,3 mm Das RF400 UF ist eine sehr gute Alternative in der 10,3mm Koaxialkabelklasse und für den Frequenzbereich bis 3 GHz geeignet. Dieses doppelt geschirmte Koaxkabel, hat eine geringe Dämpfung und gute Flexibilität. Der Innenleiter wird aus 7x1mm Drähten gefertigt. Das Geflecht, umschließt die kunststoffbeschichtete Kupferfolie, mit einem Bedeckungsgrad von 78%.  Die gravierenden Unterscheide zu einem RG58U, haben wir in einem Artikel ausführlich, mit vielen realen Beispielen beschrieben: zum Artikel Eigenschaften Sehr flexibel Für Rotorbetrieb geeignet Innenleiter mit 7 Drähten (7x1mm) Für Frequenzen bis 3 GHz geeignet UV-beständig Es können viele RG-213 übliche Antennenstecker genutzt werden. Schirmung: > 80dB (100-900 MHz)> 70dB (900-2000 MHz)> 60dB (2000-3000 MHz) Kabelaufbau: Innenleiter: Kupfer, 7x1,0 mm, Ø 2,9 mm ± 0,05Dielektrikum: PE geschäumt, PEG Ø 7,3 mmAußenleiter 1: Kupferfolie, kunststoff beschichtetAußenleiter 2: Kupfergeflecht, opt. Bedeckung 73%, 112 Drähte Außenhaut: PVC, hoch flexibel, Ø 10,2 mm ± 0,15 mm UV-resistent Kabelgewicht: Kilogram per Kilometer: Kupfer: 81.0 kg / km Kunststoff: 63.8 kg / km Gesammt: 144.8 kg / km Dämpfung bei 20°C (dB x 100 meters) 5 MHz - 1.1dB10 MHz - 1.5dB50 MHz - 2.9dB200 MHz - 6.0dB500 MHz -10.3dB800 MHz - 13.2dB1000 MHz - 15.0dB3000 MHz - 28.1dB Komplettes Datenblatt: DownloadInformationen gemäß Art. 19 GPSR SI.VA SRL - Via Vittorio Veneto, 63 - 24040 Bonate Sotto (Bergamo) Italy Tel. 035 991085/86 - siva@sivacavi.it - https://sivacavi.it/ Verantwortliche Person: SI.VA SRL - Via Vittorio Veneto, 63 - 24040 Bonate Sotto (Bergamo) Italy Tel. 035 991085/86 - siva@sivacavi.it - https://sivacavi.it/

The AIRBORNE 10 /.400″ by Messi & Paoloni is a state-of-the-art, high-end coaxial cable designed for radio amateurs, professional radio applications, and demanding RF installations. Engineered for maximum performance with minimal losses, this 10.3 mm coaxial cable sets benchmarks in its class—especially for outdoor use and long-term operation. Extremely Low Attenuation – Measurably Better One of its standout features is the exceptionally low signal attenuation: only 19 dB / 100 m at 2400 MHz, measured on a 10.3 mm coaxial cable. This results in higher field strength, improved reception quality, and greater efficiency—particularly at high frequencies and over long cable runs. Designed for Direct Burial & Outdoor Use The AIRBORNE 10 is completely waterproof and specifically designed for direct burial in the ground. Its rugged, tear-resistant PE outer jacket reliably protects against moisture, UV radiation, temperature fluctuations, and mechanical stress—ideal for permanent outdoor installations without additional protective conduits. Lightweight, Robust, and Superior Shielding Despite its 10.3 mm diameter, the AIRBORNE 10 is approximately 45% lighter than comparable 10 mm coaxial cables, making installation and routing significantly easier. The ultra-dense copper braid consisting of 192 strands provides excellent shielding effectiveness, substantially reducing background noise and interference—an obvious advantage for receive-critical locations and DX operation. Cable Selection Tip Coaxial cables with a solid center conductor—such as the AIRBORNE 10—are ideal for fixed installations, as they exhibit lower losses than cables with stranded conductors. 👉 For very tight bend radii or rotor-mounted antennas, we recommend the ULTRAFLEX 10, which is specifically designed for maximum flexibility. Typical Applications Amateur radio (HF, VHF, UHF, SHF) Outdoor antenna systems Repeater and base stations Direct-buried antenna feeder lines Professional radio and data links Technical Specifications – AIRBORNE 10 /.400″ Characteristic impedance: 50 Ω Outer diameter: 10.3 mm (.400″) Center conductor: solid conductor Dielectric: foamed Shielding: ultra-dense copper braid with 192 strands Shielding attenuation: > 105 dB Capacitance: approx. 74 pF/m Velocity factor: approx. 87% Minimum bend radius: approx. 65 mm Weight: approx. 7.1 kg / 100 m Temperature range: −45 °C to +70 °C Outer jacket: PE, UV-resistant, waterproof Attenuation Values (per 100 m cable length) 1.8 MHz: approx. 0.6 dB 14 MHz: approx. 1.3 dB 50 MHz: approx. 2.4 dB 100 MHz: approx. 3.5 dB 144 MHz: approx. 4.2 dB 400 MHz: approx. 7.2 dB 1296 MHz: approx. 13.6 dB 2400 MHz: approx. 19.2 dB 6000 MHz: approx. 32.8 dB 12 GHz: approx. 50.2 dB Maximum Power Rating (CW at 40 °C) 3.5 MHz: approx. 8,471 W 7 MHz: approx. 6,667 W 14 MHz: approx. 5,180 W 28 MHz: approx. 3,731 W 50 MHz: approx. 2,939 W 144 MHz: approx. 1,710 W 400 MHz: approx. 992 W 1000 MHz: approx. 610 W 2400 MHz: approx. 375 W Informationen gemäß Art. 19 GPSRHersteller: Messi&PaoloniHerstellername: Messi & Paoloni SrlHandelsname: Messi & PaoloniAdresse: Via Giovanni Conti 1 - 60131 ANCONA, ItalyE-Mail: web@messi.itWebseite: https://messi.it/Verantwortliche Person:Name: Messi & Paoloni SrlAdresse: Via Giovanni Conti 1 - 60131 ANCONA, ItalyE-Mail: web@messi.itWebseite: https://messi.it/

Ultraflex 10 – High-Performance Coaxial Cable by Messi & Paoloni (Italy) Ultraflex 10 is a high-performance coaxial cable from the renowned Italian manufacturer Messi & Paoloni. It has been specifically developed for demanding amateur radio operators and professional applications up to 12GHz. With outstanding attenuation performance, high flexibility, and maximum shielding of 105 dB, it is the perfect solution for both stationary and mobile RF installations. The inner conductor of Ultraflex 10 consists of flexible copper strands (7 x 1 mm), the outer conductor is made of 100% overlapping copper foil and a copper braid with 144 wires. The copper foil is coated with PE on the inside. The outer jacket is made of elastic, UV-stabilized PVC. Key Features: Very low attenuation – ideal for long cable runsExtremely flexible – perfect for rotator antennas, tight spaces, or mobile setups Excellent shielding – effective protection against RF interference and common-mode currents Connector-friendly – compatible with standard connectors (N, PL, SMA, BNC for 10.3 mm) Made in Italy – top manufacturing quality by Messi & Paoloni Technical Specifications: Impedance: 50 Ohms Outer diameter: 10.3 mm Inner conductor: Pure copper (99.99%), 7 x 1.0 mm strands, Ø 2.9 mm ± 0.15 Dielectric: Gas-injected polyethylene (PE), Ø 7.3 mm Shielding: 1st layer: Copper-PE foil (100% coverage) 2nd layer: Bare copper braid (144 wires, 71% coverage) Total shielding: >105 dB Outer jacket: UV-resistant PVC Minimum bend radius: 40 mm Operating temperature: –40 °C to +70 °C Weight: approx. 13 kg per 100 m Attenuation Values (per 100 m cable length): @ 50 MHz: 2.7 dB @ 100 MHz: 3.9 dB @ 200 MHz: 5.7 dB @ 400 MHz: 8.3 dB @ 800 MHz: 12.1 dB @ 1000 MHz: 13.8 dB @ 2400 MHz: 23.7 dB Maximum Power Handling (CW at 40 °C): 2437 W @ 28 MHz 1049 W @ 144 MHz 587 W @ 430 MHz Typical Applications: Amateur radio (HF, VHF, UHF) Shortwave operation Satellite communication Professional radio systems Measurement and testing equipment SDR transceivers and receivers Why Ultraflex 10? When maximum performance and minimal signal loss are required, the new Ultraflex 10 is the top choice. Its combination of low attenuation, mechanical flexibility, and industrial-grade quality makes it the ideal coaxial cable for amateur radio and even professional communication solutions. You can find the official datasheet here: Datasheet

Messi & Paoloni Ultraflex 10 Low-Loss Coaxial Cable – Assembled The Ultraflex 10 Competition coaxial cable is professionally assembled by us and can be supplied with connector types of your choice. All connectors are expertly installed in-house and subsequently tested. The available cable lengths are based on our many years of experience and the most commonly requested sizes. Of course, we are happy to manufacture custom lengths or alternative connector configurations according to your requirements. Simply get in touch with us—we’ll be glad to advise you. The Innovation of Flexibility in 10 mm Coaxial Cables from Messi & Paoloni The Ultraflex 10 Competition low-loss coaxial cable from Messi & Paoloni is suitable for frequencies of up to 8 GHz. This RF cable is highly flexible and designed for use in HF, VHF, UHF, and even SHF applications. Ultraflex 10 is manufactured with a 7-strand center conductor, which enables an unprecedented level of flexibility for a cable with a 10.3 mm diameter. High Performance for Almost Every RF Application Ultraflex 10 is a coaxial cable suitable for most radio and RF applications. It is extremely flexible, features low attenuation, and offers excellent protection against interference thanks to its double shielding (foil and tight copper braid) with a shielding effectiveness of 105 dB. A carefully manufactured braid produced using 24 carriers surrounds the plastic- and copper-coated aluminum foil. The optical coverage is 71%, ensuring reliable shielding performance. Key Features Very low attenuation – ideal for long cable runs Extremely flexible – perfect for rotor antennas, tight installations, and mobile applications Excellent shielding – reliable protection against RF interference and common-mode currents Connector-friendly – compatible with common connectors (N, PL, SMA, BNC for 10.3 mm cables) Made in Italy – highest manufacturing quality by Messi & Paoloni Compared to RG58U The significant differences compared to RG58U are described in detail in a separate article, including many real-world examples. (Link to article) Ultraflex 10 Competition – Features Very flexible Suitable for rotor operation 7-strand center conductor Modern design suitable for frequencies up to 8 GHz UV-resistant Compatible with many antenna connectors commonly used with RG-213 Technical Specifications Impedance: 50 ohms Outer diameter: 10.3 mm Center conductor: pure copper (99.99%), 7 × 1.0 mm stranded, Ø 2.9 mm ± 0.15 Dielectric: gas-injected foamed polyethylene (PE), Ø 7.3 mm Shielding: 1st layer: copper-PE foil (100% coverage) 2nd layer: bare copper braid (144 strands, 71% coverage) Total shielding effectiveness: >105 dB Outer jacket: UV-resistant PVC Minimum bend radius: 40 mm Operating temperature: −40 °C to +70 °C Weight: approx. 13 kg per 100 m Attenuation Values (per 100 m cable length) @ 50 MHz: 2.7 dB @ 100 MHz: 3.9 dB @ 200 MHz: 5.7 dB @ 400 MHz: 8.3 dB @ 800 MHz: 12.1 dB @ 1000 MHz: 13.8 dB @ 2400 MHz: 23.7 dB Maximum Power Rating (CW at 40 °C) 2437 W @ 28 MHz 1049 W @ 144 MHz 587 W @ 430 MHz Informationen gemäß Art. 19 GPSRHersteller: Messi&PaoloniHerstellername: Messi & Paoloni SrlHandelsname: Messi & PaoloniAdresse: Via Giovanni Conti 1 - 60131 ANCONA, ItalyE-Mail: web@messi.itWebseite: https://messi.it/Verantwortliche Person:Name: Messi & Paoloni SrlAdresse: Via Giovanni Conti 1 - 60131 ANCONA, ItalyE-Mail: web@messi.itWebseite: https://messi.it/

Hyperflex 10The innovation of flexibility in 10 mm coaxial cables from Messi & Paoloni. The HyperFlex 10 Low-Loss coaxial cable from Messi & Paoloni is suitable for the frequency range up to 10 GHz. The HF cable is flexible and suitable for HF, VHF, UHF and even SHF applications. HyperFlex 10 is manufactured with an inner conductor with 19 wires. This inner conductor is the prerequisite for a previously unknown flexibility in 10.3 mm cables. HyperFlex 10 is a coaxial cable for most applications in radio technology: It is very flexible, low-attenuation and, thanks to its double shielding (foil and close-meshed braid), is shielded against interference radiation with 105 dB. A carefully worked braid with the help of 24 coils surrounds the plastic and copper-coated aluminum foil. The optical coverage is 78%. Properties Hyperflex 10 Very flexible Also suitable for rotor operation Inner conductor with 19 wires Thanks to its modern design, it is even suitable for frequencies up to 10 GHz UV-resistant Many RG-213 standard antenna connectors can be used. Technical specifications: Cable structure: Inner conductor pure copper 99.99%, 19 x 0.59 mm, Ø 3.0 mm Dielectric: three-layer physical cell PE, PEG Ø 7.3 mm ± 0.05 Outer conductor 1: copper-coated aluminum foil, plastic coated Outer conductor 2: copper braid, opt. Covering 78% 168 wires Outer skin: PVC, highly flexible, Ø 10.3 mm ± 0.15 mm UV-resistant Weight: 11.1 kg / km Color: Black Mechanical properties Bending radius: 80 mm Laying radius: 40 mm Temperature range: operation-55 ° C - + 85 ° C / installation: -40 ° C - + 60 ° C Weight: 11.1 kg / 100 m Electrical Properties: Resistance DC Outer conductor: 12 Ω / km Inner conductor: 3.6 Ω / km Capacity: 78 pF / m ± 2 Reduction factor: 87% see below Characteristic impedance: 50 Ω ± 3 Peak voltage (spark test): 8 kV class A ++ Shielding level: 100 - 2000 MHz> 105 dB

The RG-213 coaxial cable from Italian manufacturer Siva Cavi is a proven standard cable for amateur radio, broadcasting, and professional RF applications. With its robust construction, excellent electrical performance, and long service life, it is one of the most popular 50 Ohm coaxial cables worldwide. Thanks to its low attenuation and solid shielding, the Siva Cavi RG-213 ensures reliable signal transmission across HF, VHF, and UHF frequencies. The durable black PVC jacket is UV-resistant and weatherproof, making the cable ideal for both indoor and outdoor installations. Despite its strong build, it remains flexible and easy to handle. Technical Specifications (RG-213 Siva Cavi) Type: RG-213/U coaxial cable Impedance: 50 Ohm Outer diameter: approx. 10.3 mm Inner conductor: 7 × 0.75 mm stranded copper, Ø 2.25 mm Dielectric: solid PE (Ø approx. 7.3 mm) Shielding: copper braid, high coverage Outer jacket: PVC, black, UV-resistant Capacitance: approx. 101 pF/m Attenuation (typical): 2.6 dB/100 m @ 30 MHz 4.5 dB/100 m @ 100 MHz 7.8 dB/100 m @ 200 MHz 13.2 dB/100 m @ 400 MHz Minimum bending radius: approx. 50 mm Temperature range: –20 °C to +80 °C Key Benefits High-quality Italian manufacturing (Siva Cavi) Excellent HF characteristics with low attenuation Robust and UV-resistant PVC jacket for outdoor use Reliable shielding for interference-free operation Versatile for amateur radio, measurement, and broadcast applications

Maximale Leistung muss nicht teuer sein: Das neue CONTESTFLEX 10 bietet dir volle Performance zum günstigen Preis – und setzt dabei Maßstäbe in seiner Klasse. Dieses hochwertige 50 Ohm Koaxkabel wurde speziell für anspruchsvolle Funkanwendungen entwickelt. Ob im Shack, beim Fieldday oder im harten Contestbetrieb: Du profitierst von exzellenter Signalqualität, hoher Belastbarkeit und außergewöhnlicher Flexibilität. Mit einem Kabeldurchmesser von 10,3 mm bietet das CONTEST FLEX 10 die perfekte Balance aus robuster Bauweise und einfacher Handhabung. Der mehradrige Innenleiter aus Kupfer sorgt für Flexibilität, während die Kombination aus Folie und dichtem Geflecht eine hervorragende Schirmung garantiert. Das CONTESTFLEX 10 verfügt über einen Innenleiter aus 19 feinen Einzeldrähten. Diese spezielle Konstruktion ermöglicht eine für 10,3 mm Koaxkabel außergewöhnliche, nahezu einzigartige Flexibilität – ideal für alle Anwendungen, bei denen Beweglichkeit und einfache Verlegung entscheidend sind. Gleichzeitig überzeugt das Kabel durch seine geringe Dämpfung und ist damit perfekt für anspruchsvolle Funkanwendungen geeignet. Die Kombination aus Folienabschirmung und dichtem Geflecht sorgt für eine effektive doppelte Schirmung mit über 105 dB. So wird Störstrahlung zuverlässig unterdrückt und eine saubere Signalübertragung sichergestellt. Das Ergebnis: minimale Verluste, maximale Signalstärke und zuverlässiger Betrieb – selbst unter schwierigen Bedingungen. Empfohlen für einen Frequenzbereich von 1 MHz bis 467 MHz Damit ist dieses Kabel die ideale Wahl für nahezu alle Amateurfunkanwendungen von Kurzwelle bis UHF. Technische Highlights Contestflex Volle Performance zum günstigen Preis Frequenzbereich: 1 MHz – 467 MHz Impedanz: 50 Ohm ±3 Schirmdämpfung: >105 dB (100–2000 MHz) Kabeldurchmesser: 10,3 mm Maximale Spitzenleistung: bis 10.000 Watt Sehr flexibel durch mehradrigen Innenleiter Dämpfung (Auszug) 7 MHz: 1,1 dB / 100 m 14 MHz: 1,5 dB / 100 m 144 MHz: 5,4 dB / 100 m 430 MHz: 10,5 dB / 100 m Warum CONTEST FLEX 10? Weil du hier ein Kabel bekommst, das genau das liefert, was im Funkbetrieb zählt: Starke Leistung. Hohe Flexibilität. Saubere Signale. Und das zu einem richtig guten Preis. Typische Einsatzbereiche Amateurfunk (HF, VHF, UHF) Contestbetrieb Portable Einsätze (POTA, SOTA, Fieldday) Antennen-Zuleitungen Leistungsstarke Funkstationen Informationen gemäß Art. 19 GPSRHersteller: Messi&PaoloniHerstellername: Messi & Paoloni SrlHandelsname: Messi & PaoloniAdresse: Via Giovanni Conti 1 - 60131 ANCONA, ItalyE-Mail: web@messi.itWebseite: https://messi.it/Verantwortliche Person:Name: Messi & Paoloni SrlAdresse: Via Giovanni Conti 1 - 60131 ANCONA, ItalyE-Mail: web@messi.itWebseite: https://messi.it/