Product Categories
1. Rigid Coaxial Line Sections
COM-TECH rigid lines are the industry standard for transporting high RF power with minimal loss. Available in standard EIA sizes, they feature high-conductivity outer conductors and silver-plated inner conductors.
- Standard Lengths: Available in standard 20ft (approx. 6m) sections or custom cut lengths.
- Inner Supports: Low-loss PTFE insulators ensure concentricity and stable impedance.
2. Elbows & Bends
Navigating the physical layout of a transmitter room requires precision bends. COM-TECH elbows maintain 50-ohm impedance through the turn, preventing signal reflections.
- 90° Elbows: Available in mitered or swept designs depending on frequency/power needs.
- 45° Bends: For complex routing paths.
- Swivel Flanges: Many elbows feature swivel flanges to simplify alignment during installation.
3. Adapters & Transitions
Interfacing between different equipment often requires transitioning between connector sizes or types. COM-TECH offers a massive library of precision adapters.
- Inter-Series Adapters: Connect a 7/16 DIN cable to a 1-5/8" rigid line, or N-Type to 7/8".
- Reducers: Smoothly transition from larger diameter lines (e.g., 3-1/8") to smaller inputs (e.g., 1-5/8") without impedance bumps.
4. Hardware & Accessories
The details matter. We supply the essential hardware to complete the installation:
- O-Rings & Hardware Kits: Essential for weatherproofing outdoor connections.
- Gas Barriers: To seal pressurized nitrogen sections.
- Bellows: To absorb thermal expansion and contraction in long runs.
Technical Specifications
| Feature | Specification |
|---|---|
| Standard Sizes (EIA) | 7/8", 1-5/8", 3-1/8", 4-1/2", 6-1/8" |
| Impedance | 50 Ohm ± 0.5% |
| Frequency Range | DC to GHz ranges (Size dependent) |
| Materials | Aluminum Alloy (Alodine treated), Silver-Plated Copper Inner |
| Insulators | Low-loss PTFE (Teflon) |
| VSWR | Typically < 1.02:1 per component |
Why Source "Plumbing" from MDL?
Buying rigid line components isn't just about the metal; it's about the logistics. Rigid line is difficult to ship and easy to damage.
- Logistics Experts: MDL handles the complex importation and freight of long rigid line crates to your site in Canada.
- System Design: We can review your room layout and recommend the exact bill of materials (BOM) for elbows and cuts.
- Quick Adapters: We often stock the critical "emergency" adapters (e.g., 1-5/8" to N-Female) needed for testing.
Build a leak-proof RF path.
Contact MDL Communications for a quote on your rigid line Bill of Materials.

