MT-174LL-32: Coaxial Cable, 10-32 (Microdot compatible) to TNC, RG174 low loss, 32 foot, 50 ohm

Coaxial Cable, 10-32 (Microdot compatible) to TNC, RG174 low loss, 32 foot, 50 ohm [MT-174LL-32] Other lengths for this cable Other connector and cable combinations		$124.94 Available for order

Coaxial Cable, 10-32 (Microdot compatible) to TNC, RG174 low loss, 32 foot, 50 ohm

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MT-174LL-32 is a RG174 low loss 32 foot 50 ohm (9.76 meter) coax cable assembly with a 10-32 (Microdot compatible) connector on one end and a TNC connector on the other end.

About M-Series Connectors

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There are multiple sizes of connectors which practitioners tend to call "Microdot". The most common size uses 10-32 threads, but there are also 5-44 and 1/4-32 variants, as shown in this image.

This style of connector was pioneered by Malco in the late 1950's and early 1960's. Malco was later bought by Microdot, which was later bought by Tyco. Because of this history, users in the industries that use this connector style still call this a "Microdot connector", or even "Malco Connector", even though there are now multiple manufacturers making compatible connectors. "Microdot" is a trademark of Tyco.

The connectors we provide are compatibles made by various manufacturers. They are often improved designs, mechanically more durable than the original Malco connector.

10-32 (M) Connector Details

These connectors have threads that are the same as those on a 10-32 (UNF) machine screw. They are commonly used in non-destructive testing (NDT) and aerospace, on transducers, accelerometers, strain gauges, and force and acoustic sensors, among other applications.
These connectors are often confused with 1/4-32 connectors; they look similar, varying only slightly in size. If in doubt, check your mating connector using a thread gauge or caliper: 1/4-32 threads have a minor diameter of approximately 5.4 mm, while 10-32 threads have a minor diameter of about 3.9 mm. See a thread chart for more details.

About 50 ohm cable assemblies

This cable assembly has a characteristic impedance of 50 ohms. 50 ohm coax cable, connectors, and adapters are commonly used in GPS and wifi (802.11 wireless LAN) antennas, ham transceivers, and other radio frequency (RF) analog and digital signaling, microwave, radar, hi-fidelity professional audio, non-destructive testing (NDT), oil and petroleum production, ultrasonic transducers, accelerometers, strain gauges, and some professional video applications.

About Low Loss Cable

This is Belden's 7805 "low loss" cable. It's similar to RG174, but with a solid copper core and a layer of foil added under the braid. This combination causes less attenuation, providing roughly 50% more signal as measured in decibels. 7805 also works better at higher frequencies, and is rated up to 6 GHz. The foil layer also provides for better EMF shielding versus braid alone.

Belden 7805 data sheet.
Belden 8216 data sheet (an example RG174/U, for comparison)

We see this cable used in fixed-place permanent installations such as wifi and GPS antenna extensions, other RF applications, low-voltage signal sources including radiation detectors and strain gauges, high-frequency or fast-rise transient signals, and other low-vibration applications in aerospace, nuclear physics, petroleum refining and chemical processing.

This cable is not recommended for use in applications where it will undergo repeated cycles of flexing or vibration -- the solid core will eventually break under those conditions. You may instead want one of these stranded-core RG174 variants:

RG174 standard has a stranded core and PVC jacket.
RG174 TPR has a stranded core and TPR jacket. The TPR jacket provides for more flexibility, most useful in bench and handheld applications.
RG174 low noise has a stranded core, PVC jacket, and a carbon layer under the braid. The carbon layer reduces flexing-induced static and provides some additional shielding. It's best at lower frequencies -- see the notes on that page.

RG174 low loss Specifications

The following are nominal values; if you have exact requirements that need to be met for a given application, please contact us.

Impedance 50 ohms

Capacitance 102.3 pF/meter (31.2 pF/foot)

Minimum Operating Temperature -40 C (-40.0 F)

Maximum Operating Temperature 80 C (176.0 F)

Jacket Diameter 2.8 mm

Jacket Material PVC

Velocity Ratio 66%

Core solid

Related Belden 7805

We hi-pot test our cable assemblies for high-voltage breakdown between core and braid. See About Hi-Pot Testing for why this might matter to you, particularly for physics or NDT applications. Caution: We make no claims as to the safety of this product for high-voltage use. These voltages can kill. Do not handle or approach any cable or conductor carrying high voltage; this includes insulated cables, nearby metal parts, water, and other conductive materials. Engineering and design for safety in your application are your responsibility.

Customization and Ordering

We make our own cable assemblies. If you need a connector type that you don't see here, or if you have custom requirements, feel free to contact us.
RoHS compliance available upon request.
low noise RG174 cable available -- see Cables/RG174 low noise.
If you need a quantity discount quote, please contact us. We're always happy to work with distributors.

All prices are subject to change without notice.

Actual product color, plating, and other details may differ from photo images depending on upstream component availability.

All trademarks and registered trademarks are the property of their respective owners. LEMO is a registered trademark of LEMO USA. Microdot is a trademark of Tyco Electronics.

This product was added to our catalog on Saturday 18 July, 2015.