Belden MRG1781 Series, 100 m, RG178 Coaxial Coaxial Cable 50 Ω, Black, Unterminated

RS Stock No.:: 521-7944
Brand:: Belden

Belden MRG1781 Series, 100 m, RG178 Coaxial Coaxial Cable 50 Ω, Black, Unterminated

Subtotal (1 reel of 100 metres)*

£202.94

(exc. VAT)

£243.53

(inc. VAT)

FREE delivery for orders over £60.00

In Stock

8 unit(s) ready to ship
Plus 3 unit(s) ready to ship from another location
Plus 24 unit(s) shipping from 06 August 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Reel(s)	Per Reel	Per Metre*
1 +	£202.94	£2.029

*price indicative

RS Stock No.:: 521-7944
Brand:: Belden

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Belden
	Product Type	Coaxial Cable
	Terminated/Unterminated	Unterminated
	Coaxial Type	RG178
	American Wire Gauge	30AWG
	Voltage	1kV dc
	Outside Diameter	1.8mm
	Characteristic Impedance	50Ω
	Attenuation	19 dB
	Conductor Type	Stranded
	Minimum Operating Temperature	-25°C
	Maximum Operating Temperature	70°C
	Cable Length	100m
	Standards/Approvals	Euroclass Eca
	Jacket Colour	Black
	Fire Behaviour	IEC 60332-1-2 (Low Smoke Zero Halogen)
	Number of Strands	7
	Jacket Material	Polyethylene
	Series	MRG1781
	Conductor Material	Silver Plated Copper Clad Steel
	Size of Strands	0.1mm
	Core Strands	7 x 0.1mm

	Select all
	Brand Belden
	Product Type Coaxial Cable
	Terminated/Unterminated Unterminated
	Coaxial Type RG178
	American Wire Gauge 30AWG
	Voltage 1kV dc
	Outside Diameter 1.8mm
	Characteristic Impedance 50Ω
	Attenuation 19 dB
	Conductor Type Stranded
	Minimum Operating Temperature -25°C
	Maximum Operating Temperature 70°C
	Cable Length 100m
	Standards/Approvals Euroclass Eca
	Jacket Colour Black
	Fire Behaviour IEC 60332-1-2 (Low Smoke Zero Halogen)
	Number of Strands 7
	Jacket Material Polyethylene
	Series MRG1781
	Conductor Material Silver Plated Copper Clad Steel
	Size of Strands 0.1mm
	Core Strands 7 x 0.1mm

COO (Country of Origin):: NL

Belden MRG1781 Series Coaxial Cable, 100m Length, 50 Ω Characteristic Impedance - MRG1781.00100

This coaxial cable is a specialised RG178 type designed for effective performance in various indoor applications. With a length of 100m and an outer diameter of 1.8mm, this cable features a black PVC sheath that ensures durability and operational efficiency. It is an unterminated cable, utilising a stranded silver-plated copper-clad steel conductor to deliver optimal signal transmission.

Features & Benefits

• Utilises a 50 Ω characteristic impedance for stable performance

• Low attenuation of 19 dB/100m at 10 MHz facilitates high-quality signal transfer

• Enhanced conductor design using silver-plated copper for improved conductivity

• PVC outer jacket offers protection and longevity in various environments

• Suitable for operating temperatures between -25 °C and +70 °C

• Euroclass Eca certification confirms compliance with safety standards

Applications

• Ideal for coaxial communication systems

• Used for RF where low signal loss is vital

• Perfect for high-performance telecommunications installations

• Employed in automation systems requiring reliable signal integrity

• Suitable for installation in controlled indoor environments

What type of insulation material is used in the cable?

The cable features polyethylene (PE) insulation, ensuring effective dielectric properties for improved signal quality.

How does the cable perform in high-frequency settings?

At high frequencies like 200 MHz, the cable demonstrates a typical insertion loss of 63 dB/100m, maintaining signal integrity for critical applications.

What is the rated voltage for this coaxial cable?

The cable is rated for a voltage of 1000V DC and 600V RMS, making it suitable for various electrical systems in commercial and industrial settings.

What is the significance of the cable's Euroclass Eca certification?

The Euroclass Eca certification indicates compliance with European fire safety standards, ensuring the cable is suitable for installation in public and commercial spaces.

How does the temperature range affect the cable's performance?

With an operating temperature range from -25 °C to +70 °C, the cable remains functional and reliable in diverse environmental conditions, ensuring consistent performance.