MPN

Belden MRG1781 Series, 100m, RG178 Coaxial, Unterminated50 Ω

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

Belden MRG1781 Series, 100m, RG178 Coaxial, Unterminated50 Ω

Subtotal (1 reel of 100 metres)*

£190.82

(exc. VAT)

£228.98

(inc. VAT)

FREE delivery for orders over £50.00

In Stock

8 unit(s) ready to ship
Plus 4 unit(s) ready to ship from another location
Plus 999,999,991 unit(s) shipping from 10 November 2025

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

Reel(s)	Per Reel	Per Metre*
1 +	£190.82	£1.908

*price indicative

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

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Belden
	Terminated/Unterminated	Unterminated
	Coaxial Type	RG178
	Outer Diameter	1.8mm
	CPR Certification	Eca
	Characteristic Impedance	50 Ω
	Attenuation	19 dB/100m @10 MHz
	Length	100m
	Sheath Colour	Black
	Conductor Strand Type	Stranded
	Voltage Rating	1 kV dc
	Sheath Material	Polyvinyl Chloride PVC
	Maximum Operating Temperature	+70°C
	Series	MRG1781
	Operating Temperature Range	-25 → +70 °C
	Minimum Operating Temperature	-25°C
	Velocity ratio	66%
	Insulation Material	PE
	Capacitance	100pF/m
	Shielding	Tinned Copper Braid
	Standards Met	Euroclass Eca
	Core Strands	7/0.1
	Size of Strands	0.1 mm
	Conductor Material	Silver Plated Copper Clad Steel
	Number of Strands	7

	Select all
	Brand Belden
	Terminated/Unterminated Unterminated
	Coaxial Type RG178
	Outer Diameter 1.8mm
	CPR Certification Eca
	Characteristic Impedance 50 Ω
	Attenuation 19 dB/100m @10 MHz
	Length 100m
	Sheath Colour Black
	Conductor Strand Type Stranded
	Voltage Rating 1 kV dc
	Sheath Material Polyvinyl Chloride PVC
	Maximum Operating Temperature +70°C
	Series MRG1781
	Operating Temperature Range -25 → +70 °C
	Minimum Operating Temperature -25°C
	Velocity ratio 66%
	Insulation Material PE
	Capacitance 100pF/m
	Shielding Tinned Copper Braid
	Standards Met Euroclass Eca
	Core Strands 7/0.1
	Size of Strands 0.1 mm
	Conductor Material Silver Plated Copper Clad Steel
	Number of Strands 7

RG178

A RG 179 coaxial cable for transmission purposes.

Features and Benefits
· Meets the requirements of MIL-C-17-9
· PE Dialectric
· PVC sheath to European Standard HD 624

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.