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Messi & Paoloni EXTRAFLEX BURY 10 /.400"
Premium low-loss 50 ohm coax combining excellent flexibility with a tough waterproof PE jacket for direct burial, outdoor installations, tight bends and rotator-operated antennas.
Choose your cable length and connector combination and let us build the lead for you.
Low loss, waterproof, flexible and designed for permanent outdoor installation.
EXTRAFLEX BURY 10 combines a stranded copper centre conductor and reactive braid with a tear-resistant polyethylene jacket and protective petrol-jelly layer.
Messi & Paoloni EXTRAFLEX BURY 10 /.400" is a high-performance 10.3mm coaxial cable designed for installations where you need both excellent flexibility and genuine outdoor durability.
M&P specifically positions EXTRAFLEX BURY 10 as a cable capable of handling outdoor use, direct burial, tight bends and rotator-operated antennas within the same design.
Its low-loss RF construction uses a stranded copper centre conductor, physically foamed dielectric, full copper foil screen and dense reactive braid, while the outside of the cable is protected by a UV-resistant polyethylene jacket and a petrol-jelly layer designed to help prevent oxidation and improve water resistance.
Tough UV-resistant polyethylene jacket is designed for permanent underground and exposed outdoor installations.
Petrol-jelly protection around the screening helps prevent oxidation and contributes to the cable's waterproof construction.
Stranded copper centre conductor and reactive braid allow tight routing and use with rotator-operated antennas.
Triple-layer physically foamed polyethylene dielectric provides excellent low-loss RF performance.
Built for Jobs Ordinary Flexible Coax Cannot Do
Standard flexible PVC-jacket coax is excellent inside the shack, up a mast or around a rotator, but it is not normally intended to be buried directly in the ground.
EXTRAFLEX BURY 10 is different. Its tear-resistant polyethylene outer jacket is specifically designed for outdoor and underground use, while the cable still retains the flexibility needed for tighter bends and moving antenna systems.
M&P describes it as delivering its best performance and attenuation for a 10mm stranded-core coaxial cable.
Premium Low-Loss Performance
At 20°C, attenuation is specified at only 1.4dB per 100m at 14MHz, 2.6dB at 50MHz, 4.6dB at 144MHz, 8.5dB at 430MHz and 15.3dB at 1296MHz.
This makes EXTRAFLEX BURY 10 particularly suitable for long permanent feed lines and VHF/UHF installations where losses in conventional coax can become a significant part of the overall system performance.
A Major Step Up from RG213 and RG-8X
Despite being approximately the same overall diameter as RG213/U, EXTRAFLEX BURY 10 provides substantially lower attenuation. The advantage over RG-8X is even greater.
Comparison figures use published Belden RG213 and RG-8X Type data. Performance varies between cable manufacturers and individual constructions.
Petrol-Jelly Protected and Waterproof
M&P adds a protective petrol-jelly layer within EXTRAFLEX BURY 10 to help reduce oxidation and protect the cable from moisture ingress.
Combined with the UV-resistant polyethylene outer jacket, this gives the cable the durability needed for permanent outdoor runs and direct burial.
EXTRAFLEX BURY 10 is particularly useful when a feed line has to leave the shack, cross a garden or property underground and then continue up towards the antenna without changing to a different type of coax.
Flexible Enough for Rotator Antennas
The technical specification gives a 7 x 1.0mm stranded copper centre conductor with an overall diameter of approximately 2.9mm.
Combined with M&P's reactive braid, this provides much greater flexibility than would normally be expected from a rugged direct-burial cable.
Minimum bend radius is specified at 80mm for repeated bending up to 15 bends and just 40mm for a single bend or choke.
Dense 192-Wire Reactive Braid
The first screen is a 100% copper foil with an applied polyethylene layer designed to help prevent cracking during short-radius bends.
Over this is an 85% coverage reactive braid made from 192 copper-clad aluminium wires.
M&P manufactures the braid using a 24-spool process rather than a conventional 16-spool machine. The additional crossover points allow the braid to react to bending and twisting in a spring-like manner while maintaining excellent screening.
Greater Than 105dB Screening
Screening efficiency is specified at greater than 105dB between 100MHz and 2000MHz.
This high level of shielding helps reduce unwanted RF ingress and radiation from the feed line, particularly useful in stations with multiple radios, amplifiers, antennas or nearby sources of interference.
High-Power Capability
M&P's 40°C power-handling data gives approximately 3013W at 14MHz, 1656W at 50MHz, 956W at 144MHz and 543W at 430MHz.
M&P specifies a maximum peak-power rating of 10kW. Actual power handling varies with operating frequency and cable temperature.
Where EXTRAFLEX BURY 10 Works Best
Designed for permanent underground coax runs between the shack and antenna system.
Unusually flexible for a burial-grade cable, making it suitable for rotator loops and moving antenna systems.
Low attenuation and weather-resistant construction suit long permanent feeds exposed to the elements.
Low loss becomes particularly valuable as operating frequency and cable length increase.
Strong power handling makes it suitable for demanding HF and VHF transmit installations.
A substantial performance upgrade while remaining within the familiar 10.3mm cable size.
M&P Cable Length Guidance
M&P provides the following transmitting guidance for EXTRAFLEX BURY 10. These figures indicate cable lengths at which M&P rates performance as Excellent or Good and are not absolute operating limits.
Cable Construction
- 7 x 1.0mm stranded copper centre conductor
- 2.9mm overall centre conductor diameter
- Triple-layer high-pressure physically foamed polyethylene dielectric
- 100% copper foil first screen with applied PE layer
- 85% coverage reactive braid
- 192 copper-clad aluminium braid wires manufactured using 24 spools
- Petrol-jelly protection against moisture and oxidation
- UV-resistant polyethylene outer jacket
- Suitable for direct burial and outdoor use
- 10.3mm overall diameter
- 87% velocity factor
- Screening efficiency greater than 105dB from 100 to 2000MHz
- Maximum peak power 10,000W
EXTRAFLEX BURY 10 /.400" Technical Specifications
General
Construction
Minimum Bend Radius
80mm for up to 15 bends
40mm
Structural Return Loss
Attenuation at 20°C
Power Handling at 40°C
M&P labels its detailed power/temperature data for this cable as continuous carrier at 50% duty cycle. Observe the manufacturer's full power and temperature guidance when designing high-power systems.
Shipping:
We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.
Returns:
If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]