Yearly Archives: 2017


Reduce Reuse Recycle

@YellowsBestLtd helps Customers with their operational needs, and one aspect is to #Reduce the demand for avoidable whole-scale replacements through a combination of supply for #Reuse of refurbished spares and repair of system elements. When removal and disposal of no-longer serviceable infrastructure parts is necessary, we can also assist with the resale and #Recycle for ‘value recovery’ of valuable materials.

Most customers have implemented their private network infrastructure systems over a number of years, and for many their operational requirements have not changed. Consequently, it makes more sense both financially and environmentally to maintain these systems rather than embark on complete change-outs. We can assist by supplying critical and hard-to-find spare parts and hardware repair services, even when the systems have been declared ‘obsolete’ (i.e. no longer in production) by the O.E.M.

Eventually there does come a time when it proves necessary to remove and replace network infrastructure. Rather that simply discarding the old system elements, we can provide ‘value recovery’ to the Customer by means of resale of working parts and recycling of components, extracting useful materials. This often proves financially beneficial, generating a source of funds which helps to pay for the replacement systems, as well as providing an ethical means of disposing of unwanted parts with the least environmental impact.

Please get in touch should you wish to discuss your operational requirements and see how @YellowsBestLtd can be of assistance.


Recommended reading on the wider aspects of ‘The Future of Waste’ can be found in:

@TheIET @EandTmagazine Volume-12_Issue-11


IET Achievement Awards 2017

Delighted to have attended @TheIET @IETawards #IETAchieve ceremony on Wednesday 15th Novemeber 2017. Well organised with a good turnout at the impressive @theBreweryVenue, it was a chance to network with a very diverse, international mix of engineering professionals, academics, students, armed forces representatives and volunteers.

This year’s event was hosted by the very capable @AngelaLamont (best known for the #BBC1 It’ll Never Work? programme) who ensured the smooth running of the event whilst always keeping the tone enjoyable and interesting.

Naturally there were many awards. Key highlights included the Faraday Medal presented to Dr Bjarne Stroustrup for his revolutionary and now far-reaching work on the creation of the C++ programming language, and an Honorary Fellowship awarded to @iamwill‏ for his contribution to the engineering profession – helping to raise the industry profile even further!

The ceremony was interspersed with impressive and thought-provoking presentations by the Present Around The world (#PATW) global finalists, the audience being able to vote on presentation skills and technical content of the speakers, and so special mention goes to Shubham Saraff of the South Asia Region who emerged the winner with his presentation on “Neurons that Shaped Us”.

Next years’ @IETawards Ceremony, celebrating and networking as the winners of the #IETAchieve prestigious Achievements Awards and Scholarships are announced, will be held on 14th November 2018 in London.

Keen to hear more from others who attended this year’s event, or anyone interested in attending next year, feel free to get in touch!

Read more at the IET Website



Trade Shows and Industry Events

Although often busy with immediate actions and therefore time can become short, throughout the year it’s good to make the effort to attend a number of the multitude of trade shows and industry events held throughout the year. They can be helpful for finding out about industry developments and trends, products and services and generally networking with Customers and Suppliers.

There follows a non-exhaustive list of a few held recently in the U.K. Where possible, dates for next year’s events are included which should help with next year’s diary planning. If you’re going we could meet up, and if you’re exhibiting then do advise so your stand can be visited! Always keen to find opportunities and occasions to discuss how services and solutions can be best aligned for mutual success.


@CloudExpoEurope – March 2017 at ExCel, London.

The cloud event for business. Includes #CloudSecurityExpo, #BigDataWorld, #SmartIOTLondon, #DataCentreWorld.

Next scheduled for 21st & 22nd March, 2018, ExCel, London.


@Railtex – May 2017 at the NEC, Birmingham.

The UK’s International Rail Industry Exhibition. Specialising in the latest equipment, systems & services.

It’s sister event @Infrarail will be held 1st-3rd May 2018 at ExCel, London.


@TechXLR8 – June 2017 at ExCel, London.

#TechXLR8 is a festival of technology, connecting industries and enabling new thinking. Part of London Tech Week #LTW 2017.

Next scheduled for 12th-14th June 2018 at ExCel, London.


@IPEXPO Europe – October 2017 at ExCel, London.

Europe’s number one enterprise event. Includes #CloudEurope, #CyberSecurityEurope, Networks & Infrastructure Europe, AI Analytics & IOT Europe, #DevopsEurope, Open Source Europe.

Next scheduled for 3rd-4th October 2018 at ExCel, London.

Also IP Expo Manchester is on 25th-25th April 2018 at Manchester Central.


@EngDesignShow – October 2017, Coventry.

The #EngineeringDesignShow is the UK’s must-attend event for engineering, and also includes #ElectronicsDesignShow and #EmbeddedDesignShow.

Next scheduled for 17th-18th October 2018 at Ricoh Arena, Coventry


@IETAwards Ceremony, London.

Celebrating and networking as the winners of the #IETAchieve prestigious Achievements Awards and Scholarships are announced.

Held on 15th November 2017, at The Brewery, London – Read the review!

Next years’ @IETawards Ceremony will be held on 14th November 2018 in London.


Please contact us to let us know your plans for the coming year ahead, and perhaps we’ll meet up!

Repair Services

Although many industrial infrastructure solutions tend to be very reliable and long-lasting, from time-to-time system components can become non-operational, and when these cases arise, businesses benefit from professional repair services.

Equipment requiring repair services falls into two categories:

  • Recently deployed systems, which are still in production by the Original Equipment Manufacturer (OEM).
  • ‘Legacy’ systems, where the production has ceased; in some cases even the original vendor is no longer in business.

For the first category, certainly where there is a residual warranty provision, it may be best to return the failed item to the OEM for repair or replacement. However, businesses may still benefit from an alternative or supplementary service provision, particularly when the vendor’s production facilities are located overseas, and repair and return times are long (typically in excess of 30 days).

Regarding the second category, fortunately there are a range of options that YellowsBest, together with its network of independent service providers, can assist businesses with their ongoing support needs, to maintain the operational nature of their systems and thereby maximise their investment in deployed infrastructure.

YellowsBest assists customers with a wide variety of infrastructure elements, including telecommunications cards, CCTV cameras, matrix displays, etc. There are a number of ways YellowsBest can provide repair services:

  • Component-Level Repairs
  • Swap Repairs (Entire Module substitution with Spares)
  • Functional Replacements (Complete system substitution with compatible alternatives)

There follows brief descriptions of these repair services that we have been providing to our customers. We would be very pleased to hear from you should you wish to discuss your requirements; please contact us to see if we can be of assistance.


Component-Level Repairs

From time-to-time, hardware elements within infrastructure systems fail, and repair services are required. The diversity of modern networks and technologies in use by businesses means that there are a wide range of parts procured over a considerable period of time, from a multitude of vendors and international manufacturers from across the globe. This means that there is a spectrum of the relatively new to aging items, some parts being still under warranty to elements from OEMs that no longer exist.

YellowsBest is able to provide a comprehensive repairs management service, assisting business by acting as a single returns facility for both new and old equipment items. Typically, newer parts in or out of warranty will be sent to the OEM for repair or substitution. Older items, especially in the case where the OEM is no longer exists, will be repaired using our network of independent service providers, all to a standard equivalent to the original working condition and warranted operation.


Swap Repairs

Sometimes the repair of equipment elements is not possible, such as when the item is physically damaged or Beyond Economic Repair (BER). Or it can be the case that the repair times are long, and in order to safeguard continuous operations of systems, additional parts can be used for substitution when failures occur.

YellowsBest can source the required equipment spare parts, though its partnership with key vendors of the latest products as well as suppliers of legacy systems components. In many cases these parts can be newly manufactured to order and delivered within specified lead-times, or quickly despatched from either unused surplus stocks or ‘2nd user’ items, particularly in the case when systems are deemed obsolete and are no longer produced by the OEM.

With such a ‘swap service’ in place, the operational status of the deployed equipment can be restored without delay. YellowsBest can then, in many cases, obtain a component-level repair for the substituted item, and thereby return the original unit to ‘stock’, ready to provide the next swap repair.


Functional Replacements

When systems have reached the end of their useful working life, repairs are challenging and spares are unattainable, companies may need to completely change out or upgrade their infrastructure equipment.

YellowsBest can assist businesses by seeking alternative product solutions, in the form of either complete replacement systems, or re-manufactured elements to provide the most efficient substitution of equivalent required functionality. Particularly in the case where operational requirements have not changed, it may prove commercially beneficial to replace like-for-like products. In many cases, the substitution of functionally equivalent newer elements may pay for themselves over time through efficiency savings due to lower power consumption, etc.

Bosch MIC Series Camera

Professional CCTV Cameras

In response to a strong demand for a diverse range of Professional CCTV cameras, we are providing both new and refurbished ‘legacy’ models from a number of manufacturers, to suit our clients’ exact requirements.

Industrial and professional use dictates key features such as a robust weather-proof housing, excellent optical quality, Pan Tilt & Zoom (PTZ) with high magnification, plus options including wiper (for clearing the lens), heater (for extended operating temperature range) and privacy masking. To support existing deployed networks, matching the communication protocol is critical, as well as the appropriate video standard (e.g. PAL).

There follows descriptions of some of the cameras YellowsBest has recently sourced and supplied to our customers, however, we are always keen to receive further enquiries and seek to provide alternatives as necessary; please contact us to discuss your requirements.


Bosch MIC series PTZ cameras

The MIC Series are best-fit cameras for high quality surveillance security applications, installed into the harshest of environments, thanks to its IP68 rating. This tough and vandal-resistant casing provides protection from the elements and physical attack. An integrated, long life silicone wiper, and a reversible rain shield ensure high quality images regardless of the installed environment.

The brushless-motor technology offers ultra-reliable operation with full 360º continuous rotation pan and 186º tilt control for exceptional viewing capability. Small increment pan speeds from just 0.2º per second to 120º per second gives the user precise control. This speed control is especially important when used with video analytic systems, particularly for tracking subjects when fully zoomed in. The MIC Series cameras are simple to integrate and use within systems that already use Bosch AutoDome cameras.

Typical of the range of products meeting professional needs, Bosch cameras have been available for a considerable time, and whilst continuing to fulfil the same basic requirements, have undergone a number of changes over the years in the portfolio which are important to understand. In particular, Bosch previously acquired the range of cameras from ‘Forward Vision’, and consequently it is critical when sourcing additional units to match the communication protocol in use i.e. FV, Pelco or Bosch. The main models (ranging from previously produced and currently available) include:

  • MIC-300 Series
  • MIC-400 Series
  • MIC-500 Series
  • MIC-550 Series
  • MIC-612 Series
  • MIC-7000 Series
  • MIC-9000i Series

There are also two product families, the ‘Classic’ standard camera and the more advanced ‘Professional’ series.

Therefore it is worth analysing the structure of the full model number in detail to ensure all requirements are met:



MIC – Metal (IP68 weather proof housing)

500 – Camera series (e.g. 300, 400, 440, 500, 550)

AL – Case Style (AL = Aluminium, STS = Stainless Steel, IR = Infrared LEDs included)

B – Colour (i.e. Black, Grey, White)

U – Configuration (C = Cantered, U= Upright)

R – Protocol (W = Forward Vision, P = Bosch, D = Pelco P/D, R = multi-protocol (S/W selectable))

1 – Wiper (1 = Wiper fitted, 2 = No Wiper)

4 – Heater (3 = Heater fitted, 4 = No Heater)

6 – Privacy masking (5 = Privacy fitted, 6 = No Privacy)

18 – Optical Zoom (18x, 28x, 36x etc)

P – Video standard (i.e. PAL, NTSC)

Not all options were available for all camera types, and the above model numbering applies to the ‘Classic’ series products. For the ‘Professional’ series, the ‘UR136’ part of the above number is omitted, since these models are by default Upright, multi-protocol units with the Wiper, Heater & Privacy functions included. Hence the part number is shorter, e.g. MIC-500-AL-B-18-P.


360 Vision Technology ‘Predator’ cameras

Since its inception in 2002, 360 Vision Technology has developed an extensive range of analogue, high definition IP, white light, infrared, cooled and uncooled thermal, polished stainless steel and radar controlled CCTV surveillance cameras to suit a broad range of general and harsh environment applications across many market sectors.

The Predator is a high performance, fully featured range of ruggedised PTZ Cameras designed and manufactured in the UK. The Predator range comes with multiple protocols as standard allowing quick and simple integration with many leading DVR’s, matrices and IP VMS systems. The Predator range covers all applications with a comprehensive range of models including analogue, HD, Thermal, Radar, and Stainless Steel versions. Predator cameras can be supplied in any colour, in any quantity.

Key features:

  • NEW Sony Starvis Modules – Ultra low light performance
  • ONVIF 2.4 Profile S Fully Compliant
  • Full Web Server Set Up
  • 1080p Full HD 2MP
  • 30x and 20x Optical Zoom options
  • Ultra Low Light options (0.1Lux colour)
  • ANPR compatible
  • Privacy zones as standard
  • High Light Suppression to eliminate glare from vehicle headlights and other bright objects
  • High quality accurate motors
  • Colour / mono, Analogue and IP camera options
  • Triple Slip Ring technology for preset accuracy and smooth movement
  • Rain Guard around the optical glass to reduce water on the screen
  • IR option for 400m illumination
  • Dual IR & White Light LED Option for 250m (IR) 250m (White Light)
  • Wiper option with programmable wipe settings
  • Washer option
  • Inverted or upright mount
  • Easy & quick setup software
  • UK supported and supplied
  • Colour at Night™ Technology for true colour at night
  • Unique alarm activated White Light illumination for enhanced CCTV Surveillance
  • Any colour Paint & Finish options
  • Marine Paint Preparation with 10 Year Paint Guarantee



Ganz ZC-YX/NX270 Series – 700 TVL Digital Day/Night  cameras

These high performance camera features Ganz GX5 technology, combining 700TVL, WDR (wide dynamic range), intelligent image enhancement and advanced OSD controls. These highly sensitive cameras are designed to deliver an unprecedented level of resolution, sensitivity and control for optimal video surveillance in all conditions.

Key features:

  • 700 TVL Super High Resolution
  • Extremely High Sensitivity Day/Night mode 0.07 lux (colour), 0.007 lux (B/W)
  • Super Low Light Performance 0.00015 lux (Sens up, 512x mode)
  • Automatically switches between 4 pre-programmed profiles for best image results
  • Smart Day/Night mode synchronizes with IR LED
  • 2D/3D Digital Noise Reduction
  • Test Pattern Output with colour bar
  • 12VDC or 24VAC Operation, Auto-Sensing
  • UL Listed
  • A time saving Pro-Pak kit is available for outdoor installations, including camera and a selection of Day/Night compatible varifocal lenses pre-installed in a rugged outdoor housing
  • True WDR, Digital Day/Night and True WDR, True Day/Night models also available.

Consultancy Services

A flexible approach to Consultancy provision

It has been a pleasure providing consultancy services to a client who was looking to develop their product sales business. YellowsBest’s approach is to tailor what we provide to meet the Customer’s exact needs. Several stages of activities were therefore established, reviewed and amended before these ‘workpackages’ were acted upon.

Strategy Workshop to identify the requirements

To thoroughly establish and document the ‘needs’,  a relatively informal but comprehensive ‘workshop’ was held.

This produced the ‘framework’ for the consultancy provision and provided an invaluable tool for measurement of progress toward the goals which were documented as part of this process.

Undertaking key tasks to assist Strategy implementation

A number of tasks were undertaken on behalf of our client in order to assist with the putting into action of the documented strategic aims.

Naturally, the implementation and development of a sales Strategy is a long-term undertaking, and YellowsBest is able to provide ongoing support to its clients with the assistance they need, as and when required, in order to ensure long-term success.

Summary of assistance YellowsBest can provide

YellowsBest is able to assist companies by providing consultation advice for a wide range of initiatives, such as:

  • Creation of Business Plans for identifying markets, customers and strategic propositions
  • Sales Strategy formulation for the generation of prospects and reaching customers via direct and channel approach
  • Assistance with key sales and business development tasks, including customer enquiries and presentations, liaison with vendors, attendance at industry events and content creation for websites and marketing initiatives
  • Performance Measurement analysis to understand success ratios and identify corrective actions to improve utilisation of resources and optimise business efficiency

YellowsBest is able to provide its consultancy services on an ad-hoc day-rate basis, or as a more structured project-delivery, over a number weeks or months as appropriate.

YellowsBest can also provide a range of other related Management Services, including Account Management, Bid Management, Business Development, Channel / Vendor Management, Commercial / Contract Negotiations, Sales and Marketing, Solutions Engineering and Training.


Nokia ‘Dynanet’ – Still Operating, Still in Demand!

Nokia ‘Dynanet’ PDH Telecommunications Product Portfolio

Still Operating, and Still in Demand!

We’re pleased to have recently helped Customers locate additional spares of this incredibly reliable and therefore popular telecommunications infrastructure equipment.

The range was originally produced by Nokia, and has been extensively deployed and in operational service around the world for over 20 years. It has formed the backbone of PDH and Access networks for many Customers across the Telecom Operator, Utilities and Transportation market sectors.

Recent Requirements

We’ve recently supplied Customers with these spare parts:

  • Smart Branching Unit (TU 21743)
  • DC/DC converter -24..-48V / -48V,-60V (21263)

These represent popular choices, but see below for an extended list of other immediately available items.

Future Dependability

It makes sense for Customers to use these spares as replacements as well as to add additional capacity to their existing networks, given the faultless performance of the products, rather than undertake costly and time-consuming wholesale replacements, given that in many case their basic telecommunications  requirements have not  changed.

Plus the ‘Dynanet’ product range has proven itself to be dependable over an extended period. How many of the latest products will be available in 5 or 10 years’ time, let alone in over 20 years?

Dynanet – an overview

 Nokia DYNANET is a family of multiplex, branching, cross-connect and line equipment.

The DM2 equipment has been designed for multiplexing analogue speech and signalling as well as data channels of different bit rates into a common 2 Mbit/s frame. The dynamic branching equipment DB2 and the cross-connect equipment DN2 increase the flexibility and application range in the DYNANET family.

The DYNACARD data channel unit selection covers the bit rates from 0.3 kbit/s up to 1984 kbit/s compliant with the V- or X-series of the ITU-T Recommendations. Other DYNACARD channel units provide specialised interfacing functions for Voice and Data applications.

The heart of the equipment is a MUX unit which is common to all channel and special units of the DM2 system. The MUX unit communicates through a 2 Mbit/s internal bus with the tributary units and carries out the 2048 kbit/s framing according to ITU-T G.732 standard.

The common MUX unit also inserts the signalling information into time slot 16 or provides the time slot 16 as a 64 kbit/s data interface, e.g., for use with a separate signalling equipment.

Analogue and digital services are realised with interface-specific channel units that connect to the DYNACARD bus. The channel units contain from one to ten voice channels, depending on the complexity of the interface.

Each individual voice or data channel can use any 64 kbit/s time slot, several time slots or only part of the capacity of one time slot. The allocation of time slots to different voice/data channels is independent of physical unit placement.

The DYNACARD VF channel unit selection provides analogue interface with signalling adaptation ranging from subscriber signalling to various types of junction line signalling. The signalling can be either channel associated or common channel signalling. In subscriber applications subscriber line testing is also available.

Immediately available from Refurbished Stock

Here is a list of items currently available from refurbished stock. All in excellent working condition, and can be delivered in a matter of days. No long lead time! But do remember that many items may be in short supply, so worth acting now and purchasing any spares you might need to avoid future disappointment!

Part Number Description
24204 TPSO H/W Module
CC 24002 DB2 Branching Unit, B2 2×2 Mb/s 75 ohm
CC 24011 DB2 2 Mb/s Switching Unit, X2 75 ohm
CC 24111 DN2 Control Unit (CU) 75 ohm
CF 24186.09 DN2 Subrack 19″, grey-L91 EMC
CG 24170 DN2 Bus Power Unit (BPU)
CU 24013 Data Interface Unit (DIU) 2M, nx64k: G.703/704, 75 ohm
CU 24101 DN2 Interface Unit (IU2) 2×2 Mb/s 75 ohm
T30506.09 17-slot DYNANET Subrack
T30851.02 Subrack Power Adapter (SPA)
T37870.01 NDM 19in 17-slot subrack
T37882.01 NDM DC Unit (NDUe)
T37889.01 NDM Backup Unit (NBU)
T65580.01 ACL2i PF GEN Line Terminal Card
TA 21513 Optical Line Terminal Repeater 2-8 M, 1300 nm LED MM/SM
TA 21516 Optical Line Terminal Repeater 2-8 M, 1300 nm LASER SM
TC 21301 DM8 Multiplex Equipment, 75 ohm
TC 21710.01 TMS Adapter
TF 21090.09 Subrack 19″, (EMC), grey
TU 21122.5 Data Interface Unit (DIU) 48..64k V.11 10ch
TU 21125 Data Interface Unit (DIU) 48..64k with sync, X.21
TU 21236.10 Channel Unit (CU) 8ch E&M/uP: 2xe&m/vf

This represents a list of the most common elements Customers need, but please do contact us if there’s something specific you’d like us to seek out for you. Always happy to help!