The acronyms UPC and APC are quite common in the fiber optic industry. APC stands for Angled physical Contact while UPC stands for ultra-physical contact.

Even though these two terms are closely related, there are certain differences that will help you distinguish one from the other.


The main difference between UPC and APC is the fiber endface. The fiber endface of APC connectors is polished at an eight-degree angle while that of UPC connectors is polished at no angle. However, this does not mean that UPC connectors are flat, they are slightly bent for better core alignment.

Another difference in the two connectors is in their color. APC adapters are green while UPC adapters are blue.


The meaning of these difference

UPC connectors reflects all the reflected light towards the source of light while APC connectors reflects the reflected light at an angle to the cladding versus straight back toward the source.

This in turn creates some difference in return loss, which is the measure of the loss of power in the signal reflected by discontinuity in optical fiber and it is expressed as a negative dB value. The higher the dB value, the better.


The recommended return loss for UPC connectors is -50dB or greater while that of APC connectors is -60dB or greater.

Return loss is different from the insertion loss. Insertion power refers to the amount of optical power lost from the insertion of a device into an optical fiber and it is used to determine loss budget.

It is easier to achieve a low insertion loss with UPC connector than with APC connectors due to more air gaps.


But with the advancement in manufacturing techniques, it is now possible to create more precise angles on APC connectors which has in turn helped to lower APC insertion loss to close to that of UPC connectors.


Moisture is a dangerous enemy of almost all sensitive electronic equipment with different electronics requiring a different amount of humidity.


An inclement weather, mist, condensation, or steam are not good operating conditions for electronic and electric components.

Some conditions cannot be avoided so it is important to take measures to prevent moisture-induced short circuits.

Among the solutions that can be used are using technologist moisture protection sprays such as Ultra that has ingredients, which ensures that treated parts of electronics are protected against vapor, water sprays, effects of weather, and oxidation since it protects the equipment against leaking current.


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Adding a dehumidifier is also another option of safeguarding your equipment. Silica gel-based dehumidifiers are the better than other dehumidifiers that contain calcium chloride since it is a corrosive chemical.

One should minimize the probability of condensation in heat sensitive components of electronics, use humidity data logger to check dew point conditions and moisture hardening the electronics to reduce water intrusion.


Outdoor projector enclosure @

Simple techniques such as maintaining proper ventilation in the rooms with equipment are vital in safeguarding electric and electronic components.


A few years ago I really struggled to land a job in the digital industry.

To be honest it was a pretty sad time for me. I’d been working from home on several projects successfully, when a Google update hit and wiped out my substantial monthly income overnight!

While I knew I could start again and still make a decent living from home, I knew I would have to get a job from 12 months in order to pay the bills, while re-building.

Entering the industry as an employee was a lot harder than I thought. Companies seemed disinterested with what I had achieved online, referring only to the fact I had very little experience working on client web design & SEO.

After many failed attempts at seeking employment direct employment I decided it was time to bite the bullet and seek the help of digital media recruitment agencies and it was the best thing I ever did.

As technology changes and software develop, so too is the world of recruiting, meaning that the application process, including the interview, can now be completed online.

The evidence is in favor of digital media recruitment, with 73% job applications successfully filed on social media and 42% of companies saying the quality of the person they’re employing has improved.

These agencies have all the contacts, know exactly who to speak to and are often made aware of job vacancies before they are advertised externally.

If you are searching for a position in the digital marketing industry, recruitment agencies simply can’t be ignored but instead embraced.




3 Ways To Know That Your Spouse Is Cheating In Chicago - Technological Advancements

For many couples in Chicago the more traditional ways like private investigating to uncover adultery use to be the only options for suspicious partners. More recently the rise in technology has seen GPS and SMS tracker software which has provided a cheaper equally effective alternative.

Before you make the decision to move forward in an attempt to uncover a cheating partner it’s very important you actually know they are lying. Below are some tell tale signs.

You ask your spouse where she or he has been, and you get an answer. You ask where the cash is going, and you get an answer. You ask who he or she was conversing with on the telephone unobtrusively, and you get an answer…but are the answers reality?

Presently you can discover without a doubt in a flash using private investigating. The accompanying systems are utilized by police and security experts around the globe to tell if somebody is lying or not.

1. Body language gives a liar away. If your spouse appears to be stiff and has restricted body movement, then he or she could lie. Somebody lying won’t utilize arm or hand developments while noting an inquiry. They will keep their hands, arms and legs near their body. This causes the liar to consume up less room and minimized him or herself.

2. A man who is lying will have a propensity not to look at somebody without flinching. If your spouse turns away and won’t look at you when to get some information about their whereabouts or Visa charges, then he or she is likely letting you know a falsehood.

cheating male partners

3. A liar will tend to touch their face, scratch the nose or behind their ear while noting an inquiry. She or he may touch their throat or mouth moreover. A liar is not prone to touch his or her midsection or heart range with their hand open.

4. If your spouse appears to consider his or her answer, he or she could lie. If the answer is by all accounts deferred or off the pace, then he or she could compose their answer particularly if he or she had lied before and remembered the last deceive conceal.

5. Search for enthusiastic gestures or expressions to be out of sync with his or her words. Case in point, you give your spouse a gift, and he or she says “I adore you!” however then grins much later after the announcement. He or she is trying to say the words and not so much importance them.

6. Search for gestures and expressions that don’t coordinate. If your spouse says “I adore you” and glares in the meantime, then it is a falsehood.

There are more signs and approaches to telling if your spouse is lying or being honest by using private investigating.


sms tracker

Searches for the best SMS tracker or similar technology have been on the increase. This is coming at a time where people want to discreetly keep an eye on their partners, spouses, children, enemies and other mobile phone users. At the same time, major technological advances are being made in regard to SMS tracking and monitoring.

What is an SMS Tracker?

An SMS tracker is a set of programs or software that allow a user to secretly monitor SMS and other phone activities of another user. This happens in full view of the user while the person whose phone is being monitored has no clue. The software keeps the person tracking up to date on the targeted user’s activities such as the sent and received SMS, picture messages, Texts, location and much more.

How Does an SMS Tracker Work?

A SMS Spy or tracker works by gathering information from the target’s phone and relaying the same to another user. The system comprises of four main components; Target phone, Server, Internet Cloud and Control Panel. After installing the spy software or app, it starts gathering information from the target phone and stores it in a server that is hosted on the internet cloud. The Control Panel is the end user’s phone which has access to the targets information stored on the Cloud server.

What are The Best SMS Trackers?

Finding the best phone tracker for SMS is becoming more challenging as all kinds of apps and software are discovered. Nonetheless, there are some top apps that standout in terms of allowing a user to view the history, accessing the phone a contacts, taking photos, tracing other activities, good customer support and more. Notable SMS trackers include Highster Mobile, Auto Foward Spy and SurePoint Spy.

Tracking the SMS and other phone activities from another smartphone has become reality. All that is required is installing the right software or app.In addition to offering all the vital information in real-time, the best SMS tracker offers the user peace-of-mind.

What is a Dashboard Cam?

While SMS trackers are used to keep a close eye on partners and loved ones, dash cams are used to keep a close eye on other people on the road. They have become increasingly popular after many insurance companies started offering a discount on premiums for drivers with dash cams installed. The dash cam market has become vast with a huge selection of various makes and models on the market. My Dashboard Camera is an excellent review site, providing the latest news and reviews on the best dash cams on the market.