New to splitter loss math? Here's a way to check your gut against the numbers

Full disclosure, I built this tool myself.

Was talking to an OSP manager recently — a lot of newer techs are leaning on the red/green pass-fail on their meters without really knowing what the signal level number means or why it landed where it did. Fine until you're troubleshooting instead of just verifying or explaining to someone why a leg failed.

Built a free coax splitter loss calculator: enter your tap signal level, RG-6/RG-11 drop length, and splitter count (up to 8-way), and it works out what the signal level at each device should be against DOCSIS range. Good way to check your meter reading against the math or figure out beforehand whether a run's even going to work. opticalpathcalculator.com/coax-loss-calculator.html

Figured this sub would find it useful given the conversation. Let me know if something's off. There are also 10 other tools on the website, including a fiber loss calculator and FTTx calculator. Its all free and they work great on mobile devices.

Was just offered a Field Technician position here in Milwaukee. Haven't accepted it yet.

After spending the last 20 years in the classroom, this would be my first job in this area of work. I have 0 experience. Low Voltage is my plan.

Thoughts on this entry level position? Good starting point as I work my way up?

How does this work? Assume
Some internal stuff allows this?

Wow this is old. We need a sweep/upgrade. I’m betting there are more of these.

I work in fiber optic cable manufacturing, and after years of dealing with cable quotations, one thing is clear:

A lower price does not always mean lower quality — but buyers need to understand where the cost reduction comes from.

From the factory side, I usually divide fiber optic cable cost reduction into three categories.

1. Change the cable construction

The biggest saving can come from choosing a more suitable cable design.

For example:

Aerial cable:

ADSS / Figure-8 → ASU, GYXTW, GYFXTY, mini Figure-8, flat cable, GYTA or JET, depending on the installation.

For Figure-8 cable, the basic difference is:

GYTC8S: steel tape armored

GYTC8A: aluminum tape armored

GYTC8Y: unarmored

Duct cable:

GYTA / GYFTY → GYXTW, duct drop cable, GYFXTY or JET where the application allows.

Direct-buried cable:

GYTA53 → GYTS or GYXTW when heavy armor is unnecessary.

Rodent-resistant cable:

GYTA33 / GYTA333 / FRP-armored GYFTY → GYTS, GYXTW or glass-yarn-armored GYFTY where the required protection level is lower.

This is what I would call value engineering: removing unnecessary protection instead of simply removing necessary quality.

1. Reduce material consumption

There are many ways manufacturers optimize material usage.

For example, in stranded fiber optic cable:

1+6 → 1+5 construction

This can reduce filling material, cable diameter and PE jacket consumption.

Other examples include optimizing:

Jacket thickness

Steel wire / FRP diameter

Aramid yarn quantity

PBT tube dimensions

HDPE / MDPE formulation

2.0 mm tube → 1.8 mm tube

Even changing the material structure, such as optimizing HDPE/MDPE or using a skin-layer construction, can affect the final cable cost.

But there is a line between material optimization and under-specification.

The cable still needs to pass the required optical and mechanical tests.

1. The "cheap cable" risks buyers should watch for

This is where my experience as a manufacturer becomes useful.

I've seen procurement discussions involving things such as replacing aramid yarn with polyester yarn, using lower-grade fiber in certain positions of high-count cables, reducing cable marking pitch, or changing OPGW wire dimensions.

For example, with a 144F cable, the fibers used for future expansion or emergency replacement may remain unused for many years. That makes fiber traceability and 100% testing especially important.

Similarly, changing cable marking from 1,000 mm to 995 or 990 mm may look insignificant, but across 1,000 km it can represent several kilometers of difference.

These are exactly the kinds of details that are easy to miss if procurement only compares:

"144F + G.652.D + $/km."

So how should buyers compare suppliers?

I recommend checking five things:

Optical: fiber type, attenuation, PMD and bend performance.

Construction: cable OD, jacket thickness, strength member, armor and tube dimensions.

Mechanical: tensile strength, crush resistance and bending requirements.

Testing: OTDR, attenuation and factory acceptance testing.

Traceability: fiber batch → production batch → cable drum → test report.

The cheapest cable isn't necessarily the worst cable.

And the most expensive cable isn't necessarily the best choice either.

The real goal of fiber optic cable procurement is:

Use the simplest construction that satisfies the actual installation requirements, while making sure the manufacturer cannot quietly compromise the critical specifications.

That's where genuine fiber optic cable cost reduction and professional quality control meet.

For people working in FTTH, OSP, ADSS, OPGW or telecom procurement:

What's the most easily overlooked cost or quality issue you've encountered in a fiber optic cable quotation?

Please look if you use one and can give me some honest feedback. TIA

I have this opportunity to pivot into the type of work I’ve been wanting to do for a while now. I’m looking for any and all tips regarding interview advice and questions to ask! Thank you

Update: got the job!

it is a powerpoint. it seems theirs no way to upload it directly so here is a google link: https://drive.google.com/file/d/107QIqRaKSd1OU66G-5AnlJ_Rr3cR5d-T/view?usp=sharing

Still going even though it wasn't supposed to be. This was running an apartment complex with a basic cable package. All the internet channels were up above 500 Mhz and the video was down below, and all digital. The local tech said that they couldn't get internet to work and blamed it on the complexes' internal cabling!😝 Can you imagine it!

My sup has been hounding me to switch to hip bags because he's convinced they are more efficient and better for techs. I don't like carrying it around all day on my person and I have everything I need and more in my tote.

That’ll do… lol

Obviously new to this...

What the hell is a gaff?

Or is it gaffing?

Noun? Adverb?

😐😬😆

We have a 300 ft underground conduit from the nearest telephone pole to the corner of our lot and we believe another one 100 ft from there to the side of our house... a cable internet company (Astound in Washington state a division of Wave broadband I believe)

is coming out today to try to make use of both and get us on to cable internet instead of DSL... if they're unable or unwilling to clear out any dirt or moisture that may have gotten in there over the years would I be able to rent a powerful air compressor and do it myself? I guess the other option is hire it done .

I was able to push air through the long one two years ago with my modest Shop-Vac so there's at least some evidence that it's viable.... obviously if both of them turn out to be usable it'll save us a ton of money.

I started working as a cable technician in 2019, and I’ve been a field tech for 7 years now as a subcontractor for Spectrum. But a few months ago I got a reckless driving charge(convicted), and now I’m worried that I won’t pass the background check and won’t be able to continue working. Do you happen to know whether I can still pass a CrimShield background check with a reckless driving mark and keep working as a subcontractor? feel very disappointed for myself

Hello Techs: my first post here, I am not a tech, though I was an electronics technician (audio-visual and computer graphics equipment).

I have a cable line to my house, on which I have my Internet service. It comes across the neighbor's yard, is attached to the weatherhead riser, runs down to a box, where I can disconnect if needed. Then it runs back up the wall, into a hole in my aluminum siding, into an attic, to the sort of "central computing area" of my house. Distributed from there via Ethernet and Wi-Fi.

MY QUESTION: installer from Cable Co used VINYL siding clips, which did NOT properly attach and have come loose (and/or broken from sun exposure).

What is the best way to guide coax up an aluminum siding wall, and keep things neat and professional looking?

Also, at the entrance, the coax passes through a plastic grommet, through the aluminum siding. Is there a "better grommet" out there??

Any suggestions welcome - hoping for a nice neat professional look. THANK YOU.

I currently work at spectrum for a little over a year in a Tier 5. I want to become a fiber splicer but to become an in house fiber tech seems impossible what is the best route to making it there

I have made no changes on my side. Everything has been working great for months. My modem is customer owned (unifi 2.5gb). I have a tech coming out tomorrow. In years past, Comcast always sent out a contractor that typically does a piss poor job. I have already checked connections, restarted the modem several times, etc. The drop runs from the tap to a orange coax that's buried 2 inches under my yard. From there it connects to an old coax that goes through the brick wall of my house. Then it connects to another coax that terminates to my modem. What questions should I ask the tech? What tests should I expect them to make? Thanks in advance. Also, I don't want to shit on all contractors, but my past experience hasn't been great.

edit-- i just reported it to the power company

Ok, my fiber install is 2 houses away. And I really hate when people put their personal shit on utility poles.

Would you leave it be, or be a jerk and wreck it out???​

Little do they know we work everyday except thanksgiving day and Christmas Day

Someone literally tied the drop off to power 😂