Spot the Mistake

This RG59 is only 75 ohms where it isn't sharply bent!

Yep.

I've no reason to believe that the BNCs are not 75 Ohms.

But the packaging: the bag itself is not big enough for the 2½" minimum bend radius, but they might have gotten away with that if they hadn't tied the middle of the coil up with a bit of "tie wire." Even after I'd removed it, I couldn't get the bends out of the cable.

BTW 3m was supposed to mean 3 metre, not Minnesota Mining and Manufacturing. My bad.

Send it back. It's garbage.

I take it this was shipped to you rather than your buying it at a shop? Send it back with a note.

I can see one end but not the other; I agree with Westman that there is something wrong with coiling up cables such as this too tightly.

I agree that the packaging is a bit tight but I don't see anything "obvious." Can you tell us what your issue is?

The scale next to the package is a clue.

Cable like this has a characteristic impedance, related to the insulation and the diameter of the inner and outer connectors. If you bend it and it is foam core especially, this ratio can change and create an impedance change. Normally not a problem, but it is frequency dependent, and at higher frequencies the impedance 'bump' can cause small reflections, which might be a problem. A time domain reflectometer can test the cable at the intended frequency and assess the risk. Normally it sould be sold coiled around 10 inches or more across.

So I was not specific in stating "how tight" I thought the packaging was.

I'm very aware of what happens when you "kink" coax. _{don't ask how I know that.}

By-the-way, the feed line to my 520+ft horizontal loop antenna is 75 ohm coax. Tunes from 10m to 160m.

I never thought foam core insulation worth poo on high frequency/speed cabling.

Poo insulation is really shitty for high frequencies. But on a serious note, all cables are tested for a minimum bending radius which is normally 15-20 times the diameter of the cable and wires are turned on a specifically sized mandrels, to check for insulation cracking. They are also normally tested for flexibility on a machine that runs for x thousand of cycles while a voltage, amperage is applied. So I am a little surprised the foam bending affects the frequency so easily.

I agree, that item was badly vacuum packed.

Why protect the guilty? They are quick to name and shame people in the media in the UK. Is this a self imposed thing or a fear of recrimination? My goodness, You tube does it all the time from all over the world. It is the 2nd protect the guilty I have seen in 24 hrs. Most starnge behavior sir.

I would tend to agree with the poster here, if you name them they will correct their poor ways and it can save others the problem of receiving the same poor quality service or damaged product and all that hassle of sending back, waiting, explaining, and all that time wasting delay. The alternate is go out and support the local stores in town and pick the item yourself. After all, companies spend a fortune on advertising there names in public and boasting. Fair is fair I think!

"... You tube does it all the time from all over the world."

YouTube is a bluddy open sewer. This is your standard for excellence-in-reporting?

Nah, contact the mfr and give them a chance to mend their ways first, then let the dogs out if they continue. He said they're normally quite reputable. This is probably just an oversight that can be easily corrected without rubbing their faces in the dirt.

TEFAL. I purchased their product in the UK then moved to another country. Yes, the guarantee was world wide. One day the item went on fire as my wife was checking the contents and burned her hair and face quite badly. When I sough to have the machine, now only 60 days, old replaced, and no claim for the damages to my wife, I simply got ignored by them. After pursuing the fault with them I was finally told that TEFAL was not responsible for their faulted machine because I was in another country and they did not need to cover the guarantee. There excuse was wrong voltage. The UK is 220v 50Hz. The country I was in is 220V 50Hz. In the course of my complaint, I took the machine apart, photographed the failure, and the damage it caused to my wife, took it all to the local TEFAL agents, who confirmed my findings, and TEFAL UK again ignored the complaint. So days end, I had all that frustration, medical bills, out of pocket £385.00 for the machine and a very upset and facially scarred wife. I learned the hard way and no longer give manufacturers the advantage. The have codes of practice, conduct, and mission statements plastered on walls. They should stand by their convictions and take the hammering when they step outside their own rules. Oversight or not, quality is quality and your money is quality along with your time and effort to select that supplier. It is not a right to have someone buy your products, it is a privilege that they chose your company and product. So they should be providing quality products, suitable for functionality and not, 'it will do'. The dogs must eat too. TEFAL, I don't touch their stuff at all and finally gave up due to banging my head on a wall.

As for Utube, I totally agree, but as a reference to getting to the world wide public, it sure has a big influence on things and certainly attracts millions of people.

Product Manager to Artsy Farsy Department: Make our company logo read "TEFAL ideas you can't live with." UKY DUKY, & MY ISLAND

Btw, get off my island.

The more reputable the company, the more likely hood of being counterfeited.