Відео

Tubing cutter??

The unreliability (nut is grounding conductor) and shortcomings (not watertight) of the PL/SO connectors have made me prefer N connectors wherever possible.

Thank you so much for making this video Ian. I just checked the box of 10 compression PL-259's that I purchased from M0mat a couple of years ago, and unfortunately they won't tighten up on my Hyendfed antenna that I planned to install this weekend. Fortunately, I haven't soldered them to the coax yet. They do fit my rig and other accessories, though. Hopefully, my neighbour will be able to help me by using his lathe. If not, I'll have to dust off the old Dremel.

Thanks for this Ian, I'll be having a look at all my PLs now, some are cheap ones some are M&P ones. 73s

A bench grinder will do allow the collar to rotate against the side of the grind wheel i had ten to grind back does a neat job

Thanks! However, if I ever run into such a calamity, I'll use a Dremel tool and not cut the tip off of the center conductor.

Seems like the LOG is worse?

That workbench of yours have seen some service lad 💪😂

Would not a rotary tool (Dremel) with a cutting wheel not be a little faster and allow you to avoid the centre conductor? Just a thought.

Problem on some radios especially cb’s. Sometimes a 90 degree elbow can be a fix.

Great Hack well done.

Done this too Ian although using my bandsaw. Always mean to take my remaining unfitted ones over to my dads and turn the excess off on his lathe for a tidier job. Conversely. If you buy all M0MAT items they all fit without mods.

I've also heard of some Chinese vendors selling connectors with a different thread pitch meaning then would only screw on a few turns before stopping, again with everything loose.

...and while you're about it, change everything to BNC!

Hi Ian, a lathe helps too, much cleaner and smooth cut. Have to do it before cable installation though. Cheers!

What an EXCELLENT info video ! ... FYI , having worked on VHF equipment ( 150 MHz , Ship to Shed ... sorry ( Heh ! ) Ship to shore , SOLAS stuff ... the RCA audio phono systen is OK and VERY CHEAP , for VHF ..... DAVE™🛑

Good video, Ian. I had the same issue with Messi and Paoloni PL-259s; they would not stay tight (2 different ones ordered a year apart from each other). I replaced them with crimp-on DX Engineering PL-259s and those work perfectly. I may try this trick to see if that solves the issue, but I do worry about stray cutting fragments. 73! de WX0V

I sorted some I had in my lathe. even some of the compression types that are fully threaded are too long for some SO239's, especially those where the SO239 flange is inside the equipment panel.

Cheap Chinese rubbish no doubt.

This item should be titled "The (out of spec) SO239 Curse"

You have the right fix for this problem. The real problem is that the grey box (balun?) is fitted with M style connectors. They have shorter threads than traditional SO-239 sockets. Those of us in Japan find this problem all the time. Thankfully, the big manufacturers (ICOM, Yaesu, Kenwood, etc.) know to use SO-239 connectors.

That has to be the most precision handheld hacksaw work I have ever seen. Had I done the same thing the same way they would have ended up in the trash. I would not have been able to deal with how ugly they would have turned out. (And no, I'm not kidding.)

Been there done that too, but why??? Why should we have to resort to this butchery when a PL259 should be a PL259 should be a PL259, at least the critical dimensional features. Another PIA is the thread pitch on some of the sockets I've come across being slightly finer whereby the plug wont screw on fully because of a different thread pitch/ form. Again, where have all the STD's gone in industry

Nice video Ian. It seems to me that this is quite a recent phenomena.. I don't remeber this being a problem years ago when i was in business selling this stuff. Nice work around though.

I wonder if it is the plug of socket that is out of spec? The sockets that I find to hand are threaded all the way down.

Yes, same idea! You beat me to it!

Great…. I thought it was just me ending up with this problem, happened a good few times now, I ended up putting them on a bench grinder, just watch your fingers 👍

I hate these style of 259 MORE than i hate XLR Jacks. And that's saying something. Infuriating. Nice fix mind ;)

Thank you.

You Should phase 2 verticals ian if you can usung the christman phase calculator online its quite easy ye probably know Some good stuff coming from asia and then later south America ect enjoy the dx Pat mm1dhu

Impressive Ian!

Frequency?

Which is which there Ian?

Amazing shack 🎉

The shack is looking great Ian! I miss my 5K so much 😭

Hello Ian, I hope you are well. I love your mast and bottom mounted rotator. So clever! Please could you provide details of the parts involved so I can look into it as a holiday option? Thank you, John 2E0SVB

Thanks mate for uploading the process, much easier to grasp KK5JY's design this way.

Tony Hancock the radio ham.

This is a total mind blower to me. 1. Why would anyone want to pay for a 358 cm of coax for the choke balun or a ferrite toroid with added coax when they could use 263 cm of cheaper wire for the radiating sleeve? 2. CB antenna designers are not the sharpest engineers. I don't understand why we need to emulate their misguided attempts at antenna design. There are easier and cheaper designs with more gain.

Hi Ian, terrible weather in 82 last night, setup in torrential rain, high winds and fog and then tear down the same. Great being portable isn’t it it lol Great to get you in the log again

Nice job done in showing the detail. I wish I could have seen this before building my Expedition a year plus ago. Some of us need the details!

You Ian are one of the last proper Hams, have a big thumbs up for your dedication alone as that is one heck of a portable setup for 70cm. 👍😁

I never knew the area you were in was so barren and high in elevation. At first, I thought you were in Northern Scotland. Here in North Georgia, and a suburb of Atlanta, the population density is high, with many hills, valleys and trees. Thank you for the information.

Which amplifier your using

Thanks for the FM Ian, gutted you couldn't do the SSB. Great setup

Nice video. I have one question/concern about the design, though.... Would it be more appropriate to switch the order of the two cores so that the 1:1 current balun (choke) is attached at the antenna side of the pair to convert the 200-ohm BALanced load to 200-ohm UNbalanced, then with the second core, transform the 200-ohm UNbalanced to 50-ohm UNbalanced? (So that the order is 1:1 BALUN to 4:1 UNUN with the antenna side being 200-ohm BALanced and the transceiver side being 50-ohm UNbalanced.) The way it is presented, as I understand it, in the video, the 4:1 UNUN is being used on the BALanced side of the circuit rather than the UNbalanced side of the circuit. This doesn't seem quite right to me, but maybe you have a good reason for it that I am not seeing?

Abandoned! Lightening strikes approaching from south 🙄

Good luck Ian. T/storms roaming here, plus heavy rain. I'll be staying home!! 73

Thanx for video Ian. Made exactly the same loop and hunting for very annoying qrm in my hood. To disguise the loop I used tennis racket sleeve which fits perfectly. Placed a little receiver and antenna into the backpack and off I go. Riding a bike around the neighborhood and found a house in front of which my receiver went nuts. Next step is trying to talk to the owner. Thank again and 73 de Mirza K9IG.

What a mess... Id throw it out. And what's with the farting noises?