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Short version.... They try to compensate for people who wind up the mic gain too high to try to minimise how much of a splattering signal they transmit.

Have you figured it out yet? Easiest way to work it out is like this. First of all remember we're dealing with electrical fields, electrons and the like. Remember that electricity and electrons and everything to do with electricity like to take the path of least resistance. Now imagine a flat...

They've basically done exactly what I said in my earlier post, deliberately design the coax to be used as a RF ground, the main difference being no connection to the ground side of the mount and using a half wavelength so they don't have the cost of using a RF choke although personally I would...

Go find a physical globe and get some sticky tape. Draw a straight line with the tape from where you are to South Africa. You'll see it goes directly east. For me here in the UK to reach the USA I have to point my beam north west. If I point it west that gets me the Caribbean and Mexico. If I...

My 80ft long inverted L with a 55ft long horizontal section was made from stranded wire. We're exposed to westerly winds and it was orientated north/south. Several winter storms a year where wind speeds would get up to in excess of 70MPH and it lasted just fine. THe furthest end wasn't actually...

There are quite a few different manufacturers of the NanoVNA, it's just a case of finding a decent one.

Solution is actually very simple and you already have it. Use the coax connected to the antenna as a RF ground. When an installation has a piss poor RF ground the antenna system is trying to use the coax as one to try to compensate - it's the whole reason the old wives tale of "you have to cut...

I prefer stranded, it has more give.

That would be about right for their home market, the EU where we operate on two bands, the first being the same as the USA, the second being the UK PR27 which goes up to 27.99125Mhz.

Plenty of people are still running them, I think almost everyone in my town still on CB is using one. However like you say the price is mental, I was looking on Knights website and they must be three times what I paid for mine years ago. They used to be around £60 or so, now they're £150.

I'm noticing a common theme with them all which basically sums up my thoughts for years..... Not even half a S point difference between best and worst at low angle and to get any worthwhile difference you need to go horizontal/mult-element. Even if you throw in a basic 1/4 wave ground plane...

NEVER run negative straight to the battery. Run it to a point near where the main battery negative cable connects to the vehicle body/chassis.

All you need to test for RF currents on your feedline is one of these, a flourescent light tube. Key up, put it near your feedline and it'll light up to a varying level of brightness depending on how much current is flowing on the outside of the braid.

Wasting your time. RF choke at the antenna feedpoint if you're not using one, make sure you've no common mode RFI. Once that's been sorted then you're at the limits of what you can do as the noise will be what is being generated locally. Could always use a horizontal antenna such as a dipole or...

Can you have a flagpole? Many hams make flagpole antennas.

1.95 metre Sirio 5000.

Do it, use the Sirio SO239 body mount. They come with a handy screw on cap to put on them when you take off the antenna. Off the top of my head it's a 5/8" hole.

Mine looked like that after being laid on the floor in the garden for a decade. A quick clean up and check over for splits in the fibreglass and it was good to go again. I put on a set of fresh spring washers between each section as the old ones had gone well rusty.

Yeah ignore that, not really telling you a lot about how well the RF ground works and I'd not give two monkeys if that's what I had in an install where the SWR was at it's lowest. What is R when X=0? That'll tell you more about how well your RF grounding is. Using a 1/4 wave whip it should be...

You should look at Ultraflex. It comes in both 7mm and 10mm diameters, same as RG58 and RG213 but is extremely flexible and very low loss.