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Hi, Is this post still alive? I have opened my V2000 after getting a high SWR on 2mtrs. After some time of checking caps etc, I found a poor connector on the feeder. Here is the inside of the base of the antenna. Can someone give an outline of what the coil/caps do please? Camerart

Hi, Handy chart for End fed antennas If it is possible I would like to make a handy reference guide on a single page with as many of the variables on it as needed. Once everyone has finished, I will try to collate it and put it up for you to check. I have attached a...

Hi all, I've just had a message from the analyser owner, who tell me that after some research, the analyser will not give long wire impedance higher that approx 500 Ohm, so that answers some of the conflicting posts. Cheers, Camerart.

Hi all, I've just had a message from the analyser owner, who tell me that after some research, the analyser will not give long wire impedance higher that approx 500 Ohm, so that answers some of the posts. Cheers, Camerart.

The wire runs down a slope, between 2x buildings, and not far from plants. I have just lifted the far end, by fitting a temporary plastic tube to the fence, so now it's about 3.5 mtrs. I was advised to use the 1.4 wave reading for stability, then double it. I tried with the different...

No. I'm trying to be a scientific as possible. Analyser on bedroom window ledge, wire (20.1+a little) up and over the top of the window, straight down to a porcelain insulator, then tied to the garden fence. I have just tried it with an earth to the analyser, different results but same...

Just checking. Did you notice that I connected the wire straight into the analyser, with no earth connection? Camerart

Ok. I have borrowed the analyser, and will be seeing the owner tomorrow night. The only thing that I can think of that might be questionable, is: The far end of the wire is terminated by a porcelain insulator. The near end comes through the top of a window and is trapped by it, leaving a...

Good. I removed the coax and stuck the wire into the analyser (No earth connection) indeed I'm now able to tune x = 0, frequency 5.45Mhz (In advanced Resonance mode). Although the zero flickers 0 -50ish. I shortened the wire (tying it back up the wire) aiming for desired frequency of...

Yes, quite correct, thanks Camerart.

If I understand what you are saying, I can't use the analyser for tuning a wire? Is this correct?

I'm getting advice from all directions, it's difficult to know which is good and which is bad

Hi, I'm still trying to get clear results, but haven't succeeded so far even with all of you help. Someone told me, that the analyser doesn't like simple wires because it is set for 50 Ohm and the end of a wire is much higher than this, and this is why my readings are all over the place...

Thanks Captain Kilowatt, I tried Analysing between 5 and 10MHz. I couldn't get a positive reading. X was between 500 and 102 and R was between 200 and 50. The only time I could get anything that looked to me like a proper reading was around 3Mhz, when it did look like you explained. (Please...

Thanks Mike, I'm happy with Metric, imperial or even knots on string as long as I arrive at the correct length. I'm pretty sure I have the correct length of wire plus a bit. I want to make sure we are all dealing with the correct thing. This is supposed to be a 1/2 wave end fed antenna for...

Thanks W5LZ, Yes, the metric system is a bit difficult at first. We in England changed to metric many years ago, and have to work in both systems when dealing with different countries. We also converted money from imperial to decimal £ S D Pound, shillings and pence. 12 pence in a...

Hi W5LY, I've done the 'type out a considered reply, then lost it, a bit annoying! I have started to copy and sometimes paste onto a TXT document, until it's safely gone, but not always:( Thanks for your explanation. The earth wire: Yes, the earth wire is connected to the braid of the coax...

Can I break it down a little and do it in stages, please? I twiddled = Result @ 2.913Mhz--SWR1.1-- x 0--R 58 I'm trying to understand 'j' Is it the same as 'X' ? I assume the wire is resonant @2.913Mhz so do I cut it or lengthen it to make resonate @ 7.030 Mhz I have an earth wire...

Not at all radio man, your input is welcome, but saying I've read a lot about it, doesn't mean I remember it. If I play with actual wires and readings, I more get the feel of what's going on. Cheers, Camerart.

Thanks Radiooman, I have read a lot about it, but I'm sure there is a way, that a wire can be analysed, and fairly easy rule of thumb methods can be used to work out the toroid and capacitor, without lots of explanations. Cheers, Camerart.