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All of the suggestions that have been mentioned will probably work to lower the SWR - but will it make any real difference in your radiation? Probably not. In short runs of decent coax, any loss

Indeed but modeling multiband antennas with traps and internal components with multiple coupling mechanisms can be full of interesting challenges? ?Sent via the Samsung Galaxy S24, an AT&T 5G

Mike M really interesting fixture it looks really good. I'll probably try to make it with our european version of the electric connector (wago, it looks the same). William I took a look at the book

A co-linear vertical dipole design. Using coax as the elements to linearly load the element. Fed like a dipole in the middle instead of an end fed like most vertical antennas. Sure you can put that

Why not contact the manufacturer and ask? https://gapantenna.com/shop/titan-dx/

Modeling wont work. This antenna uses multi coax sections folded and placed inside the tube, with the feed point at the mid point, and section dropping below the tube with the coax connector. So far I

Yes, two parallel connected 1/4 electrical wavelengths of 75-ohm cable will map 25-ohms to 50-ohms. That's the easiest solution. I don't know of any single reference for using coaxial matching

Dave, Frank; Wow! Thank you for the detailed suggestions. Question: How would tuned stubs accommodate multiple bands? 40m (1/2 wave nom 66ft)/20m (nom full wave), maybe even 15m (nom 3/4

This isn't something the NanoVNA can measure. Any free antenna modelling software can tell you though. Just download a flavor and enter all the antenna specifications it asks for. It'll tell you what

Has anyone measured or seen the gain factors for an antenna like the Tital DX. I have used one for 16 years, moved it to 4 different locations and it has never faild. But I am curious about its gain

Hi All Did H4 version need an external screws to fixe the two SMA connectors to the plastic case , indeed electronic board should not have an excessive mecanical constrainte during SMA feeting to

1:2 would mean SWR 0.5 A SWR less then one is impossible. 73 Peter, DJ7WW -----Original-Nachricht----- Betreff: Re: [nanovna-users] Dipole antenna with Low Z0 feed point Impedance Datum:

It appears to be going away: "March, 5, 2024; Important notice: The lifetime of ARTA development has come to an end. After more than twenty years of ARTA software development I decided to stop

Consider the case of a 100 foot long, 50 ohm coax feedline on 20 meters. And let's look at three different types of coax. Below are the losses for 100 feet with a VSWR of 1:1 RG58 - 1.55 dB RG8X -

Other than the 2:1 reading on the SWR meter what negative effect have you experienced. 55 years worth of rigs, tube and solid state, I have never experienced an ill effect from a 2:1. Warren Allgyer

some rigs are not that happy with 1:2 SWR dg9bfc sigi Am 12.11.2024 16:10 schrieb "Warren Allgyer via groups.io" <allgyer@...>:

You have a resonant antenna with an SWR of 2:1 which is completely inconsequential at 40 and 20 meters. There is no functional reason to do anything to correct this; you will see no improvement in

A basic PC sound interface is simply a group of analog-digital and digital-analog converters. They operate at least in 16 bit resolution, while many have 24 bits. The sample rate is settable, at least

Hi Steve Thank you Steve, helpful link. 73's Nizar

You might consult the docs for a start. From the beginners guide: https://nanovna.com/?page_id=46 look at number 4 Steve N5TIN