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I'm using a NGP antenna in a camper for reasons. While an in-line SWR meter can cause issues, the VNA is the perfect tool for tuning. Got mine tuned to over 30dB return loss. Chris

Hi all It seems there is only 9 vertical graduation lines on the 4'' H4 version , if it can be configured to 11 graduations as with 4'' F version ?? 73's Nizar

These "No Ground" antennas use the coax feeding it or the ground connections to the radio as the counterpoise to the radiating element hence the recommendation to use the radio's SWR meter. I would

Its a proprietary cable and not just something like a make shift sleeve dipole. The shield isn't connected at the antenna side. Maybe it's somehow a J-pole using the coax?? I fail to understand

Sure sounds like the length of coax is part of the antenna matching.Especially true for an antenna without radials or a ground plane. So that extra length of coax between the radio and the SWR

I have a Firestick No Ground Plane antenna on order that I'm going to install for a friend. Reading through the reviews there are comments that you cannot use an external SWR meter to tune it. That

Dave, You're onto something, but to match 25 ohms to 50 ohms you need 1/4 wavelength (electrical length) of 37 ohm (not 75 ohm) coax. This is easily achieved with two 75 ohm coaxes in parallel. I've

Back to your question: no, you can't just turn around a 2:1 balun - that is, unless you re-wire it. If it is in a box that is easy to get to the internals, you may be able to flip the coil around -

One thought would be to use a 1/4 wavelength of RG59 for example at the frequency your dipole is cut for. I did not notice that reference in your original message. This should perform the proper

I use 1:2 transformers on all bands in my stackmatches similar to this one: https://www.ebay.de/itm/266831127121?srsltid=AfmBOooImSZ0y4ti-tVjjI7S-aKbKLn1DY4_1VuzjulCvvymePiyeIPa I use it also on my

Thanks, I remembered wrong. I know the LiteVNA64 card reader function Regards Maurizio

40m and 20m. Anything else is a gift. Right now, system is: 1/2 wave Dp antenna to about 40ft of RG58 coax to 15T coax wound CMC on a 4" PVC form to ATU10 to rig (SDR QRP for now, eventual 200w).

No, but LiteVNA support SD Card->Cardreader mode LiteVNA visible as external flash drive and allow direct read/write files

Could someone get the default color dump with the hex codes of the TinySA Ultra for me. I have done the upgrade, but something went wrong with the colors. The background is white, the spectrum line is

Hi , The NanoVNA-App SD Card function can works with the LiteVNA64 ? Lite VNA64 FW : v1.3.31 NanoVNA-App : v1.1.216 Thanks in advance Best regards Maurizio IZ1MDJ

Bill, Single band or multi? Because the 1:2 transformer (also use a ferrite choke) only matches the feed point essentially on one band (there will likely be some higher-order sorta-matches in there,

Greetings. I had a 40 meter dipole at 12' above ground with fair ground conductivity and had a feed point Z of 22 ohms and very little reactive component. I went to Balun Designs and bought a balun

Using a VNA to measure dipole antenna feed point characteristics has been discussed. I believe this is a little different twist. I have an attic mounted 1/2 wave dipole antenna with a 20-25 ohm Z0 at

Gervais: I have good news--- I've had similar difficulties getting to understand what to do with my NanoVNA-H4. I came upon a very informative book that I bought on Amazon to read on my Kindle app in

I should note that the idea for this came from Kurt Poulsen in the VNWA group.