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As usual, I'll reply with a bunch of questions which will enable us to guide you. 1) What is your intended frequency range? 2) How about a picture of the choke as well? 3) The picture of your

Just one comment from me on basic antenna design/performance that you can check with your nanovna. It seems that you have installed a dipole in your attic, properly center-fed. And it seems that you

Dave - W0LEV; Thank you for the insight. I will place the CMC choke as you suggest. I intend to calibrate in the attic using only a 6ft coax jumper to the antenna feed point. I will calibrate out

Well, Bill, WA2WIO, experience is the best teacher. Keep keep at it and keep us in the loop (no pun intended aimed at the loop bunch). If you need help/guidance with the NanoVNA, please post your

Your coaxial CMC should be installed just after the matching transformer between that and the coax. This is to isolate the coax from being part of the radiating structure. If you use the outer

Hello, Dave; Your suggestion is well taken. I am a member of the Ham Antennas grp as well. I did post some on this topic and will go back and see where I left off. ([email protected]). I

Warren, I think I stated that. "So a 100 watt station will give you 88.9 watts of ERP (Less cable loss and plus antenna gain)." So, I accounted for the fact that there would be cable loss and it

To Bill WA2WIO: Your original question of how to transform 25 ohms to 50 ohms is a good one for the NanoVNA-Users group, but this thread has now fully drifted into antenna system design (plus a few

I have a RF choke in a TS-530S that I'm trying to test for induction and frequency. I saw the methodology of building a loop to go around a coil to read this. I really don't want to remove the

Joe The loss attributable to a 2:1 VSWR cannot be stated as a constant. It is a function of the length and characteristic loss of the coax cable used. The additional loss in 100 feet of cable that

Excellent summary, Bill I would suggest the following during your ongoing attic adventures - run more power, at least 25 watts. 3 watts on SSB is a lesson in frustration, IMHO - get a decent CW audio

Thank you all for your considered and detailed suggestions and teaching points. To summarize what I believe I have learned: · I am running QRP <> 3 watts (uSDX+ HF), does not leave much

WHAT??? All that power being lost???? Seriously, a 2:1 SWR will only loose 11.1% of the power.? So a 100 watt station will give you 88.9 watts of ERP (Less cable loss and plus antenna

My.....my........ For heaven's sake......! What concerns about a meager 2:1 SWR!! Just go with it, get on the air, and enjoy. Dave - W?LEV [email protected]> wrote:

For Barry K3EUI "Also, just adding an inductor will not automatically increase the impedance. Depending in the initial antenna impedance, it may go up or down." I should have said that just adding

Hi Bill WA2WIO, Your antenna geometry and dimensions can be adjusted to achieve a wide range of feedpoint impedances for a specific frequency. Once the shape and dimensions are set, the complex

Hi Barry K3EUI You and others make an excellent point about the practical acceptability of of a 2:1 SWR. I agree that for the casual ham using commonly available equipment, it's probably not a big

its just several dipoles in parallel on the higher bands fed on the gap (almost similar to a fan dipole) except on 10m where it is 3 quarterwave ... on 40m it is a quarterwave against bent radial

Where in the H4 source code are MS5351m vs Si5351 configuration adjusted?

To measure the loss/gain of an antenna, both in transmission and reception, you will have to do it by comparing it with another one. For this, a field strength meter will be useful; the nanoVNA is a