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That's a great thought, unfortunately, I haven't had luck with two disputes using PayPal. In my case it seemed to come down to a "my word versus theirs thing. The problem was difficult to prove using

It is generally believed that the move to eliminate? AM radios in? cars is political not technical .Most conservative programs are on the AM radio band.

The 4-Runner was a standard internal combustion engine. The Ford Lightning is an EV. With the EV's comes a massive amount of RFI. It's so bad that manufacturers are eliminating AM radio from their

Hi, Larry, Note that measurements with a VNA will examine the impedance presented by the antenna as a source but not its efficiency at receiving signals. If you compare two antennas, you might see a

Or use PayPal which offers a better level of protection than dealing directly with AliExpress. Lester B Veenstra K1YCM M?YCM W8YCM 6Y6Y W8YCM/6Y 6Y8LV (Reformed USNSG CTM1) lester@... 452

I had the same problem with Aliexpress not taking my card. I think they view it as stolen or bogus and you need to call them and clear it up (Ha, Ha). I fixed the problem by opening a new account and

Here's a document of vehicle rear window antenna concept: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6239758

Can you take a photo of the car antenna connection that's in focus? Zack W9SZ llaassllaaass@...> wrote:

Larry- Perhaps someone here who knows the theory could briefly cover impact of antenna impedance when the antenna is used for receiving. I am posting because to me it seems the essence of your

I've had good results with Banggood. But you are always taking a risk ordering from any of these companies. They have zero customers service. Banggood seems to be the least horrible!

Enclosed is the photo of a car antenna's mounting. Note it is a single pin. Also enclosed is a picture of my Baofeng's antenna post. Note that the car antenna is a single post/pin. The Baofeng's

Thank you for all the replies. The first six pages of https://my.ece.msstate.edu/faculty/donohoe/ece4333notes5.pdf seem to address my question.

Thank you, Stan. That makes perfect sense. I was not aware that calibration sources could be different. I will check that option. Thanks again, Bob, KN4HH

If the displays are different while doing a measurement, it is very likely a calibration issue. Nanovna-app allows you to select the vna calibration or the app calibration. Make sure that is set to

Flash old firmware and see if you get the same problem.

I'm hoping someone can help me with my inability to calibrate my NanoVna classic after upgrading sucessfully to 1.2.20h.dfu. While attempting to debug this problem, I did the following: 1) Ran a

QUOTE: Consider this a benefit of the tiny battery powered Nano VNA. A measurement can be made with minimal impact on the device under test. Indeed. You hit the nail on squarely on the head. Consider

Dave, I understand your point about the counterpoise extension. However, I would think that the SWR readings would shift the same for both displays. What am I missing. Bob, KN4HH

Performance/measurements of the NanoVNA might change slightly with battery level. Try making the same standalone measurement with a full battery. Roger

Last night I was measuring a high Q resonant circuit on the bench with Nano VNA on battery. The battery was getting low and without physically moving anything I connected a USB cable from Nano VNA to