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Great, thanks!

That was the situation when I tried that concept. Thunderstorms etc. :-) Arie Op 10-2-2022 om 21:32 schreef W0LEV:

Unless you live in an extremely RFI prone and RFI polluted area, you won't hear "antenna noise" on a crystal set. Further, the crystal set runs on voltage so the high-Z antenna is quite appropriate,

Hi Andy, I understand that you are talking about a crystal radio being an LC-circuit, a diode plus capacitor and a headset? You could measure the imput impedance of that receiver. Thing is that a

Hi Dave And that port is designed to look at a 50 Ohm load, not look like a 50 Ohm load! Sweeping the front end of most radios just gives you an idea of their preseclection.? ? ?Kent WA5VJB

They don't try. It's that simple. I've measured only one "vintage" radio of some 30 that put S-9 close to -73 dBm. That was the Swan 100MX. Of course, the rest of the S-Meter response is wonkered as

Thank You ?Larry. Joe

Yes

Simple question OK NanoVNA-H4 Unit is off and is charging via the USB cable. Red light is flashing I assume meand charging when it is steady and not flashing does that mean it is fully charged? Joe

Hi Arie, read your article with great interest. I understand my nanoVNA, I think, and I understand complex algebra and Z = R + jX. But I get VERY confused by standard radio or ham talk. I made a

Hi dear friends!!! What kind is your nanovna??? I has purchase few days ago a SAA 2 V2.2 but I cant find this option... Can You help me please??? Em 07/02/2022 15:39, DiSlord escreveu:

Coming back on the title, how to measure... I wrote an article about that a couple of months ago, measuring the input impedance of a Elecraft K3 receiver. It was published in the SARC Communicator

When I built my 486DX2 in 92, with huge help, my guru said to get 5x7 spiral-bound recipe card set to act as notes that he'd mention, as we go. It worked great! I had the reference, and writing things

Dave, Slight gaffe on my part... the 100dBuVemf is to calibrate the 60dB over 9 S meter full scale on all Kenwood Transceivers.. The dBuVemf is the kirchoff voltage source for sig generators with 50

Just lurking here, but does anyone actually look at an S meter while operating? Just kind of wondering. I'll admit I mostly do contests, so I'm way too busy to worry about the actual S meter reading.

Yea I kept looking at the data sheet thinking, those dimensions can't be right! As much as wanted to order some to protect my equipment, I quickly realized that it would take a pick-n-place machine to

I believe it. My very old (now) Icom 2100 single band VHF radio is even worse. I've seen the meter go from S1 to S9 with only a 6 to 7 db increase in power from the other end! Just asking, is it

Input regarding Kenwood S-Meters. I have and have rigorously measured the S-Meter input power vs. S-meter indication. It's off the wall for that radio, if there were a wall!! At some points below S-9,

As a reality check for those whose soldering skills might not have kept up to this task (mine for example): The Infineon two terminal part is about the size of Thomas Jefferson’s eyeball on a 2020

OK guys, here's a quick shot I found on the web. don't remember where but hopefully it'll answer your questions. Mike C.