开云体育

I had not waited long enough, it did take a while and did pop up and run successfully. Thanks to all who replied. ----- Glen Jenkins, WB4KTF, Austin, TX

As I recall, 50 ohms on 1 ounce copper on an 0.031" board with epsilon=2.5 as microstripline was 0.1" wide. There's countless calculators out there. If you pick the board correctly, a 4 pin SMA

ONLY if you test that coupon at 2,400,000,000 Hz! Testing with the typical C Meter won't do it!?? The usual standard is 1000 Hz. The Er changes with frequency when you get in the MHz.and up.??

Copper-clad steel and woven copper (with a plastic covering or not) are other good choices for antenna wire. People have even used aluminum electric fence wire and horse fence wire with some success.

At a glance I noticed the wide traces at the connector pins, which are excess capacitance. Unless there is a compelling reason to do otherwise I tend to select a dielectric material whose 50Ω width

Especially the long waiting time is where many users think its not working... Yes it takes a loooong while :-) Dg9bfc sigi Am 28.07.2022 00:05 schrieb Stan Dye <standye@...>:

Most people do a test coupon, which is essentially what you're doing. Rogers Duroid(tm) is an example. It also has low loss at microwave frequencies - the issue is the glass in FR-4. Taconic is

Mine goes blank for a short while and then opens ?

The best is Copperweld wire which is a steel wire with heavy copper plating. You get the strength and low cost of steel with the electrical conductivity and corrosion resistance of copper. SherpaDoug,

I watched the video of how that calculator works and it is a mechanical nightmare. Yes it surely is a different kind of calculator, but God help you if for some reason it quit calculating correctly.

Also, just wait a very long time. It takes saver two or three minutes (seems like forever) to load up all the required python stuff, after that command window opens, especially the first time you

Those Curta calculators were the bomb for rally drivers in the '70s, but a bit rich (they still are) for my budget. The designer came up with the idea while he was in a WWII concentration camp IIRC.

My guess is that you may not be opening it with administrator privileges. Check your PC user account to see if it is a Standard or Adminstrator, and change as necessary. If it is already

Hello Folks, I am trying to install Nano-Saver for the first time. I downloaded Version 0.4 and unzipped it to my PC. When I run the .exe file a DOS type window opens and then NOTHING else happens.

Hi Doug, If you get round to experimenting with horizontal wires, bear in mind that the wire might stretch and sag under its own weight, depending on length and gauge of the wire. It is better to use

Hi I remember my late Father had a White slide rule. He had. EE from UCLA. he used at work. Martin N6QLh

Hi Christian I do lots of antennas on fiberglass PC Board, and typically the published Er value was measured at 1 kHz, At 2.4 GHz, Er is going to be in the 3.7-3.8 range.? You can check their spec

Hi I have a NanoVNA V2 Plus4. I am trying to validate a PCB 50 ohm transmission line (trace) to be used for 2.4 GHz Wifi. I am using a 4 layer stack-up (1.6 mm total) with the following configuration:

For all those slide rule fans out there. Check out this website: https://www.sphere.bc.ca/test/sruniverse.html

Ok, folks, let’s take the slide rule discussion offline, even though it’s very interesting. I have a Pickett C18-T made for Collins Radio, amongst other slide rules and enjoy yakking about them.