#75: Getting the Most from this Channel (Especially New Subscribers) W0QE 2018-12-27 | http://www.w0qe.com
#105: Using EZNEC Data in SimSmith and a Big EZNEC Change W0QE 2021-07-30 | There are no files to download from this video:http://www.w0qe.com
#104: Plotting One More Time W0QE 2021-05-05 | PLEASE NOTE that I accidentally repeated a small section of the video from about 4:50 to about 6:30. Just skip over this and sorry for the mistake!To download files from video:dropbox.com/sh/iy89dyl4a17jvlt/AAB8MWy7IiW3I9AVPW6Wfw9La?dl=0Video #69: Plotting Revisited and Some SimSmith History youtu.be/H_insNRw2XYVideo #88: Stale Data youtu.be/t34dzWyNMfgVideo #97: Z vs Zin vs invZ vs revZ Functions youtu.be/TECkmG6WnTohttp://www.w0qe.com
#103: Buying and Analyzing Used Attenuators W0QE 2021-04-18 | To download files from video:dropbox.com/sh/iy89dyl4a17jvlt/AAB8MWy7IiW3I9AVPW6Wfw9La?dl=0http://www.w0qe.com
#102: Reciprocal Circuits s21 = s12 For New VNA Users W0QE 2021-04-15 | To download files from video:dropbox.com/sh/iy89dyl4a17jvlt/AAB8MWy7IiW3I9AVPW6Wfw9La?dl=0http://www.w0qe.com
#101: Attenuator Circuits W0QE 2021-04-10 | To download files from video:dropbox.com/sh/iy89dyl4a17jvlt/AAB8MWy7IiW3I9AVPW6Wfw9La?dl=0http://www.w0qe.com
#100: Files Available for Download W0QE 2021-04-09 | To download files from video:dropbox.com/sh/iy89dyl4a17jvlt/AAB8MWy7IiW3I9AVPW6Wfw9La?dl=0
#99: A New Way to Plot Impedance and a Surprise W0QE 2021-03-25 | This has been a fun video to make and hope others enjoy it.To download files from video:dropbox.com/sh/iy89dyl4a17jvlt/AAB8MWy7IiW3I9AVPW6Wfw9La?dl=0http://www.w0qe.com
#97: Z vs Zin vs invZ vs revZ Functions W0QE 2020-04-21 | A look at various ways SimSmith can analyze impedance in a circuit and their uses.http://www.w0qe.com
#96: Can You Measure a 10k Impedance at 100MHz with a VNA W0QE 2020-04-20 | I decided to not include the temperature & voltage effects on the measurement accuracy as the video was getting too long but they are important and were significant.To download files from video:dropbox.com/sh/iy89dyl4a17jvlt/AAB8MWy7IiW3I9AVPW6Wfw9La?dl=0Previous video #95 youtube.com/watch?v=1UbEz73FGCUhttp://w0qe.com/Measuring_High_Z_with_VNA.html (done in 2011)http://w0qe.com/Measuring_RF_Impedances.html (done in 2015)
#95: Three Methods to Measure Impedance with the NanoVNA W0QE 2020-03-02 | Are you aware that there is more than one method to measure impedance with a VNA? You might find this video interesting.To download files from video:dropbox.com/sh/iy89dyl4a17jvlt/AAB8MWy7IiW3I9AVPW6Wfw9La?dl=0http://www.w0qe.com
#94: What Effects Do Transmission Lines Have? W0QE 2020-02-20 | What effects on impedance do the 5 variants of transmission lines have? Previous Video: youtube.com/watch?v=79jbor_T9PU&t=128shttp://www.w0qe.com
#92: Antenna Matching Range with Capacitors Only (MFJ-933) W0QE 2020-01-22 | Being able to easily analyze common RF problems such as impedance matching is something I wish I had access to when I was younger!http://www.w0qe.com
#91: NanoVNA Initial Observations W0QE 2019-10-24 | The NanoVNA is a very interesting product and these are my intial observations.http://www.w0qe.com
#90: Building VNA Calibration Loads - Revisited W0QE 2019-10-10 | Small modification to allow the upper frequency limit of my home made open/short/load VNA calibration standards to be extended to 3GHzVideo #77: youtu.be/xLGSblc-FecVideo #78: youtu.be/NSAQ2iQNX2Ihttp://www.w0qe.com
#88: Stale Data in SimSmith W0QE 2019-06-27 | This short video shows how SimSmith can appear to calculate incorrectly and how to avoid what is called "Stale Data".http://www.w0qe.com
#87: Measuring Coefficient of Coupling W0QE 2019-06-13 | 3 methods are shown to measure the coefficient of coupling for coils.To download files from video:dropbox.com/sh/iy89dyl4a17jvlt/AAB8MWy7IiW3I9AVPW6Wfw9La?dl=0http://www.w0qe.com
#86: SimSmith Versatility: Zcen, Zswr, Zgen vs Zo W0QE 2019-05-27 | The ability to independently control the reference SWR impedance, the generator impedance, and the center of the Smith Chart is very powerful. I produced this video 9 months ago but thought it was too complex. However recent comments about these topics have made me reconsider that decision. Enjoy!http://www.w0qe.com
#85: Conventional Transformers vs Auto Transformers for RF use W0QE 2019-05-24 | A look at the possible advantages of using an auto transformer vs a conventional transformer for RF designs.http://www.w0qe.com
#83: Toroid Core Sizing W0QE 2019-04-05 | A look at what flux level will cause unacceptable heating for various materials in the HF frequency range.http://www.w0qe.com
#82: Real Antenna Impedance, Maximum Balun Stress, and More W0QE 2019-03-08 | This topic is quite complicated and not well understood. I hope the video and the downloadable files allow you to experiment further.http://www.w0qe.comhttp://www.w0qe.com/SimSmith.html to download files in this video
#81: Balun Heating Experiment W0QE 2019-02-21 | Experiment to show that balun heating is due to common mode voltage. It's a good day when experimental and simulated results match! http://www.w0qe.com
#80: High Power Balun with #31 Ferrite Material W0QE 2019-02-11 | An analysis and measurements using #31 ferrite material at HF for high power operationhttp://www.w0qe.comhttp://www.w0qe.com/SimSmith.html to download files in this video
#79: Cascading SWRs W0QE 2019-01-25 | This a fun example that you can play along with. Enjoy!http://www.w0qe.com
#78: Building VNA Calibration Loads W0QE 2019-01-18 | Building your own VNA calibration loads is easy with a little care!http://www.w0qe.com
#77: The Reference Plane W0QE 2019-01-15 | Understanding the reference plane is extremely important if you wish to make accurate measurements. Enjoy!http://www.w0qe.com
#76: Measuring RF Impedances WIth an Oscilloscope W0QE 2019-01-03 | Using a dual trace oscilloscope to measure RF impedances may not be as convenient as a VNA but works and is an interesting and easy to do exercise. It may be your only choice if you dont have a VNA. SimSmith can help you with the complex number math.http://www.w0qe.comRUSE block code which you may cut from here abd paste into SImSmith.//Z measureWave("V1pk",V1,"V"); Wave("V2pk",V2);Peak(V1,); Peak(V2);Plot("Delay V1 to V2",(Angle(V1)-Angle(V2))/(360*G.MHz*1e-3),"ns","y2");Zssc = R1_*V1/(2*V2-V1);V1meas; V2meas; V1toV2; // Positive delay if V1 leads V2$del = V1toV2*G.MHz*1e6*2*Pi; // delay in radians$V1calc = V1meas*Cos($del) + j*V1meas*Sin($del);Zcalc = R1_*$V1calc/(2*V2meas - $V1calc); Smith(Zcalc);
#73: Transmission Line Transformers, Part 1 W0QE 2018-12-19 | Introduction to transmission line transformers.http://www.w0qe.com
#72: Minimum Loss Pad - Using a 50 ohm VNA in a 100 ohm Circuit W0QE 2018-12-12 | http://www.w0qe.com
#69: Plotting Revisited and Some SimSmith History W0QE 2018-10-30 | http://www.w0qe.com//Plots I used in the video/*Built in Smith, Power, SWR plotting with color choosingPlot( something ); most general case fundamental frequency onlyWave( something ); to show relative phase and useful with HarmonicsRMS( something ); voltage & current without Mag, correct for HarmonicsPeak( something ); useful mostly with HarmonicsPower( something ); = total power including harmonicsPlot( something , "PWR"); = power of fundamental onlySmith( something ); plot on Smith Chart, do NOT use Plot(something,"Smith");SWR( something ); = Plot( something , "SWR"); special Plot shortcut5 possible axes: Smith, PWR, y1, y2, SWR ******************************Plot( pen specs , "name" , WHAT , "axis name" , "axis" ); ****************WHAT can be plotted?Component.sub-component.measurementL.V, R1.p, A.R2.v, C1.Z, C2.Zin, L.invZ, L.revZ, any math etc..p = power dissipated in component and .P = power delivered to component.v = voltage across component and .V = voltage from component pin 1 to gnd Plotted from where?Generator block, every D, F, N, RUSE block and maybe more places. Why?*///Examples:Plot(Mag(R1.V));RMS(R1.V);RMS(RGBA(1,.5,0,1),"Color",R1.V);RMS(Stroke(4),"Wide",R1.V);RMS(Stroke(6,6,5),"WideDash",R1.V);RMS("stars","sm.stars",R1.V);RMS(Stroke(5),"triangles","lg tri",R1.V);RMS(RGBA(0,.5,.5,1),Stroke(8),"dots","all",R1.V);Wave(Stroke(4,8,3),G.V,"Volt","y2");Wave("Cap V",A.C1.v,"y2");Wave(R1.V,"y2");
#68: Isolation Transformer Warning! W0QE 2018-10-13 | Using surplus medical isolation transformers as general purpose isolation transformers.http://www.w0qe.comhttp://www.w0qe.com/SimSmith.html to download files in this video
#67: Have You Seen This Type of Plot Before? W0QE 2018-08-26 | Compensating RF transformers for broadband use.http://www.w0qe.com
#66: Toroidal Core Winding Results W0QE 2018-08-09 | A look at how to effectively wind toroids. There is a lot of information in this video. Enjoy!To jump directly to the common mode choke data 17:21http://www.w0qe.com
#62: What Really Is Going On Inside a Transmission Line W0QE 2018-07-14 | I'm finally back after my shoulder surgery.You can do this experiment yourself with minimal equipment.http://www.w0qe.com
#61: Variable Antenna Switcher W0QE 2018-05-16 | I am having shoulder surgery due to a mountain bike incident and will be immobile for 6 weeks or more. I will be back! Use this time to view older videos you might have missed. The SimSmith file in this video is available to download. See below. http://www.w0qe.comhttp://www.w0qe.com/SimSmith.html to download files in this video
#60: Markers and More W0QE 2018-05-14 | Using SimSmith markers and other features to be able to understand the circuit more clearly.http://www.w0qe.com
#59: More than 20 Ways to Match to a Single Impedance W0QE 2018-04-24 | There are probably more ways to match RF impedances than might have thought. Enjoy!http://www.w0qe.com
#58: Showdown Between Two Ways to Calculate Circuit Matching Range W0QE 2018-04-22 | Should the new "invZ" feature replace the old way of calculating circuit matching range?http://www.w0qe.com
#57: Easing Into SimSmith Ver 16.3 W0QE 2018-04-21 | Look at some of the new basic features of ver. 16.3. Download it now!http://www.w0qe.com
#56: The Smith Chart and Nothing But the Smith Chart W0QE 2018-04-15 | A look at how impedances on the Smith Chart move as the impedance at the center of the Smith Chart is varied. http://www.w0qe.com
