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Richard, It is a short blue arc at the right edge of the chart.? Pretty hard to see unless you save the image and enlarge it. --John Gord

I see zilch on the chart. Did something get left out? -- Richard Knoppow Los Angeles WB6KBL SKCC 19998

Here's what you should see on a smith chart with a start frequency of 1 MHz and a stop frequency of 2 MHz when resonated at 1.45 MHz with a 187pF cap and with a series 50R resistor inline.

If it helps add some confidence to this stuff, I used the air cored solenoid model in Genesys to predict the inductance and Q vs frequency for your coil. 49 turns 31mm diameter length 22mm wire

I asked for the 1206 size as I only needed 1/8W and the price was less. Here's the part https://webdirect.texascomponents.com/ProductDetails.asp?ProductCode=VSMP%5F1206%5FCUSTOM%5F0%2E01 Looks like I

If I go with what you posted earlier I can assume that your current tank coil has 49 turns on a 31mm OD former using 0.4mm diameter wire (close wound) I can punch these numbers into the software

That's surprising to me - I hope they're not changing their business model. I've been able to order single parts at my exactly specified value to two decimals before, on the Z201 variety. Is this what

I contacted TTC and the reality is less exciting than what their website suggests.? T heir reply was "The MOQ for the series is 5 pc. since is a very peculiar R value." Not sure why my 'any custom

Hi jmr, Well, it's an interesting methodology for sure. I do have a Nanovna which I bought purely for evaluation purposes, but I have two proper lab-grade HP VNAs as well. Can't recall the model

Thanks, Froggie. By all means PM me when you have access to all your test equipment again.

Personally, I have found that the laser printer at home doesn't do this while the ones at work and in the print shop I use do --- the difference may be that the one at home is black+white only and is

That is correct, the firmware is the same for both. I have used exactly this firmware to update my 8341B without issues.

Hi Group check the power switch they tend to fail on those. if the PSU is faulty contact me on OZ11LPR@... I have alot of parts for those units. It is a pain to work on that powersupply type.

Like Chuck said, laser printed items tend to stick to other stuff over time. I haven't seen it too bad from one paper sheet to another, but definitely from paper to plastics, or (toner sides) face to

There is no differences in CPU board and firmware between 8340B and 8341B. Calibration constants 79 and 98 must 2 for 8340B and 5 for 8341B, according to service manual.

Jinxie, I should return to the lab in a few weeks. Can crank up my HP 4195A network -Spectrum analyzer (500 MHz) Also the Boonton / Measurements GDO and Q meter With a photo and specs of the coils you

OK..... quite a lot to digest there and it's rather late at night in my zone right now so I'll have to re-read this in the stark light of morning. I think it would be illustrative to post a photo of

Modern laser printers and copiers use a finely powdered plastic toner to create the letters and pictures that are on the page. The plastic dust is placed onto the paper electrostatically, and is fused

Don't get too enamored with tracing out and debugging your power supply, 9 times out of 10, the problem will be simply a case of bad electrolytic capacitors. I am not being casual with my statistics,

Note that the 6cm diameter loop antenna ideally needs to form a closed loop, so one end of the loop connects to the centre pin of the coaxial connector and the other end of the loop connects to the