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Gordon, Gathering back memories from engineering school . Skin effect is frequency related as well as power and conductance dependent .? At DC no skin effect is present . increasing the frequency

Interesting, that still allows fairly large cables. I read somewhere that the people that run power from those large generators used on remote movie locations and stage lighting setups run parallel

Its the electrical equivalent of "beauty is only skin deep" !

Amazing !!

Skin effect is curious, here's a calculator. https://chemandy.com/calculators/skin-effect-calculator.htm For copper, it shows that the skin effect at 10mhz is 20 micrometers, so at that depth the

Don Have you pressed the knob to get into the menu system? Arv _._ wrote:

Interesting argument. Presuming that the case is all encompassing, then in the theoretical sense, the currents must flow on the outside of the case. Due to RF skin depth those currents won’t be

I'd agree with it coming through the mike cable. Just added this electret fist mic from Amazon to mine ( https://www.amazon.co.uk/gp/product/B07FRCPK88 ) which doesn't appear to have a shielded cable.

Thanks! Got to the menu at long last. Assigned the straight key and am in business. Thank you so very much! DC

I'd tend to mostly agree with Max. With DC and low frequency AC, and sometimes at RF, grounding with individual wires or traces from each circuit to a single point often works best, as KF6VB

switch off the keyer?!? Am 10.07.2021 um 20:08 schrieb Don Carter:

Maybe sometimes there is a nuance between agc and avc from the tube aka valve days. Its rarely as easy as it sounds. In a modern receiver like the ubitx, gain is minimized until after the xtal filter.

Hi Ashar, I succeeded in building the sbitx software from your repository on a RasPi-Zero on a recent/fresh copy of Raspberry Pi OS. The building went rather smoothly and had no errors but took like

Answering my own question - Looking at http://www.hamskey.com/2018/05/ubitx-firmware-cec-version-108-release.html - I'm guessing ST stands for "straight" as in straight key for CW Everyday's a

Re-read question. High-pass filter is the BCI cure. AGC or AVC is kinder on the ear. 73!

Question: AGC or AVC? AGC is automatic GAIN control - that cuts the gain of the incoming signal to knock back overly STRONG signals. AVC is automatic VOLUME control - that cuts the gain (usually of

Thanks for the link. It's a bit of an unknown this box. I got if off ebay and there was lots wrong with it - the speaker had come detached in shipping and rolled all over the PCB smashing a couple of

Hello Peter, I’ve been trying to reach you via direct email about the boards I shipped and haven’t heard back. Perhaps my messages are getting caught up in spam folder? Best, Jim KM4TXR

This might help... http://www.hamskey.com/2018/05/setting-smeter-to-ubitx-with-cec.html

Don, To get to the v6 menu you press and hold in the encoder for 10 seconds or so until the settings menu comes up.? You then use the encoder to select the CW Keyer and then press the encoder to