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Ok...I can top that! I once worked on a neuro memory cell in an amoeba and it was a one-bit memory.? All it could do was send the letter 'E'. Jack, W8TEE

Agree with all… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton –

well fellow hams i feel stupid. i didn't read the schematic correctly I'm used to using a mono plug and was using it in a stereo jack that was provided. found an old headphone plug with some cord and

Regarding that iterative algorithm to convert AD8307 ADC readings into voltsRF: We only need two calibration constants stored, perhaps the nominal 0.025v/dB and 100vrms full scale. It's the standard

Hi !? If you're referring to the solder mask, I've always just scraped it off using a jeweler's flat blade screwdriver(slightly wider than the trace you're trying to expose) . It acts like a

I remember that processor. I worked a project using Forth language. Everything was on the stack! rOn

Listening and calling on 7.277 a couple weak ones but too much static from lightning to copy. Standing by for a while? WS4JM

I can beat that, 40 years ago I worked on a traffic signal controller based on an RCA COSMAC1802 processor. The board had 128 bytes of RAM. Paul, VA6PW

nice pics. love the spark gap. true….. static from winds are the death to many amateur radio stations and some operators never would guess that the static buildup even on a nice sunny windy day

i use a dremal tool with a fine grit paper wrapped around a small grinding wheel for dremal tools. i reuse the stripped boards for my qrp projects.then i clean it with isopropyl alcohol. used to use

Emmmmmm. Colored, not random. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand

Well mathematically that only works in systems where the data is normally distributed or stochastically white systems. CW and SSB imposed on RF sampled at frequencies intermediate to those does not

Whatever crazy pattern, it will still just be a random scattering of readings, dependent on where the audio peaks and troughs are. Averaging helps. An easy way to average those RF voltage detectors

Hi I'm not? a programmer but what if you sample the forward and reverse and then alternate a few times ie reverse and forward, forward and reverse, and average the result.? I imagine this should

Joe it sounds like your digital interface is the problem or how your CW jack is wired. First check to see that your CW jack is per the uBITX wire up diagram. If that is OK then the Pull-up voltage

Hi Mark, No,? the text is correct. The paragraph is relating to the RF Gain control, not the volume control. We don't touch the wiper of the volume control. The wiper of the RF Gain control is

"Programming Arduino with an IDE is a trip as the arduino has nearly as much gas as a small z80 embedded hardware block back then. Considering the Mega2650 has almost 256K of flash even room is less

You can do it either way. Measuring everything all at once is easier, you only have to wire up the meter once, this is the method Farhan has posted on hfsignals.? He recommends 100ma per IRF510. ?

The bias is indirectly measured. You put an amp meter in series with the positive wire going to the power supply. Notice the current. I think it is around 150 to 200 ma. make sure the 2 pots are

Don, I think there is an error in the text as well: " Run a jumper from the wiper lug of the gain control and connect to the vacant pad of C3." It appears that should say, "...to the vacant pad of