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They seem to have a large price drop (~25%) when you go from 1 to 10 units...almost in half when you buy 25 units. Maybe pre-orders would help you cut costs. Jack, W8TEE

Ah noise, For my prototype, the first thing to do is to - somehow - quiet down that display. It makes a grinding noise; chunka-chunka-chunka-chunka. Sometimes, I can even hear it alongside the band

ARG!!! LT3042 and LT3045. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch - K9ZC Staunton, Illinois Owner - Operator Villa Grand

I attended an online seminar/ instruction/ discussions today (with a friend of mine) regarding power supply devices and I learned a lot. First off 7805 voltage regulators are very noisy. in fact

I presented the Right-Left Rule in the C Programming Guide book (1982) and there have been lots of examples written since then. This is a list of example you might use to test your understanding of

The TCXO-equipped T41 may have its faults, but stability or accuracy is not one of them. - Jerry

Bill, If you don't get any body else, I do have a spare display I can run at 3.3v and just change my main board J8 jumper to run the display at 3.3v.? Not a problem for me, I thought that 90 degree

Have a look at these two notes. An easy comparison of the K4 at $7K vs the T41… not completely 1:1 but close enough…. From

Didn't see you on had 3.3 version, sorry.

Bill, Set to 5v.? Sorry just saw your message. Hank -WZ3HMT

When I first built my Main Board, there was no audio. Bad solder joint(s). I put the board under a microscope and teased the pins of the DAC chip with an Xacto knife. If they moved, they weren't

I looked at pin 24 on Tweensy, Daudio-Out that goes to U5 audio processor. There is a signal there but it does not look any thing like a digital signal, I do see an occasional spike that coinsides

Hi Wade… the Assembly manual covers all of these topics… IF you need help with the input attenuator, just ask for the specific example (formulas are in the manual)… Dr. William J. Schmidt - K9HZ

Hi Dr Schmidt, and everyone here! I'm finally getting to start the build of your 20W PA semi-kit. I will eventually use it with my T41 build as I get there, but would like to experiment a little with

Huh… I’m gonna have to check this out… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner –

Actually it doesn't look that bad.? A while ago I cobbled together a slimmed down face plate to fit on a smaller printer bed and just uploaded it to oshcut to see what I'd get.? The powder coat set

Figgered that because OSH Park for PCBs is insanely expensive… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton,

*** My guess is ...if you have to ask... I was looking at OSHpark board service. For the same deal as $2 from JLCPCB, their price was $80. Except only 3 boards instead of 5. - Jerry, KF6VB

Well. this is interesting: <https://www.oshcut.com/> Laser Cutting and Sheet Metal Services | OSH Cut Wonder what is would cost to make a case for the T41 ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK

Perfect Hank, Thanks. What voltage is your display jumper set to on the Main board? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch