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All: I'm winding the toroids for a new LPF board. Because the filter might be used with Bill's 100W PA, the wire size is increased to #20 gauge for winding on T68 cores. Because of the thicker wire

Character displayed in first position, character displayed in second position - etc.? Then erase and rewrite ONLY those characters that have changed. Updating the characters used in the frequency

Good Morning Registration for the 2025 annual Ozarkcon is open. Information can be found here: http://ozarkcon.com/ We would love to have you join us this year. It will take place on April 4th and 5th

Fun stuff!

Stripping functionality was just done as a test. As a solution - doing video in small chunks is just as functional as doing it all at once. And - you gotta get the basics right. THEN you add all the

Hmmm Stripping functionality out of the radio. Quite the dilemma when you will likely prefer to "do more" with your radio long-term than less... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ

I think you already know the answer... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner –

Things are a little improved. There is a call to tft.fillRect() that erases the area where the frequency is displayed. Theorizing that audio interrupts are held back while that's done, I split it up

I suspect I understand...and it's not good. I think that SPI requires precise timing, and audio interrupts are disabled during long video transfers. Yet... the audio works fine while the spectrum, the

...When tuning. The tuning of the T41 ( V12, I2C front panel, I2C encoders ) is unpleasant. As you tune around, you get tiny blips of sound, interspersed with long display updates. You basically

The latest RF boards have holes in the back, behind the PE4302 chips for easier soldering the back pad. That said, ill look into having RF boards made with the PE4302’s and the si5351 pre placed. I

Thanks Greg. I will do the bias adjustment and then remove the resistor. 73 Rocco Sent: Saturday, February 1, 2025 3:46 AM To: [email protected] Subject: Re:

Looks good, Bill! Russ

*** Yeah, I think I had to install two or three before it finally worked. Those chips - and the si5351a - really beg for pick-n-place. I think it worked after... ...I got some low temperature solder

Thanks Jerry. I now have 3 boards built with the attenuator and the spectrum doesn't move up and down on any of them. I'll try monitoring right at the attenuator with a sig gen input. It is a

Wont matter what side of the board you solder it/ plug it into… just put the connectors on the opposite side of the board and keep the board faced the same way… meaning the chip faces the BACK

For those who have not populated board yet could there be an additional version that soldered to back side of board? Would make sense for 7" display Tim

Hi Rocco, the jumper is used only for setting the bias of the IRF510 transistors. It forces the bias voltage generator circuitry to ON.? So it is only used temporarily, in the preliminary tune-up of

I put together a mock-up of the display driver. The board will look like this (that is the real ISO 7241M on the board.the board is from a previous attempt): I envision it plugging into the display

Many thanks for the comments , here and separately.? That is most helpful for me. Additional note:? I have posted stuff about the RF design, including the three plug-in networks.? It is about