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P.S. At the moment the only way to communicate with thw qmx is via USB. the attiny is a device like the QMX. When the possibility will be there that the AUX port is a serial bus the i can implement

Thanks, Ian. 73, Larry K3PEG [email protected]> wrote:

Many Thanks Robert, The coding and building is no problem. I build a band selector, WPM ?and Straightkey/paddle select with an Attiny and send it over the one wire serial bus to the Icom 7300. The

PART: PCM1804DB-ND MFG : TEXAS INSTRUMENTS / PCM1804DB DESC: IC ADC/AUDIO 24BIT 192K 28SSOP 5.76000 23.04 COO : JAPAN ECCN: EAR99 HTSUS: 8542.39.0030 ROHS3 COMP REACH UNAFFECTED 10-JUN-2022 73 Ian

ooks more or less like the manual. What can make it easier is to color each of the three wires using a red, green, black permanent marker to make each distinct. While small and uses fine wire its

Question to Mike, KK7ER: What is the DigiKey p/n for the PCM1804? Larry K3PEG [email protected]> wrote:

I think I have an encoder I can send you. I'll look this evening es let you know. Frank

Removing knob from encoder shaft did not resolve issue. It was already fully depressing, however it still does not work with knob completely removed. when the radio is turned on sometimes the step

Hi, Unfortunately I did not find out what part is used for the potentiometer. I was somewhat able to figure out the rotary encoder though. It might be possible to find out by contacting QRP labs

thanks Stan for the reply. I will wait for some other possible security confirmation before soldering. Alf

Thanks. I will check this out. Much appreciated Ron

That looks like what I read in the assembly manual.

Anyone stateside have one excess to your needs? Kit or built, dead or alive is fine. Let me know. TNX! Bob bobc784(at)gmail WA1EDJ

Same here, Dick. I even took the rig outside just to be sure I was not picking up something in the house. The new PCM1804 just arrived from Digikey. And my rev 1 QCX Mini taught me how to replace SMD

Yep... my IC401 seems to match your "bad" DC readings: Pin 1: 1.25V Pin 2: 1.56V Pin 3: 1.65V Pin 4: 1.88V Pin 5: 0V Pin 6: 0V Pin 7: 5.03V Pin 8: 0V Thanks for the info! Tom [email protected]>

FLDigi family software only checks the OS for available devices when launched. Devices added afterward will not be noticed. Closing and reopening the software will pick up any changed. 73; Bob

OK, Thanks for the update Andy. But is it a Windows-only problem? My QDX on my RPi needed a power cycle today. 73 Alan G4ZFQ

Hello Tom I have had the same problem here with two QMX+'s, No Audio out only a click when the Power was switched. I carried out Bill Moore's test to Isolate faults downstream of IC407 and that was

Hi, I have a doubt about the primary winding for T201 (T202 is similar). Attached is how I was thinking of winding the primary (image below in attachement), is that correct? If it is wrong, kindly

Minor update: I think I have found that the audio is stopping at the D/A converter, IC401. My vintage scope was happy to do some troubleshooting again <https://photos.app.goo.gl/hDbpMaQYhRXF3aGM9>.