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Hi @all, is a higher output the only effect? 73's DL6MEE

I think I found the problem. I disconnected the T401 transformer input from pin 9 IC402. Then I connected the input of transformer T401 to RX_IN through a capacitor. The receiver is working. Probably

tnx for the info. But a factory reset and a downgrade to 025 (and an upgrade to 026) did not solve the problem. 73 Bernd

Hi Hans, I think it is great that you are sharing your results with me.? I have stolen the Teensy 3.2 from my radio.? They are no longer available since the parts shortages of a few years ago.? The

Do you miss playing in the NHL, Mats?

Prior to changing parts, I'd do a factory reset and see if the situation changes. 73 Dick W4PID

Ron, thank you your replies. I'll have a try with your suggestions but waiting on a smaller soldering iron. Most of my soldering experience is with vintage radios with point-to-point wiring. 73 - Dan

Hans, The SSB progress is very exciting! And the floating point capability of the processor is a big deal. Software developers at my past job absolutely loved it for its elimination of burdensome and

P.S. I forgot another thing I was going to mention. The two tone transmission is analogous to transmission of zero in a BPSK (Binary Phase Shift Keying) system such as PSK31. In PSK31 a zero is

Hello Ron That would explain why your previously presented traces earlier in this topic have constant frequency (no 180-degree jump at the zero-amplitude transitions). Assuming you are using 4800

RX band switching is accomplished with the microcontroller and IC402. However, as others have noted, the issue is probably assembly-related. Check C401 and C403. Is this a pre-built unit or a kit?

Hi, I got recommended not to use Reichelts BS170 on an other project. Buy from DigiKey, Mouser or RS //Mats - SM0FPR

Well done finding that fault! 73 Steve G4EDG

Is this a correct replacement (BS170)? https://www.reichelt.de/mosfet-n-kanal-60-v-0-5-a-rds-on-5-0-ohm-to-92-bs-170-p5856.html 73 Bernd

How is the range switching bands? On what chip?

Hi, I got an OM-build QMX (9V). CW and FT8 (abt. 45 min.) works ufb. Next day there is no tx-output. Using diagnostics shows 0 W power. What could be the reason? Do I have to change the BS170s? I

A little? ? Soon enough we'll never have to dirty our hands with the strenuous and tedious acts of creativity, art, free-thought ..... Surrender to the Borg.

OK, the finished mystery! Using the DVM and checking continuity along the receive path it didn't take long to find the primary winding on T1 to not be soldered properly. They unit worked before but

The company name is Intellitron but they are NOT made in Mississippi anymore. Made overseas now. [email protected]> wrote:

It was rebranded and is selling under a different name. I saw them from a friends video at the Huntsville hamfest. I'm sorry, I can't remember the name, but I'll try to look at the stream again.