Thanks Evan, I'll give it a go.
I know the original owner, my dear friend who went SK, did try to do an alignment but never could get it to work right. I'll try and let you know how it goes.
Interesting, so far you are the only person who has responded to my plea for help. Must not be many Hams around who know anything about this radio.
73, Richard AG5M
On Saturday, November 23, 2024 at 11:16:36 AM PST, Evan Hand via groups.io <elhandjr@...> wrote:
On Sat, Nov 23, 2024, at 01:00 PM, Richard AG5M wrote:
So according to what you (Evan) said, that's right. Everything is right so far, but I have weak audio.
Hi Richard,
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Yes, those readings at TP21 are good.? The problem is not with RX muting when not transmitting.
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The v6 uBiTx schematic is here:
And here for the Raduino board:
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Both are from the HFSignals web page:
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The next step that I would try is the BFO calibration using an audio spectrum analyzer like this one:
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The process is in this video:
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You do not need to complete the entire calibration process; just check the last step, the BFO final adjustment at 9:40 into the video.? If the Raduino Si5351 has problems, you cannot tune in to the plateau peak.? If this test fails, break out the scope and/or frequency counter.
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73
Evan
AC9TU
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Richard AG5M