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I belive it is working. When the I2C Scan starts it finds the audio? hat and then scans a few seconds later and come back on devices found.? Is this correct on how the I2C Scan works, finds one

I have received an offer to buy the T41 from K0ESE. I'll mark this as "Funds Pending". Thanks and 73, Frank K1FFJ

I have Dr. Bills PA and a similar (same finals) from 60dbm shop. Both on 13V same 0dB sweep from SA. I attached the 60dBm Schematic for reference. Here is Dr. Bills with 0dB in His with -10dB in,

*** Yup. That being said, the QMX+ is back on the shelf, and I'm back to playing with the T41. Despite being a kit, the QMX is essentially an appliance - from my point of view. Because it's closed

Sorry forgot the photo:

Hello everyone, I have an assembled, tested and calibrated a T41 from 4SQRP that I built as a comparison to my T41EP that I built from scratch (no kit). I wanted to see if my no kit T41 performed as

That's one thing Hans does right: He doesn't release stuff until he's convinced it's bullet-proof. He had an SSB rig at the 2018 (?) YOTA conference in Africa, so it's not like he hasn't been fooling

The schematic is attached to this comment: /g/SoftwareControlledHamRadio/message/33107

*** I guess that's why the radio has a built-in SWR bridge, and fairly fussy protection software. Since I'm operating it into my Tiny Linear, the radio is isolated from antenna SWR. Nobody hears me at

*** It's a digital PA. In the schematic, the BS170's are fed RF by LOGIC gates. I think it's what's called a "class E". They don't even have heat sinks. They output 5W without breaking a sweat. The

It is. They become extremely sensitive to load mismatches. The group is full of reports of them failing, especially when an external tuner is looking for a match. Dave

BillIs there a. Link to sch etc for this little board.?I don't have any issues with my build and a 6inch cable but then again, not checked the? higher bands.Glenn?'72 ISUZU BELLETT SPORTSent from

Did you get a chance to look at the spectrum? That seems like a lot of power for BS170s! -- 73 Greg KF5N

Testing my 20W PA with -10dB in verses? 0dB in I see very little change in gain on lower bands 160-7, some gain on 10-17 and significant (3dB) gain on 28-50 Mhz. Max 0dB in is 160-80m is 12W,?

to avoid misunderstandings: 3.3V are only on pin46 with teensy in! Teensy produce this 3.3V by himself! we have ?different rails with 3.3V!

if there is no 3.3V on Pin46, please check for short (without teensy) pin46 to ground! if there is a short you will destroy the (next) teensy if you (re)placed him!

I was just browsing their website, and I noted that Hans has finally released beta SSB software for the QMX. Downloaded it, ran it...holy crap, it works! SSB is created by doing magic with the IQ

I sent out five of those new display driver boards about a week ago and only saw posted that Terrance got his working as was able to use a 3-foot long display cable without display-T41 errors/lockups.

If no voltage on pin46 then the teensy socket or teensy itself is bad. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton,

D2 and D3 are illuminated? If so the power rails are working. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois