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Thanks Ian, I will do so. I was very impressed with your step by step instructions for programming the Raduino. I had never programmed an arduino before. While it took a misstep or two, I got it done

Thanks Tim. I think I’ll try to build that circuit with the OPA172. Bob wm6h

I downloaded whatever was the newest about 2 weeks ago.

Hello Ian, What’s the meaning of this sentence “Added Si5351 module for WSPR” Thanks for sharing your efforts regards charudatt – vu2upx Sent: Sunday, March 25, 2018

Just gotta be a member to see it… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner –

http://www.ti.com/lit/ug/tidu765/tidu765.pdf

Hi Tim, I did look at the outputs on my scope and they looked like nice even sine waves. Not an absolute measurement of course. Using CEC's software I could go to 160M and look at that waveform. It

Satish, That is a good idea. At some point I'll look for a voltage booster to run the 510's at a higher voltage. Thanks, Mike

Tim: I didn't as I don't have the test gear. Next step is to get connected to my existing station antenna (carolina windom) and see how it sounds on another receiver on SSB. Certainly not a deep

Ian, I join the group in saying thank you for all the work you put into the software. I have really enjoyed using the uBitx since I loaded your software. I run Macs at home. Is there any

Tim, Did you check your signal on a spectrum analyzer? When I cranked up RV1 for maximum power output my 3rd order IMD fell pretty drastically. I'm using 13v on the PA and 12.4v on the main board.

Mike, I spent all afternoon with my spectrum analyzer, a two-tone generator, and my ubitx and came up with 10watts on 80m at 1.4amp total current draw being the cleanest signal I could get. I didn't

" Judging by others results, it doesn't look like I can get much more out of the rig as it stands without replacing finals, etc. It looks like my rig is now "normal" for the ubitx." I think there

Very cool, good job! If it was a bad solder joint in one of the lowpass filters, then only one of the 4 bands would have failed to pass a signal.? So that probably was not the problem. If all relays

The attached jpeg shows the results of testing (CW transmission) with the out of the box RV1 setting and with RV1 set for maximum output. Looks like the results are similar to what has been reported.

Still not totally satisfied (are we ever?), but I did do most of the coding with the idea that others could easily adopt it. It is all addition to the v1.27.7 BitX40 sketch by Allard Munter, PE1NWL,

Finally got around to working on the ubitx again. I traced the logic for each of the three lines (TXA,TXB, and TXC) to ensure the logic was operating as it should. They were. I then traced through

Here's Don Cantrell's description of Shuttle Tuning, using the tuning pot on the

Ashhar, I had 60db of external padding between the transmitter and the SA plus 30db padding in the SA itself. That should have been about 10 microwatts (10watt/1,000,000) of actual power feeding

Mike Because uBITX Encoder is very sensitive, I used the threshold method. It is not the same as the original firmware, although it gives a difference in the value when it is rotated slowly and when