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My sbitx basic kit arrived today and works perfectly (sbitx #77 is on the air as I type). I'm keeping it under 10w for now until I replace the voltage regulator, but so far so good. The linux admin in

I believe it was an ARRL award, but it was long enough ago that it was probably one of the first FT8 WAS awards. Did the rules change? (I don't follow those things.) Jack, W8TEE

Thanks Ashhar. Any suggestion of a link where to buy it? Where is it located in the main sbitx board? Btw, this radio is a dream! I really like the way you used the 2 LR channels of the audio codec!

I agree with all of you. I personally practice listening to 30 and 35 wpm practice sessions so its easier to copy 25 wpm qsos. But i never try to transmit faster than i copy.I find he hasnt been

any chance of finding the file for a 5 inch display for? CDC load? vince n2aie

Thanks,.. looking forward to receiving my kit. vince n2aie

I'd be more concerned than impressed - that seems way too high, given the components used. Ken, N2VIP

Rafael, I would suggest installing a switching regulator before you pump up to such high levels. The transistors need to run cool.

Max, Keven Loughin, KB9RLW, did a Youtube video, "Ham Radio - The doublet vs EFHW noise rejection cmparison." where he shows the effects his and his neighbors inverters have on reception. He lives in

Frankly I believe that one should never send CW faster than they can copy. I don't know what he intends to do if the decoder malfunctions or his computer freezes up. Or try to copy the other station

I do not see a problem. As long as we are gentle when winding the coils and add shielding per Ashhar’s instructions for the filters, we can just use minimal ‘fill’ for a nearly hollow PLA toroid

Hi everybody, Got impressed that the wattmeter showed peaks of 66W on CW on 40m band! Yay! That is correct, right? Thanks, Rafael

Farhan No progress today. I guess I will wait for the upgrade kit. I have built and fixed several Ubitx rigs but this issue has me stumped. Anyway once it get it going again I will enjoy this one as

Steve, You might want to telnet to port 7000 of the rpi while sbitx is running. This an easter egg yet, I am not sure if I should produce a telnet remote or a web/http based remote facility. It only

To track down the hum and spurs, I had a trick. I use a spectrum analyzer with its input connected to the DC power line through a 0.1uf capacitor. The important thing is that the RF cable between the

Scott, I think you're probably good to go at this point. Extra bypass filtering on the output never hurts. In the olden days of HAM radio, 60/50Hz hum was the big problem with power HV power supplies.

David, I did a bit of experimental work on this. The toroids need more than 15 turns or so for the self-shielding to work well. At fewer turns, the shielding though better than that of a conventional

Mark, Shipping is included in the price

If that RV had a solar panel on top, that could also be the source of the noise. Solar charge controllers are kinda like a variable switching power supply. Mine? causes interference all the way to 60

Thanks Steve!