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I use their I2C LCD backpack boards and their SI5351 board (which can be fed either 5V or 3.3V).? They have kits of machined header pins and sockets, and rotary encoders, as well.? And the little

Thanks for the info. My typo, I used a pair of .22 pF for .44pF (closes I could get). Your right is doesn't work too well, although I could hear a a QSO around 7.3 MHz. Thanks again, Daniel KB3MUN

Is that Lucite?? and how thick?? 1/8 inch? thanks, Paul K0ZYV To: [email protected] Sent: Saturday, December 30, 2017 3:33 PM Subject: [BITX20] Laser cut ubitx case SVG Hi All, If any of you have

470pf? in an NPO or C0G or silver mica would be ideal. Voltages there are quite low, less than 5v, so most any voltage rating. That would give you 0.44uF, which is 440000pF.? Not good, I'd be

2 x 0.22uF in parallel gives 0.44uF. Much, much, much? bigger value than 470pF.

I need part specification for BITX40 capacitor C7. I know it is a 470 pF. Is it an NPO? what voltage rating? This week past, I put together my BITX40. Observing very weak audio signal, I was following

Hi John, Used tone on 7.023 into a dummy load only because I had a Pixie2 at that freq that I could listen for my output. Voice I tried several frequencies. The issue did not vary much with freq.

Jerry, Great, thanks, will give it a try. Sounds simple and will be a good way to check my cheap CB watt meter. Gene N2IJF ________________________________ Sent: Saturday, December 30, 2017 9:46 PM

Nice design. Perhaps we can manage spot welding 4 nuts behind the lcd and thus prevent the 4 mounting holes. Kindly think of such possibility. best of NEW Year 2018 regards Sarma

Jerry and Andy the filter implemented by Andy looks performing nice. Can als o try similar with the design of Eamon Skelton EI9GQ please. HE GAVE A GOOD GRAPH OF HIS ROOFING FILTER.. One of my

Gene, What frequency did you test on, and did you try other frequencies? It turns out my Bitx40 shows different output levels depending on the frequency across the 40m band, maybe your board has the

Yes, you can use it without the Nano. Assume the transmitter is driving the 50 ohm dummy load with a 20 volt peak to peak sine wave. Since the other end of the 50 ohm dummy load is grounded, the 20

FYI, The Ubitx does fit into the Excellway case but it is a bit tight. I managed to get a hole cut into the front panel that just fits the display and leaving room to the left for the vertical screw

I don't know what specific parts W7ZOI used.? There's very little power flowing through this filter, though, so it should be easy duty for the components. I used these:

oK, first success on ALE with a uBitx --- KM4ALP is one of their monitoring stations, and bingo, when I transmit (10 W out roughly) on 80 meters,, he picks it up! I show up on their map with a link to

Hi Jerry, Sorry for the delay (holidays you know). I do have a number of the 100N50 resistors and find that they work great. Yes, I saw the notes from Jack but I am unclear about the operation.

All Electronics has RG-174, about $0.30 A foot.? I always throw in 10' and shink sleeve when I order there! Shipping always seem to be $5 - 8 (on big box).? Free if $75. They also have BNC to

A new net devoted to Makers (DIYers, homebuilders) has started up on Echolink conference node 9229 (*TECHLINK*).? All those interested in building their own “stuff” are invited.? The net is on

Well 160 will easily be covered but 630M is a much larger task. The efficiency of a wire that is less than 0.2 wave lengths (close to 400 feet!) on that frequency with a tuner is extremely low (most

Got around to assembling my uBitx today. The case was laser cut on my Glowforge out of 1/8" MDF. I based the design on what Martin Held, AE7EU did. The case with my radio has larger holes for the