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Once again Iz, that is the point. You know.... and I know, how to recognize receiver overload and what to do about it. "does not overload easily" is subjective..... but when I have one rig out of

Warren, regarding '''The front-end diode mixer followed by a Hayward/Kopski TIA makes this a crisp receiver that doesn’t overload easily." Simply untrue. Using this receiver 3 miles away from a 1450

Thanks for the book. Chapter 2 is very important. If you want to use the chassis you need to be sure you insulate the tabs from the chassis.

All, as I have problems to upload the pdf files into Groups io I send them directly to the Group as an attachment. So let?s hope they will come throug! Henning DK5LV -----Ursprüngliche

Hi! First i want thank you for your fast answer :-) Ok i have a new question about this.. In the Wire Up Shematic v1.9 i read this: *1. "the Ubitx board should be grounded in a metal case* or a common

Gordon you have missed my point by focusing on what you call "disparagement". My "disparagement" is an attempt to inform those who expect to take the radio out of the box, connect it up and operate

Hi Glenn, I have not been following 100% the group. Is n RX Level Diagram available? Thanks and 73 Gian I7SWX

I simply disagree. It’s all in how you look at it. All of us have problems, you can look at people and equipment as either half full or half empty. Disparaging either has a bad effect. Apparently

Hi, So I can test my uBITX for harmonics and such, I built a "QRP+" dummy load, this weekend, with a 46 DBm attenuator on board. By mounting this to a bigger heatsink or adding fans this should be

Gordon My characterization of the uBitx as "garbage" is a term of art, not science. However, when a commercial radio is advertised as "Build the ?BITX transceiver in an evening. A general coverage,

Joe, Warren published some pretty good numbers way back, and Allyson probably did also, and basically CW mode was in trouble on all the bands. Single side band not quite so much as long as you

Hi Joe Your question illustrates the reason for my stone soup admonition. There is no valid answer to your question without additional parameters being set that require precise measurement and

Hi, My regards to the chef, on the Stone soup. :-) I have no fancy test equipment, but I have a working uBitx v4 board. I've read thru all the links and emails on the current problems with the Ubitx's

I heavily modified the uBITX code to work with an Arduino and QRP Labs si5351 board, which was the easy part: The hard part was ripping out all the extra IF stuff and calibration! I'm not cut out for

Perfect. I indeed had it connected the wrong way. Due to my case, I had to flip the connector to the other side of the raduino board. And that means the pinout is mirrored. Works now. Thanks!

Well, I dono ...Rigs like the uBitx are WHY I got my SA (s) and Tracking Generator ...I like to see whats happening under the hood (and why) Jim n Monday, September 3, 2018, 6:42:09 PM PDT, Kees T

Ok?? I did replace the electrolytics as can be seen from the picture ..It is effectively a center tap? I wanted tighter coupleing between the two windings ....The reason why you feed from the

First issue...you have the LCD upside down. The connectors are at the top edge of these displays. The blocks you can see are the top line. Check the CONTRAST potentiometer to insure that it can vary

Hi all, This to me is the mos important. I have learnt SO much in the last 12 months from the uBitx. More than my FT-450D could ever have thought me. You know, and I'll make a board the fits on top of

I' had the same. After frequency correction made BFO, after this steps the side bands has come to the right position: LSB on 40ty and USB on 20ty My correction for frequency: 18, BFO-11996380. George