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Mike You will know best.? Certainly the objective was to keep dimensions the same. I trust this was achieved. Curt

Group, I just got a V5 in the mail today in hopes of just removing the V4 from its box and swapping the main board and the Arduino and display. Is that possible? Thanks Mike WA3O

Jim, Run the test for power out at 28.4mhz? but sweep from 12 to 30mhz.? Above 20mhz harmonics are less an issue than spurs below 30mhz.? One of the big issues was at 10M there would be a strong

So, to give some feedback. I do not have any positive results yet. The controller is built and finished, but I am not able to control neither my IC-725 nor the uBitx with it. Nevertheless I am not

Tim, Yes, I know they don't. I ran the tests for the second time to make sure I got the test settings as close to right as possible. I didn't expect any seriously different results. I also

Jim, These graphs don't show much more than the earlier ones. 2nd harmonic on 80m and 3rd harmonic on 40m/20m need to be investigated. A low pass filter for each band could fix these but it would be

Today i receive new Si5351 and output signal on CLK2 is 1Vpp. The old Si5351 is not working properly. Miroslav? OM6VM

Hi Jim Have you run these tests on any other radios yet. Say your k3? Something that is supposed to be top notch. Sounds like a neat tool. Dave

I wasn't totally happy with the screen captures I got yesterday when I posted the initial spectrum test with the new SSA 3021x spectrum analyzer so I re-ran them this morning and paid a lot more

OK then, assembly and testing at the bench before it goes in the case! wrote:

Not a problem, Jim. When I get mine I'll do the test. For spurs you shouldn't need a two-tone generator, just a simple audio oscillator. You might want to make sure you aren't seeing some kind of

Harvey I am not familiar with what these voltages should be, but a factor of 10 in voltage doesn't readily sound excessive. I honestly would consider whether your microphone is giving enough drive, or

What frequency is the signal going INTO the 45MHz filter? -a

Assemble it and test it to make sure it works. Are you going to do the amunter mods to add CW, etc? If so, just assemble it and make the mods one at a time and test. When you have a fully functional

I'm troubleshooting low SSB output, about 2 watts, from my V4 uBITX. In making measurements I find I have a 400mv SSB signal going into the 45MHz filter, Y1, but only 40mv coming out of the filter at

Didn't mean to confuse anyone, Thought I'd talked about the new layout making for improvements?? But made a mistake mentioning yours as a V4 when it's a V5 so sorry about that.? Regardless, all my

Jim, I have used the following tone generator on my PC with a simple jumper cable made from a PC headphone jack and the standard Tip Ring Sleeve that us used in the uBitx.? I also added a slide

The way you stated it though might have confused newbies. You need to make certain they know WHY you are posting V3/V4 info in relation to V5, not just post your measurements. If you don't you might

Andy, Well, that's over my head. I did get some PCB's from a Chinese firm using these files, but as I've not built it up yet, I have no idea whether or not it's done right. I have no problems reading

Once again, Yes Jim I understand that.? I thought you/we/someone might be interested in seeing the improvements in the new version. Anyway, your tests are fun to see.? Thanks for all your efforts!?