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I searched for this problem to no avail. So I am posting in case someone has an answer. I bought a new uBitX, and installed it in the case from Amateurradiokits.in. Upon powering up the display shows:

Thanks Jerry!

Those messing with 45mhz filters might want to revisit the code of post:? ?/g/BITX20/message/44278 That post provides an easy an intuitive way to put your USB or LSB signal into a

On Sep 8, 2018 1:30 PM, "Gordon Gibby" <ggibby@...> wrote: Unfortunately in the uBitx design all three clocks are feeding impedance is a good bit lower than the maximum one suggested. These

Unfortunately in the uBitx design all three clocks are feeding impedance is a good bit lower than the maximum one suggested. These outputs are CMOS outputs, are they not? So they have active device up

Warren, That IMD could be in the IF amps (Too much gain for 2n3904's at 45mhz?? Mixer overload?) or in the power amp.? If IMD gets worse when RV1 is cranked up, that would suggest it's in the PA. If

Sorry: +/- 7.5 kHz 3 dB

Hi all, good job.? 1.The output? of 45-2pole in C22 position needs transformer 50/600 and small C <10 pF- it will have close to flat responce. 2.As I wrote befor as main filter I used SMD: DSF753SDF

All three relays are de-energized during received, so contacts are as shown in the uBitx schematic with a path through the 10m filter. At the start of transmit, the following routine gets called (file

Just a question, and I apologize if it's been covered before. Could someone tell me the LPF relay sequencing for the existing ubitx configuration? What relays are energized for what frequency ranges?

More data...... Comparison of CW power out with SSB power out using the added 45 MHz filter: The chart was made by adjusting RV1 to maximum key down CW power, and then keying PTT with an input tone at

Allison Thanks. You may have just saved me from overloading some of a recent purchase of Si5351a devices. I too was under the impression that 50 ohms meant 50 ohms, instead of " *use a 50 ohm line and

Indeed THIS ....Explains why I'm seeing 0.6 volts (p-p) at R103? on the 45 Mhz mixer thingie Jim

Allison, I'm afraid if you tested the way you described in your original post on this thread, you weren't testing for crosstalk.? I believe what you measured wasn't cross-talk at all, but rather

Hi; The paragraph description on modifying the Beofeng mic connections to the uBITX is vague. Can a schematic please posted a schematic diagram as to how the mods actually are done. 'Thank you '73

Great data Warren. Are you also going to replace the other 45MHz filter with the matching one you received ? Sure shows what all working together can accomplish........ Good Soup for everyone.? 73

Raj, Doesn't leaving R27 in place give you better impedance matching ? Did you try cutting the trace in between and just putting the filter between C22 and R27 ? 73 Kees K5BCQ

Sorry Bill.? I didn't mention that I do set it with the PTT switch, then exit the setup mode.? This set has exhibited this symptom since day 1.? I thought changing out the Arduino would have

Hi Bob, I do not see the part where you save the setting after you have set it. Press the push to talk button to save it while you are still in the calibration mode. Otherwise it does exactly as you

When the set is first powered on, there is a tinny, high frequency audio.? When you enter the setup mode and enter calibration, pressing the menu button, the audio is normal tone. Then I adjust the