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Ok. I feel like I'm being pulled in different ways....told one thing, told something different. Told to check one thing...then told it won't help. I guess that's the nature of forums, but I will ship

The supplied jack assumes that you will have a? 3.5MM stereo plug for the mike/PTT connections.? Use??shielded wire for the mike connections that has two wires in the shield.??If you are using

Unless you have 12Mhz verified it will not give you any assurance that the basic signals are available. And I did not see anything discussing this in the video. As you hear the approx. 5mhz signal.

But Q70 gets powered up on RX, and Q6 gets powered up on TX. That power switching is really disruptive. Might leave them both powered up, then the DC bias resistor should work fine, if you somehow

Not meant to be rude, but it is what it is. And yes a separate cw signal injected instead of a software generated cw keying solution would have been better. The Arduino is not that powerful to handle

I know you said you wanted to ship it to Gordon, but just for future reference: DC (or AC) measurements are fine as long as you don’t deal with RF - that’s where a really simple RF Probe is a good

Hi All, I have done over 6 projects with Arduino/I2C adapter/1602 display. I remove the I2C pullups from the ebay PCF8574 I2C adapter assembly, and let the pullups to 3.3v (located somewhere else,

Not very helpful....But tks anyway...

it’s a 100$ radio, think some limitations are to be expected. Verzonden: 21 December, 2017 18:39 Aan: [email protected] Onderwerp: [BITX20] Cw only I work only CW and reading what U guy's are saying,

I think I misunderstood the video and should try it tonight? I noticed last night the speaker hiss now appears to have a crackle in it and has a whine. That wasn't present before the pop, flash and

PCF8575 happily works from 2.5-5.5 volts so it can co-exist with the Si5351 at 3.3 without issue. Vince.

?John -- there are two capacitors in series at that point in the receiver --- are you talking about using a resistor to keep the center point at ground? I'm interested to see if this will work,

I am new to the group having just purchased the ubitx.Since this is a bitx20 group it seems hard for me to decide if commentsare for bit20 bit40 ubitx or whatever else radio is discussed. Could ubitx

?I might add that the "prodding video" is actually FUNCTION TESTING, stage by stage, and the fact that they let you see and hear what to expect is TREMENDOUSLY HELPFUL. Further, I haven't looked to

I work only CW and reading what U guy's are saying, this may not be the rig for me. A good internal keyer is a must and with only one IF BW, this would not serve me well. I could add a good keyer

Ok thanks. Sending it off tomorrow ha Thanks to everyone on this. Hopefully I learn something from this and can eventually do it on my own.

Jack's idea is good, we need more pins (if not for a keyer, then for something else) and driving the display from the same i2c pins as the Si5351 is using should work great. Except that the Si5351 is

?OK.....I would caution that the parts are IN A CIRCUIT. So things are more complicated than when they are out, unconnected to anything else. Most of the rig is common emitter amplifiers, which are

On looking at the schematic... I think the solution might be simpler: use a high-value resistor to keep the DC level of the capacitor at the output of Q70 at ground. I saw this referred to a while

First start with the transistors around the 12Mhz Christal. Q10 and 11 think it was. Black to ground and red cable to every components leg. C and R components less important initially. Focus first on