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Hi there First off, I am a complete novice so I'm flying blind here. After a successful build, my Bit X 40 was producing about 7 watts PEP. It's now producing less than a watt (my meter doesn't go any

It is strange that the voltage doesn't reach 0V and 5V. Perhaps a poor quality potentiometer? If the slider voltage doesn't reach the upper and lower limits the software will never start scrolling up

I wonder if anyone can help me with this problem.? My recently completed bitx-40 will tune only from 7.075 to 7.109 and does not scroll up or down at the ends of the pot movement.? I have tried

I suspect it is the front end filter characteristics. Disconnect L3 and feed the antenna to C6 C7 junction and see if the volume across the band is even.. Raj

It is hard to believe that the volume increase could have anything to do with the software. The software only controls the VFO frequency, not the volume of the audio amplifier nor anything in the RF

Thanks Gary for confirming. Glad that this nasty bug is definitely fixed now. 73 Allard PE1NWL

Hi Guy, No, I don't think the longer leads have any effect.? On the topic of output, I've been able to do more measurements today and have graphed it as usual. I'll let the graph do the talking: When

I think it will, its a twin T oscillator amplified by LM386! Raj

Does this oscillator provide proper sine wave tone? -- Pedja YT9TP

Thanks for the pics Ryan. Do the longer leads have much effect on the 510’s characteristics? 73, Guy N7BIR

Gene, I also noticed about the volume increasing, for me it’s between 7.190 and 7.220. Kind of annoying. Never tested my BITX with a frequency counter before but now maybe I will. wrote:

Almost on the air with first HF unit.? Love the BitX40!? However, this is my first build so a few questions remain (forgive my ignorance): 1) Is there a way to verify that the transmit freq is on

Methinks you nailed it Allard; ???? I've tested your 1.27.2 release, and it no longer has the QSK DELAY bug. I've also been able to confidently test it and made a couple more

Allard, That is likely. New to the Arduino IDE, was poking around to get the feel. Thanks, Gene N2IJF ________________________________ Sent: Friday, November 17, 2017 5:01 AM To: [email protected]

Straight key, paddles, or capacitive key with a bit of extra work. John

Roger that. Can you use a paddle with Allards mod or only a straight key? [email protected]> wrote:

Hi, I've just released raduino v1.27.2, download it from https://github.com/amunters/bitx40 In this release 1.27.2: - fixed a bug that with shorter QSK DELAY times, the radio did not return from CW to

OK Gary, think I found it! After some experimentation I could also reproduce the behaviour you described. I found that the error occurs when the QSK DELAY is less than the length of a CW element. In

You should certainly build it. If nothing else, it should make a fine code practice oscillator. And would likely work ok for sending CW out the Bitx40 if you hook it up to the microphone input and

Yes!? I have an improved version with lots of extras. So called RaduinoX. Bare PCB or complete and tested. Ask the dozen or so folks who bought them. For those wanting a Raduino board. There is a