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Again, the fact that the Nano has a blinking LED and the display lights up tells me that Nano is running the Blink sketch, not the Raduino code. Just get the software together, load the Raduino code

Hi Mike, So far I've got my BITX-40 to cover from 160 to 20 mtrs ... Above 20 mtrs and the performance of my BITX-40 drops right off, It does still work on 10 mtrs but the RX and TX are pretty poor,

Hi everyone. I am attaching a pdf file of a speech processor that I had used a very long time ago with my home made tx and it works very well. I had built the processor on veroboard. It is an old

To get a cw signal out of the BitX, wouldn't it do to just bypass the balanced modulator with the BFO signal? (Also disconnect the audio input.) jgaffke@...> wrote:

Group ,? I am making sockets for the band pass and low pass filters for the use of QRP LABS filter kit. can anybody tell me what bands will the Bitx40 be able to cover with changing ONLY the band

I disagree. No. From http://cd.textfiles.com/hackchron/RADIO1/HAM04.TXT ( http://cd.textfiles.com/hackchron/RADIO1/HAM04.TXT ) . A0 carrier - no modulation . A1 on-off telegraphy #1 . A2 amplitude

Hold on, wait. If that is reading 7.1500 then the difference is 50,000. And that's a lot. The last number on the display is 100 Hz. If it ends in 5, that's equal to 500 HZ. If this is the amount of

If you are getting 5 watts, then there is nothing weak about your audio. i guess we are unable to understand the exact problem... - f johnlinux77@...> wrote:

First thing to do is connect the 8 pin connectors RED wire to ground. Like the outer shield portion of the coax BNC connector is usually the safest bet. Use a clip wire if you need to. This turns on

Pardon, Jerry, but that's not quite right. A1 transmission is pure AM. It has a full carrier and both sidebands. Any signal from an "ideal" SSB rig is going to be SSB only. When one listens to the

Hello john,what if i set at 7.100mhz then as i transmit i can hear in my rx rig i`m on 7.150mhz,how will tune it to the right frequency during tx? Sent from Yahoo Mail on Android

The end of the original code section had 3 of those braces. Just taking out the first two and leaving the third, then pasting over with your code seemed to make it happy. I have seen the intro info

Q10 is the BFO oscillator and Q11 is the buffer between the oscillator and the load. The buffer interfaces the oscillator and the load so that the oscillator is not "pulled" by the load. Being a

Sounds like you are getting a new Bitx40 with the Raduino, that VFO will be plenty stable. The other issue that John mentions can be dealt with by adding a 100pf cap across L7 to suppress the second

The radio does not even need to be connected. If you have the computer and display you may hook it up to the usb port of your computer. If you have the tuning pot connected it should work stand alone.

Thanks for trying out my flutter fix! The snippet with my new code in your last post is correct. ?Note that all "{" have a matching "}" further down in the code. ?But your code snippet showing the

There are really two required minimum hacks for the BITX40. 1) You must stabilize the VFO. It drifts too much for comfort. The best fixes mean replacing the VFO caps with CoG or NPO units and

As Jerry says, there is a considerable difference in gate capacitance, which means a very different input impedance. You can use the IRF520. Lots of people do because of the much greater power

As I remember the older phone cords were resistive. Check the end to end resistance with a multimeter. Raj

Likely dead in the water due to too much gate capacitance for use at 7mhz.