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i have got the instructions for windows from pat griffin but i prefer to use linux. i have got win 7 but i do not like connecting windows to the internet cos of the wiced nasties. has anybody got

Mike, I put my first board through the analyser and found the IF filter around 1.8-2K as I remember. If you adjust the BFO in one direction the audio will sound sharper but less bassy and vice-versa.

after a bit of research i discovered that the usb mini comes in two flavours a and b, the bitx40 uses the b flavour. i eventually found one and it worked !! maybe i should have know !!! terry

Soundar, these are two different things: * CAL wire, connected to pin A2 (red wire) * Function Button, connected to pin A3 (orange wire) The red CAL wire was used for calibration only (for basic

from source code: # define FBUTTON (A3)

Mike, Peter Parker VK3YE tackled this issue by reducing C102 to increase the BFO frequency. He made a useful video about it here: https://www.youtube.com/watch?v=IELJwapv5qs (

Hi Mike, The muffled audio is more likely due to the crystal filter passband rather than the mic amp. I've noticed this on another station myself. Moving the 12 MHz oscillator (BFO) up in frequency

I have 2 BitX40s one on 40 meters and the other is converted to 80 meters. I talk often with a group of amateurs on 80 meters mostly using a TS830s so they have a clear idea of my audio. When I use

There is a confusion in instruction page. Line number 15 function button red wire line number 66 function button orange wire. Please clarify how t.o connect function button it is A2 or A3 Red or

Thank you!

Instead of "Scan range", I meant Tuning Range.

I have a mobile radio built that I do not intend to add a function button to. It is a radio that I want to keep simple and I don't want the user to be able to switch to USB or CW by mistake.? I would

Just released raduino_v1.13 which includes the frequency scanning functionality as suggested by KC8WBK. Many thanks Paul for this great idea! Download it from https://github.com/amunters/bitx40 (

Just released raduino_v1.13 which includes the frequency scanning functionality as suggested by Paul KC8WBK. Download it from https://github.com/amunters/bitx40 ( https://github.com/amunters/bitx40 )

The unit receives. So the tuning unit is working. Can you adjust tuning and get variation in frequency? I suspect so since you say that both SSB and CW are working. Does the background light up? Does

http://www.ebay.com/itm/Nano-V3-0-Mini-USB-ATmega328-5V-16M-Micro-controller-Board-CH340G-Arduino-Cable-/162002876661?hash=item25b81fb8f5:g:RYYAAOSw5cNYfJ0j (

CH340/CH341 is no problem on OSX just download the right driver and install it ! problem with a USB-Cable is also easy fixed....buy a cheap Nano incl. cable from China

Try this: https://drive.google.com/file/d/0B8v7bRFPZV71VGpvODhrRnZHUUE/view?usp=sharing ( https://drive.google.com/file/d/0B8v7bRFPZV71VGpvODhrRnZHUUE/view?usp=sharing ) I used a $5 USD Baofeng

The extra SMD cap could be for C107 (0.1 uf) which was found to be missing from some boards that were shipped.

*it's true, some Nano clones have quality problems especially missing bootloaders or bad soldering, but looking on the price difference, less than 2€ including shipment from china against about