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Hello Phil You can see my 6 band bitx mod version at : http://py2ohh.w2c.com.br/trx/baitatche/baitatche.html ( http://py2ohh.w2c.com.br/trx/baitatche/baitatche.html ) and details for the filters

Any chance of sharing the details of the 9 band version, I personally would be pleased just to get another band or two, but if 9 bands is a do-able project that would be interesting. Great to see the

Any audio amp could be tried but it should be generally available in spares market. Perhaps for a design, better to use dip8 or soic8. This is NOT a reply for Ashhar Farhan's design. M1 and M2 are

"the image of first LO+IF will float from 90 to 120 mhz. This is bang inside thr FM broadcast band." Not only that, but it could possibly interfere with the aviation communication band. That is a

Well Randy, I completely mis-read the numbers on my Bitx40 PCBoard. The HANDWRITTEN numbers on the board are: F3-1942 So sorry about that misleading listing, and excuse my liddy reading here. So I

A couple possible solutions if this does look like trouble: ?Include a scheme to add shielding at the front end for those that need it. ?Or go to a higher freq using the muRata PX1002 86.85mhz SAW

Gang, I received an email about the ubitx from wes. He points out that the image of first LO+IF will float from 90 to 120 mhz. This is bang inside thr FM broadcast band. It could lead to some

Allard and the gang, I have been Terribly busy with the Lamakaan anniversary going on. I have your code, but to quote knuth 'i have only proved the code to be workint, not tried it'. Give me a few

I did not notice anything on 7.4 but I'll check again on Tuesday when I am back in town. Try getting a neighborhood ham to listen in an see what he reports on 7.4.

Sorry forgot to restart system after installing the usb driver into the system.

Hi All; ? ? Just to let you know the Arduino IDE does work with the Bitx40 on a Macintosh. I found out the usb drivers in that system/library/extensions/usb.kext ?does not include the one

Hi! You just snatched the words from my mouth, it will be great in true experimeter's spirit... 73 Rahul VU3WJM

This is very nice for a final product but for experimenting wouldn't be better to have small blocks we can interconnect. From what I see we are working with 50 Ohms input and output impedance so short

Hi! Great looking PCB. Single sided board will go a long way in making it popular and easy to assemble. I guess the PCB is being done in Sprint layout, how about posting the .Lay file so that we all

For a volume control you usually want a log or audio taper pot. Since hearing is logarithmic, using a linear taper pot will put all the volume change compressed at one end of the pot. It is possible

Thanks Mike Will follow it through Regards Steve

What a beautiful and compact build... 73 dsc3507@...> wrote:

9 bands HF QRP transceiver, based on the famous Bitx design but with much modifications. dsc3507@...> wrote:

Would be nice to share i with the group on PDF Regards HAGWE Lawrence cubanqrp@...> wrote:

Logarithmic