开云体育

Anthony, Thanks for letting us know about the spot weld cutter drill bit. Looks ideal, perhaps the easiest way to prototype a circuit. The almost solid ground plane on the top side is good enough in

Hi Erwin, Did You perhaps use a linear potentiometer instead of a logarithmic ? That can cause the effect of the volume id very sensitive at one end of the scale. Best Regards, Jonas - SM4VEY Den tors

QRPme style pads created using the bits as shown in the picture (attached incorrect picture in my previous post). I would recommend using the 3/8 inch bit to cut the pads and using the 5/16 inch to

The potentiometers provided with the case kits and maybe even for the board kits are both linear. ? For audio volume control purposes, an audio taper will provide the logarithmic progression

My FT8 system is working, thanks to Charley's help! There was a connection discrepancy in my wiring! Now I have to mount everything into a functional case. Photos later. Your mileage may vary, Jim

One more thing I should have mentioned. If you use those "Spot welding" bits and cut it through the board you can create your own 5/16 inch tiny pads in no time out of some scrap PCB. Anthony VU3JVX

Hi Alan, I have not checked my latest qrp sprat magazine is expected soon.The pcb cutters are very popular and last well.Using a small multipurpose drill at medium speed you get perfect results.The

Hi Arvo, I have something like it on a ugly build uBITx V5. It is very difficult to control the volume of Audio Out. Very sensitive at the beginning of the volume knob. Did you (or somebody else)

Qrp pops has some really great stuff on active antennas [email protected]> wrote:

Reversing the power would not make my uBITx work I think. And it is working (still ;-) -- PE3ES - F4VTQ - Erwin 73

Ian, I think they were (temporary) out of stock, MePads & MeSquares are currently listed on the club sales pdf Have you tried recently? Alan

Reminds me of:- http://qrpme.com/docs/NJ%20Pad%20Cutter.pdf Rex @ QRPme should be able to fix you up, the hyper link to the product on the web site doesn't work:- http://qrpme.com/?p=product&id=DDR

In the UK the GQRP club sell a pcb island cutter.Using a drill preferably in a drill press this tool isolates a circular island of copper from the rest of the pcb.circuits can be built using this

Thank you Jerry. You always ask the questions which matters and that's what I like about you. Because of this I never felt like asking any question on this forum while building the ubitx, people can

Regarding tools to create those circular copper islands: Searching the web for "diamond hole saw" I see lots of options. That banggood price was probably for the whole set, not just one as I had been

Thank you Dale, The layout is very easy it's exactly the same as the schematic. I will try to upload few close up picture in high resolution. I am trying to build/draw the layout with the component

Very nice, looks beautiful! Not what I would call "ugly construction"! What tool did you use to cut the circular islands of copper with? You can buy miniature hole saw bits, but they are expensive:

Erwin by any chance did you connect up the power feed unit up in reverse with power feeding to the uBITX? Skip Davis, NC9O

Bonjour F4HUY, Seems like this information is best organized on ubitx.net ( http://ubitx.net ) 73, Mark

And read this : /g/BITX20/wiki/uBITX-Mods -- PE3ES - F4VTQ - Erwin 73