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Morning Dave. Thanks for the information on the mouse details,im at a loose end today so will delve into my junk box as i now ive an old wired mouse there.Soory to hear about your wife,our 30 year old

IMHO, THE NAT54S ARE INTERALLY matched. As a strip, same batch the second bat54s also has similar characteristics. Can we get such balance with 4 discrete diodes, it is a long exercise to match etc

I am using the mouse as a (ceramic) microphone for my Drake (the capsule fits perfectly in the place of the ball). Indeed I could use the two now unused buttons for a cw key as you have done hihi :)

I'm building my uBitX v5 and have a couple of questions about power supply voltage. ? First, what are the minimum and maximum supply voltages that the uBitX is happy with? ?I may be powering the

Dave Nice to see this idea revived as I know I saw it decades ago for portable operation. Not everyone is doing 20 or 30 wpm and that is okay. A bunch of us also do mechanical keying in straight key

Hi Tim I have a v5, am happy to test. Send me the file to print and I'll take some photos. Cheers Ben

I like this. Reminds me of an old Star Trek movie where a crew member from the future was trying to use a mouse. Tom, wb6b

It is more sensitive bc of the different transistors it's using .

Yes, you are right about the mixer on CLK #2, and the CLK #2 frequency needing to be set to the TX frequency (as in the CW mode) for an unbalance there to generate a carrier. Thanks for the

(*chuckle*) This is the coolest thing I've seen all day! I'll admit I use a capacitive Touch Keyer with two horizontal paddles that I alternately touch with my index and ring finger to send.? That's

Adding discrete diodes and a pot for the modulator to better suppress the carrier has been discussed here. I haven't heard of anybody who has done this and decided it was worth the trouble. Being an

Hi, In theory shouldn't the mixer attached to CLK #0 be balanced and suppress the carrier? In that case the filters only need to suppress the unwanted sideband, not the carrier. The matched mixer

Also check your local Junior College/Universities EE or physics departments. Even some high schools have SA these days. Phone companies and cable TV companies may also have equipment. Jack, W8TEE

Ben, The board should work on a V5 Board. Where we tap for attenuation of loud signals, and where we draw our bias to adjust signal level from is still equivalent between V4 and V5. The only thing

Curt Indeed agreed. My V4 is only marginally out of spec on 20m using CW tests. The V5 seemed OK on all bands on CW but at the moment is picking up a lot more broadcast signals off the same antenna.

Michael I anticipate that a reliable cure for spurious will emerge soon for v3 and v4, and may apply for v5. Its understood that most of us don't possess a spectrum analyzer. My local club is building

...and don't forget to remove the microSD card after you've loaded the new firmware like I did, otherwise it won't work :)73 de Mike

Mike Where are you located. I am sure there is a school in the area or a ham club that could help with test gear. Any Spectrum Analyser test tool. Even an sdr with a down converter and proper

To Peter, hi Peter i received the inductors, thanks a lot. 73 Uwe DF1UB

https://youtu.be/hhQkF18Vpho This video demonstrates the process step by step. I had to pause the video and look closely to see where to connect the wires.