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Hi, I just wrote a small Linux program that can be used to conveniently pass audio from the QDX to another sound card, automatically adjusting the volume as needed (it doesn't set the gain via the CAT

This was hard for me to print, so, I can't offer them. In removing the supports I destroyed half of the knobs. Perhaps someone here with more 3D printing experience can print them at a cost. Perhaps a

what about this kit? https://www.budgetronics.eu/en/building-kits/ascii-vt100-video-terminal-building-kit-original-version/a-25776-20

A minor update to my breadboarding a RP2040-Zero with Mike's G8GYW Power/SWR Meter. I added a couple of 5k trim pots through individual 330 Ohm resistors to the 3.3V pin of the module. The wipers were

Hi BrianB Not round here, it isn't! 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl

Where can I get some of these?

Dean, "abnormal lateral mechanical stress"? OMG, what a disaster! It sounds to me that I have to throw the QCX away after an afternoon of use. Think positive! It is a damn good idea! And if I have to

A VT220 is easy to find. Now a VT-100 is another story. BrianB N6CVO Ex DEC FS Engineer (7AR/7KE)

Can't find the links.

Finding a time machine To find an VT220 Is easier :( 73 muhsin TA1MHS

Graham, Re the $15 ebay tuner.... I just posted two links that cover the needed mods. Kind of shocking that the original schematic had not one but two critical mistakes that guarantee it works badly I

> > Steve Fabricant wrote: > > https://www.youtube.com/watch?v=JceLhTV28oI > > https://digitalshack.org/qrp-1-30mhz-antenna-tuner/

Tnx Don, Yes, with class C it is a bit tricky.? So, those 500mW were some 7 dB to short on the input... I have just made measurements with the QDX tune signal of a proper input power (about 2W) to

S-parameter measurements on a class C amp are misleading to meaningless since the gain is dependent upon the power level of the stimulus signal. 73, Don N2VGU

I built this little tuner a number of months ago using the instructions I found on the internet but have never tried it out yet. I thank you all for the tips on the mods and it looks like I'll have to

Nice, thanks for keeping us updated on your progress! 73, Willie N1JBJ

Thanks for the reminder, wanted to order one for my golf cart: https://www.amazon.com/s?k=steering+wheel+knobs 73, Willie N1JBJ

Hi, I am, using the QRP Labs 50W C class amplifier with QDX transceiver.? It is doing a good job.? When I measured the S21 parameter I have noticed quite a difference in gain.? The slope is from 16

A photo of the early stage of breadboarding a RP2040-Zero (Waveshare) loaded with?Kholia's V2 version of Mike's SWR/Power Meter software: The OLED display is from a ATU-100 kit I have; the circuit

In the auto industry, they called them suicide knobs because: Knob would leave an "impression" on the driver's chest in an accident Knob would catch on something (clothes or such) and steer you into