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An AC short at the output would be less than desirable and does increase the devices power needs and heating. Better would be 10 to 50 ohm series and then short to ground.? Or turn the oscillator off

Thank you all that took time to weigh in on this topic.? I have a few dds vfo's already (probably 5 including my Qrp-Labs arduino shield)? ?What I was trying to see was there a modern

Thanks, Alan.? At least there is some evidence that it won't self-destruct when AC-shorted! 73, Steve VE3SMA

Hi All, I am looking for someone hopefully local or at least in the UK to repair my 80m QCX. I will pay for the repair. My QCX was delivered fully assembled ?and worked perfectly for a time but will

My two lightAPRS units are presently being tested on the ground for a possible pico balloon launch in June. Thanks to the excellent instructions and engineering by the lightAPRS team, I had an easy

Steve, I ran a U3S with a TX muting that simply shorted the output of the coupling capacitor to ground via a BS170. It is still working. But the consensus was that it is not a good idea. I've no real

For those who are interested; there is now an improved version of the QCX-SSB experiment, it can be found here:?https://github.com/threeme3/ QCX-SSB ( https://github.com/threeme3/QCX-SSB )? In the

http://reversebeacon.net/dxsd1/dxsd1.php?f=0&c=n4qa&t=dx The QCX-17's lpf does attenuate output on 21060 kHz a few dB...could bypass it, I reckon. 72 / 73, Bill, N4QA

I am building a general purpose LF/MF/HF/VHF/UHF "crystal calibrator" using a Progrock and a QLG1.? But I am not sure how to deal with the RF outputs from the Progrock.? I do have them AC-coupled

Thanks Bill for your reply, yes you were correct I should have fully scrutinised the manual. As my old boss used to say "if in doubt go back and read the instructions". Unforetunatley the rig no

If you haven't been to one of these conferences, put it on your Bucket List. With possibly one exception, all of the speakers are top-notch, and the list of speakers includes Hans. His talk last year

I've been doing that successfully for years. No need for even the heat-shrink. Works wonderfully. Here's more ( http://www.nd6t.com/qrp/Microswitch%20Keys )

http://www.qrparci.org/fdim

One can hope!! Jack, W8TEE

FDIM would be even better... ;-) -- John AE5X https://ae5x.blogspot.com

Anyone know if QSX might be ready by Friedrichshafen this June 21-23? <URL:http://www.hamradio-friedrichshafen.de/ham-en/> eagerly watching every day, 72/73 de Ken N9VV -- ?\_(ツ)_/?

Another idea to try: Invert your thinking. The switch doesn't have to be the stationary part. I attached one to the end of a short stick and put some heat shrink tubing around to guide the wire down

Hi Dennis, I have seen them before, there are some ex-army keys that look quite similar. I have had some good straight keys in the past including the Junker key - see photo below. The little micro

Hi Your little key is probably lighter than mine. If it works for you then great.. I found this a number of years ago, It was used by Indian rail way workers out on the line doing repairs. They would