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The signals are not heard on other receivers at the same operating position. So I think I can rule out QRM. They are not below the noise with an antenna connected. I've changed the ref freqs around

Thankyou for the correction Willie, It was not me, it was my kyboard :-)

Nice! Looks like a UK-only thing, but I'm sure there are US equivalents. BTW: It's Gewiss: https://www.gewiss.com/ww/en/products/product.1000002.1000088.GW44205 73, Willie N1JBJ

Hi, Yes, thank you Hans for the kind explanation. It is worth saying here that there are two separate things not correlated. At least to my understanding. 1. The issue with some QDX kits?of a few dBs

Hi Mike I really don't think those are birdies.? I take birdies to be signals generated internally by the receiver itself as a result of mixing products of internal oscillators .? Direct conversion

Looking for a suitable case for the ATU-100?. I have found that a 'Gwiss GW44205' junction box is perfect for the job. Its an IP56 specced electrical junction box that will not only take the ATU-100,

... and to answer your question, I have not tried it. But as a reminder, the excerpt from the Hans's Manual for Shack Clock kit: Probably you know that there is also a possibility to run a QLG-2 GPS

Hi Bob Getting a frequency out of an Si5351A is a relatively straightforward thing to do. There are numerous code examples to look at and libraries to use. But unfortunately if you start to want more

Bob, There are a few articles written by Hans Summers about the SI551 and the methods used to set the frequencies. They are in the files section and elsewhere on the QRPLabs site. They are required

I calmed down. I thought everything was very nice and good here. But no - there are birds to live with. These birds are typical of sdr radios. If there are already two different frequencies, the third

Wind the toroid and then cut off the excess. Dave K9SW

Gary, I do not think it is there. There are on-line calculators (toroids.inf?) Sometimes I just make one turn, measure the wire and multiply adding some for the ends. 73 Alan G4ZFQ

Seems to me "Expires" is the answer, a temporary link. I'm not sure now who posted it. 73 Alan G4ZFQ

I may have missed it, but I can't seem to find the wire length I need to wind the QCX+ toroids. The QDX assembly manual listed the number of turns for a toroid and the wire length needed for that. I

NOW I know why I have seen no emailed response to my QDX order and PayPal payment! No apologies needed Hans, even deities are allowed a day off per week! de N7TIN

I'm very confused about what frequencies can be set on the Si5351a in terms of what frequency you ask for and what frequency you actually get. I'm not concerned so much about the actual frequency as

Have you been in contact with Hans to see what repair options are available ?

So, I had some time tonight and I sat in front of the TV while spinning the dial on my 40m QCX Mini in receive mode, while connected to a dummy load, noting when I can across a birdie. Here is the

After some more probing and troubleshooting, I think IC8 may be the culprit after all. Im seeing a 12.7ohm resistance from VDD to ground and IC8 gets hot as soon as power is applied. Guess its a goner

Andy, You are bringing back some old memories for me. A 1200 baud full duplex 2-wire modem was my very first design project as a freshly minted engineer out of Ann Arbor, MI. Mark K9TR