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Folks, This is my experiment. I just used a NE602 and a few passive components. Use Google translation to read this: https://mp.weixin./s/-Es5XWPcKTXxAZ8qdjIk4g Thanks, Adam

Hi Adam, You are send my tx qrp for 20m ? 73 de laurent on2vhf

Hi all, Nice info, mike qrp 73 de laurent on2vhf

Folks, D4D was introduced by BG2KAJ, the ex-editor for CQ Communication Today magazine in China, equivalent to CQ or QST in USA. The introduction attracted many domestic hams. He wrote, no matter it

Folks, Just updated the 4th shipment. Now I have a few kits in my shipping agent so you will get shipped shortly if you order exactly same as the stock kits. Also, I have played with Raspberry Pi last

Patrick, Thanks for reporting the progress. Wish you good luck in your TX day. I am interested to know how many contacts you will make. Thanks, Adam

Hi group Few days ago D4D was at home! This evening first receive! It works well, levels about 60 dB with a magnetic loop on 40 m Sunday Will beTX day! Thanks Adam for this toy! 73 Patrick F6GWE

Thanks for clarifying Adam.

Guys, 30dB is recommended. It is not low. Thanks, Adam

I also have low audio at around 30-40db with the pre-built 40m you sent me. But it seems to work ok... 73 Jim - KH2SR

David, Please don’t add amplifier as the output spectrum is not clear due to inter-modulation, so it is a good idea to stay at 1-watt. Thanks, Adam

Adam, It is decoding, have checked parts. It does work and I am very happy with it for sure! Just wanted to see if I could help the audio out a hint more. I made a FT8 700+mile? qso today on a indoor

David, It is not normal. I have used several sound cards and they are normally above 40dB, sometimes over 50dB. This is my Sound Blaster Play !3. Can you make sure that you have chosen the correct

I have used 3 different cards from a StarTech to a SoundBlaster SBX and a cheap no name usb. All at 100% mic level its hard to get 30-40db. 73 David

David, What is your sound card? What is the reading of your audio input in dB? Is it over 30dB? Thanks, Adam

RX audio is very low even with mic line at 100% any one else have this? I did swap out the 3904 for another and it did help a little. 73 David N8DAH

Did you take any pictures of it at FDIM?

This is another great article for PSK receiver. https://www.nutsvolts.com/uploads/magazine_downloads/A_Universal_Direct_Conversion_Receiver_For_PSK-31.pdf Thanks, Adam [email protected]> wrote: --

Folks, https://www.rsgbshop.org/acatalog/PDF/RSGB%20Centenary%20Receiver%20Building%2020m%20Instructions%20V1-5.pdf

They had a couple sample units at FDIM in Dayton. When I talked to them, they told me it was in final stages of testing. I think they will not bring the link live when they release the product.