How would the D4D pair with a 10 watt linear amplifier like the kit offered by QRP Labs? Bryan B. Brauer, PE Consulting Engineer bryan@...

Folks, I suppose you have seen the video "Field Test: D4D and Pi" at my web store http://crkits.com. We Chinese hams have a WeChat discussion group about it and we have achieved several successes putt

Folks, I am out of town until July 20. During this period, I can take orders but cannot ship D4D kit or Mini Wire Antenna kit, but I still can arrange shipment for HT-1A, R3500D and 6-60m coil dipole

I just made my first and fuckin LAST crkits 20M FT8 transceiver,i've done most of it on the TX side and as I done the RX side which it is missing the needed 27p cap all I get is fuckin BC from ABC rad

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the crkits@groups.io group. File: MiniWireAntennaManualDraft.pdf Uploaded By: Adam Rong D

Folks, Do you think a 100W SSB commercial rig is a serious one? If yes, let's see why D4D is serious as well. Human ears can hear 6dB-10dB Signal to Noise Ratio when we do SSB QSO. However, FT8 can de

Folks, See this link: https://www.eham.net/reviews/detail/14267 Thanks for 5.0/5.0 review from OK1UDA. You can write your review there. Thanks, Adam

Folks, I will announce two new wire antenna (kit) products shortly. The first one is the new model Gipsy multiple band dipole to cover 60-6 meter bands with marking of 9 amateur bands on the wire. It

Folks, After you've done your build, you are encouraged to put into use and report your distance of QSO with a screen snapshot of the software (WSJT-x or JTDX) in this thread. The longest distance QSO

Built, tested, working with one of the IMD mods. Built for 20m solid 1w+ out (was getting 1.2w but turned it down for 1w) asking 45$ shipped conus (will ship over seas but must help with shipping) 73

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the crkits@groups.io group. File: D4D Kit Assembly Manual Rev.B.pdf Uploaded By: Adam Ron

Folks, Hopefully you can view this video. Should you have any questions, please reply to this thread. Enjoy. https://mp.weixin.qq.com/s/u7VGaNoBkQkuLb68LNZUFg I hope I can put on YouTube in a few days

Folks, While I was reading a post in SWLing, I think that you might be interested to read my translation of the manual, although the version might be old. The kit is still available from many channels

Folks, Please refer to the photo to make modification to improve IMD. The RF output will be impacted but it is worthwhile to do so. Replace C5 by 103. Remove C6. Add a 1uF-10uF cap. Add a resistor of

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

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the crkits@groups.io group. File: d4dpartlist20190526forMP_80_40_30_20.xls Uploaded By: A

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 i

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

Folks, I just shipped the 2nd lot yesterday. The tracking numbers are updated partially. I will complete it tonight. 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