Here are some pictures of my mini FT8 station I built for Field Day. It is built around a Sunfounder 7" hi-res screen and Raspberry Pi 3B. It uses a wireless keyboard/mouse combo, $15 GPS module and $

The SA602 only requires a 50 mV p-p signal to fully unbalance it. Larger signals create all kinds of unwanted mixer products. Since the VOX requires a 1200 mV p-p signal to trigger it, there needs to

Thanks for all your support. Happy thanksgiving to USA and the rest of the world. Thanks, Adam, BD6CR CRKITS.COM

Hi I have completed my DSB 40m build but cannot get any audio out of it have tried connection to usb sound card, pc, external Speaker and headphones Vox triggers tx but I dont see any signal being sen

Hi there... Had my first FT8 contact tonight using my just completed D4D DSB. This was also the first two way contact using the magloop prototype you see in the pic. Thanks for the kit! 73 de AE6UJ

Hello All, I have a 20M D4D, and I think I may have a problem with it. I have been a bit mystified that I have so far only had 1 contact on this thing even though I've been on the air with in for many

Hi all. Hoping someone can advise me what causes the pulling of the 14.070.0 crystal to 14.074.0 In step 3 of the manual it states by adding a wire to the antenna termanual of your transceiver and pla

Folks, K7QO closed his qrp-tech group a few days ago. I am sorry to know that. Is QRP Tech obsolete? Thanks, Adam

I have sent 2 e-mails to the USA site asking if they have any assembled radios with no response. I would really like one of these radios and thought shipping from US location would result in a faster

Folks, It will be great time to try 80m. Remember, we have the 80m version of D4D. Thanks, Adam

Hi All. I'm curious if there's a point in the D4D circuit that would allow for an easy check of the input audio level using just an oscilloscope. Can one look for clipping (or some other symptom) that

Will the D4D work with Fox / Hound Dxpeditions?

Hi, Finished the build of the D4D kit without significant issues after a cold soldering prevented the VOX to work properly. Did some test during the build but not the receiver test. Upon finishing it

Folks, https://www.rsgbshop.org/acatalog/PDF/RSGB%20Centenary%20Receiver%20Building%2020m%20Instructions%20V1-5.pdf Any idea? Give it a try to mod D4D 20m FT8 to 20m PSK at 14070? C3: 15p -> 39p C2: 2

Hi, I just wound this with the opposite handedness of the example in the build instructions. I just wanted to be doubly sure that it doesn't matter, for this particular component. It's fine this way,

Hi, Building the D4D at Step 2 WITH the MOD on pag 25 implemented when testing the step upon powering the circuit the relay clicks but the amber LED goes and stays on. On previous STEP 1 testing the g

Hello, This email message is a notification to let you know that the following files have been updated in the Files area of the crkits@groups.io group. /D4D Kit Documentations/D4D Kit Assembly Manual

Folks, It is BG5JNT’s FB project. He built many projects based on my Choc perfboard and SST is his latest one. Nice design from NorCal in late 1990’s. Thanks, Adam

I have a 40m KN-Q7A that has been shelved for a while. I see there was an excellent looking kit called Sandwich VFO that greatly enhances the radio but shows as sold out. Is there a plan to re-introdu

I would like to send messages. -- Larry Lovell 73's N7RGW http://QRVTronics.com Cell: 214-697-1729