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

Folks, I just joined the GQRP club and it turned out that I am the first one from China. The SPRAT member quarterly journal is very nice. Let me know if you are also a member. Thanks, Adam

Folks, Still remember the quarterly contest? Last time the 1st place was BG7IKK. He made a QSO from Guangzhou China to Italy with distance over 9000km. Today he refreshed by a QSO with W4UAT with dist

Guys, I sent a post here. I appreciate the support of my original concept and wish good luck to QRPGuys on the commercial aspect. https://mp.weixin.qq.com/s/oGzU_9tGPOeUzL5nc68eRg Thanks, Adam

Folks, There is a thread in an EFHW antenna Facebook group talking about our Mini Wire Antenna. K1RF Steve pointed out one thing that 2T:14T might not be good for a small size toroid, and it is recomm

Hi, I've built the 20m version of the D4D kit and when I connect it both lights come on then both lights go off after 1 second. Plugging into a computer I get received signals that are properly decode

Guys, It is a traditional holiday Mid Autumn Festival, or Moon Cake Festival. I made a small project based on the book of JF1RNR, whom I met in person in Japan Ham Fair. https://mp.weixin.qq.com/s/Z8l

Adam, In a bare bones emergency situation to which extend the D4D works with a high capacity 5V pack as it's sole power supply? (assume connectors worked out properly). ¿Does the D4D work with less pe

I also have just finished the kit did a set up with dummy load and put it on the air. Receiving signals from all over have only made a few contacts with it but Antenna is located in the attic and had

My CRKits D4D-20m is up and running! I’m using my G5RV antenna 150ft from my house and getting spots in NH (Northeast USA) all the way out to Texas and California - pretty good on what must be 10s of

Folks, The first time to join Japan Ham Fair. Really enjoyed it. I hope you can share my fun by reading these two posts. https://mp.weixin.qq.com/s/jKD-XuBDnhEvp2saCvbUHA https://mp.weixin.qq.com/s/5Q

Folks, Lesson learned. This weekend I will update the web site to default EMS shipping with higher freight 20 USD. For the returning customers with good transaction experiences, you can save money by

Folks, The young lady speaks fluent English and she does know about ham radio. The video is recorded by my iPhone in Japan Ham Fair. Enjoy! http://mp.weixin.qq.com/s/vdZSLsstiFEqqEf7FdkQCA Thanks, Ada

Folks, I have added a few important items in this new revision. Such as: 1. In accessories section, I have added Mini Wire Antenna and other newly added accessories/options. 2. In modifications sectio

I just picked up several 4 cell holders for making a battery pack with 18650's, and a supply of used cells. But fully charged cells make for an initial voltage of 16.7 or so volts. Do I dare connect m

Folks, This is my work this weekend. https://mp.weixin.qq.com/s/ehBss8YBT0Y8z2WMg5oKpA Thanks, Adam

Hi I have recently built the D4D kit for the 40m band. The whole experience of building it was great. I have a small problem with the power output however. Even with 800mV at the input and with no mod

Hi! I finally assembled my kit in a couple of hours, and I'm very happy with it. Related to TX power, I read on the manual that needs to be set just at the minimum level that triggers the relay stably