Thank you, Steve. Your diode mod is effective. In my test, the carrier leakage improved by about 5 dB, as a side effect, both USB and LSB signals increased about 1 dB which is a surprise to me. I also

Hi all, I built the D4D kit a couple of days ago and it worked well. I didn't make any QSOs just yet, but the band conditions are not good so this isn't a problem. Yesterday, however, I powered up the

Folks, I have decided to join Japan Ham Fair 2019 this year. It will be a fast in fast out trip but I should be able to stay at QRP village booth for about 1 day from August 31 noon to September 1

Folks, I will be on vacation from August 6 to 11. I will reserve something at my shipping agent, but likely will not be able to cover all your need. The next shipping will be August 19. I still take

Many thanks for your information. good luck yves

samir, Nice job on the building and QSO made. You are welcome to join the contest this quarter. Thanks, Adam

just a heads up the oven resistor needs to touch the crystal case.

Hello, I would like to share with you photos and information about the kit that I posted on www.Laselki.net , I made hundreds of QSOs so far with the

Sounds good. I will modify the emitter resistor from 1.5k to 680 ohm and give it a try later this week. Just FYI: After applying the diode modification to reduce NE602 power supply voltage from 5V to

Yes, Q1’s collector should stay above 5V when 12_V is applied. Steve

Hi Steve, Thanks for your sharing. I will test them. One thing to confirm: If we add a diode between +5V and the collector of Q1, when 12V_R is present, the diode will be reverse biased? If not, I

Have u done the mods yet Steve? Btw have u got a AM BCB filter on yours and is it my mixer or is urs also seem a bit deaf on RX?

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

I bought this antenna when Adam first announced that it was available . Since I have to depend on my grandson to do my antenna work for me , due to my physical limitations and he was able to easily

BG7IKK did it again! Now with N0FW with distance of 12821km. Thanks, Adam

Correct. This modification is made by BH4DCL and it is smart. Thanks, Adam

Hi Adam! So just replacing C5 by supplied 105 Will work? No other modification? Thanks De: Adam Rong Enviado: sábado, 27 de julio 20:57 Asunto: [crkits] D4D: Part List Updated with IMD mod and more

Folks, As I have added more options or accessories, here I have to give a simple selection guide for your reference. How to order? Visit http://crkits.com and find the drop down menu for D4D order. Y

Folks, I just read a post from an angry Japanese PSK mode operator: https://groups.io/g/rttydigital/topic/ft8_by_d4d_dsb_transceiver/32465355?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,32465355 I

Folks, For the IMD mod, I mean I opted for the new modification method described in Modification Possibilities 5 instead of the first one. it will make life easier since I can supply the 105