Hi Larry, I will wait on assembly my kit until you determine the issue. iPhone Aloha

Hi, I am assembling my D4D kit and discovered the missing 27p monolithic cap for the oscillator. I need this ASAP. I have checked all caps three times and this is missing. Thanks, Carl iPhone Aloha

Yes I am actually missing the 27p, only had 1 in kit. iPhone Aloha

Hi all, I just completed my 20m build and after countless CQ’ and checking PSKreporter I don’t believe the output of the transmitter to be anywhere near a watt. I checked for signal on my main HF rece

Hi Nigel, Yes, I was thinking the 20m would put out somewhere around 500mw. My antenna on 20 meters with WSPR gets spot reports all over the US as well as Africa, South America on 1 watt. So antenna i

Hi, I just sent a 1 watt CQ on 20 with my other QRP and had a QSO with a Washington State from my Minnesota QTH. I also confirm PSKreporter from several coastal states. So it’s just the difference fro

Hi Conor, Yes, I carefully scraped the coating off. I tested each coil before as well. To be sure I just took the pcb out and under 30x checked each solder joint as well as all coils. To be sure again

Thanks Jim. I am suspecting a bad BD139. They are cheap, I will do some measurements with the existing one and a new one. After that I have no idea what to check. After several examinations on top, bo

Yes, it’s transmitting but virtually no power. iPhone Aloha

Tim, is the IRF510 a direct sub for the 139? If so what is the difference and are any additional mods required for the 20m? iPhone Aloha

Hi TE Fid, All excellent. I have ordered Phillips BD-139 and will build a dummy load and measure output with both devices. I explored the Toroid site, looks like a lot of interesting projects and a go

Hi Nigel, Yes, I am only chasing an output up to a watt. I will not becc by able to measure my output with B any degree of accuracy for a couple more days. If it is just a bad 139, that would be great

Hi Nigel, I had an email issue, and just got it corrected. Ok I will be spending the weekend working on the issue. Will check all voltages. 73’s iPhone Aloha

I have had some success! I installed an NOS Phillips 139, then pulled the transformer verified that was ok, installed both. No replies to CQ, but PSKreporter shows my signals are getting out and amazi

I did get a reply on CQ but lost contact so it’s working. QRP is great fun. I have a couple QRP rigs. I no am putting up a Mosley beam this summer and looking forward to seeing how that works with QRP

I bought crystals to change the unit to WSPR but was told the frequency stability would be an issue to just install crystals. iPhone Aloha

I build both the D4D 20 and 40 meter rigs. Both did not work well at all. The 20 meter tx had 200 mw output. Pretty useless in my opinion. The 40 worked a couple times then replaced relay and transist

I had no timing issues running with Dimension 4. My antenna had no issues. I get to Australia, Antarctica, Africa, and Europe with 200 mw on my Zack WSPR. Understand FT8 is much different than WSPR, b

Nigel, I appreciated your help, and did your recommendations. Unfortunately without success. I installed NOS Philips BD139, no change. Checked all transformers, no change. It wasn’t a matter of being

I did and do appreciate all the support from the group. I no longer have these assemblies. iPhone Aloha