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Lovely kit and the downloaded manuals (construction and operationl are fine! Tony VK3TP

Folks, A few of customers might have questions when you receive your HT-1A kit or assembled kit. Let me explain a few things: 1. User manual is not included. You will need to download from

Ron, It is correct that the C1162 collector connected to the back plate, but the back plate is insulated with the mounting hole because there is a layer of black insulator inside the hole, if you

Update a new QSO from BG7IKK and K7BV with distance of 13499km (from South China to East Coast of USA). Rig: D4D 20m 0.5W Ant: EFHW about 10m long wire near window Thanks, Adam

the data sheet for the c1162 shows collector connected to the mounting hole, mine shows screw was shorting collector to ground. ron, kc0tdj

Great!? I do not use Farcebook either. This groups.io is just right. -- 73 de w8nsi jim

The barrel or the external ring of the power connector should be grounded so it is okay to touch the plated dc jack hole. For TO-126 package transistors like Q4, the hole has insulation already so a

the barrel or the power connector was touching the plated thru hole of the back plate.the screw in q4 grounds the collector to the back plate. it messed with the voltage,not sure if frequency was off

Ron, I don’t understand the point. This is nothing to do with frequency accuracy. Also, nylon screw is not necessary if you follow my instructions to build. Thanks, Adam

found the problem. power socket is off center in hole when in the case. grounding the collector of q4.? i put a nylon screw in to cure it. socket is flat on the board its built a little off i

Don’t worry. I meant Facebook group is a new one, but it won’t replace here. Thanks, Adam

I am offering my unbuilt D4D kit for sale.? It is the 20m version, and the price is $35 shipped.? U.S. addresses and PayPal only, please. Jerry AA6KI Tucson

I agree with Mr. Brauer.? Groups.io is an international venue, is it not? Jerry AA6KI Tucson

dont know what i did but its working on frequency now. thanks for your help. ron, kc0tdj

Ron, Since the info is limited, I have to guess. I suppose you have calibrated K2 frequency. Please confirm you did like one of these ways: 1. Use zero beat to test the carrier leakage from the D4D

Bryan, I have a WECHAT group for domestic hams to real time discuss about D4D kit building, modification and application. Facebook group will serve as the same function for international hams. I

Adam, I surely hope that this will not be the sole, or even primary venue for information exchange. I do not do, and never will do, Facebook. *Bryan B. Brauer, PE* *Consulting

i used my k2 to measure it.

Folks, You are invited to join the new group. https://www.facebook.com/groups/487925331780070/ Thanks, Adam

Ron, If you measure by a frequency counter or other devices with a probe, the capacitance introduced by the probe will pull low the oscillator frequency, and 2kHz is a reasonable number. You can