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While I have built several kits - a couple of keyers, Genesis G59 transceiver (hardest kit), SoftRock Rx/Tx, OHR SWR meter and dummy load (by far the easiest ;) ), I'm not sure where to start with

Chuck and Doug, The JH1 Doug listed is his (Japanese ham's) homebrewed version of an 40m SST. I have a hardcopy of the schematic that Doug posted from back about 20 years ago. Another JA ham (don't

I am interested in buying an SST Qrp Transceiver.? Do you have one for sale?? If you do please send private message to me, Doug Hendricks,? KI6DS Email address Ki6ds1[@]gmail.com Remove [@] and

Thanks to Doug for reminding me I forgot to put the watts in. Looking at the watts, it doesn't seem like much change between transistors, does it. Voltage gives a much finer resolution if one wants to

Take the Vpp, square it, then divide it by 400 = watts. (Roughly 2 watts but varies a little for each transistor.) Steve

Steve, so what is the power in Watts?

I tested 10 each of the three transistors currently available--2SC5706, 2SD822, 2SC2078 (from Las Vegas seller). (It takes about 5 minutes per transistor....) I used the same NC40A test fixture and

Gang, Here is photo of my final SolderSmoke DC Receiver challenge project. I'll do a video sometime in the next few days for proof of life. The camera is giving me problems again.? Time for a new

Steve, That is (those are?) great data. Thank you for compiling and sharing it. I'm printing that out and putting the paper with my stash of RF transistors. Did you happen to test multiples from the

Steve, Ahhhh yes of course. We have several ones at work. They work well, but ours are incredibly cryptic to program. Bob [email protected]> wrote:

Hi Bob, AWG = Arbitrary Waveform Generator, aka function generator. Many inexpensive Chinese ones on eBay with various max freq models. However I just checked and due to the new tariff stuff, I

Steve, In your skez, what does "AWG" stand for? Bob WB0POQ [email protected]> wrote:

Here are some output PA transistors I tested in the 7 MHz NC40A buffer, driver, PA circuit, with the function generator adjusted to give 2 watts output (28.3 Vpp) across the 50 ohm dummy load; power

Hi Roy, My experiences building several buffer, driver and PA sections for tests indicate no FB is needed; none of mine used a FB, and worked fine. I would suggest though that -43 or -31 FB is too

The original Wilderness Radio manual calls for a ferrite bead Z1 on the base of transistor Q6 in the driver. ?The ferrite is specified as #64 material. I’m having a hard time sourcing a small bead

Dan, I’ll put ‘em in the mail in next couple of days. I’ll send it to your QRZ address unless you tell me otherwise. Don, K5DW

One would be great, two would be outstanding! Reading through the "Reworking the NorCal 40A" story in files section, it wouldn't hurt to have a spare. -Dan W3SLD

I've mentioned this before, but please do not expect quick shipping.? The seller told me he's almost always on business trips M-F and doesn't get home to process orders until the weekend. Steve AA7U

The Las Vegas seller of good 2SC2078's showed sold out over the weekend, but a check this morning shows 15 available at $2.10 each.?? https://www.ebay.com/itm/286546961462 I've tested ten of them

?Dan, If you still need it, I’ve got one I can send you. Maybe two, I’ll have look. Don, K5DW