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the output should be audio.? a small xfrmr of what ever impedance you need,? should do the trick.? ebay has a lot dave k7da

Hello, I'm designing an audio stage after a BFO diode ring mixer and I seem to be having trouble converting a 50-ohm impedance to something the amplifier can handle (10K input). I know how to convert

Guys, I know this is OT but at Dayton I was able to find an AEA MT-1 code trainer, the same one I learned on when studying Morse for my Extra 25 or more years ago.? I wonder if someone knows about

Added SimSmith loss models to: https://www.kn5l.net/kn5lEfhwUnun/ Towards bottom of page is a SimSmith model using Fair-Rite complex permeability file for computing transformer core loss. Using this

Hi Graham, Yes, I have a spare. Will have to find it, but will let you know. Henrik - VK2HHS

Hi All, Would anyone in VK have a Norcal 40A PCB they are willing to sell? 73, Graeme VK5GG

Down to 9 of the 30m version. -- Karl Heinz - K5KHK

Correction; there were 11 of the 30M units, so I guess 10 now. Jim

Hey Chuck, I just ordered one of the 30M 1 Watters. I emailed Diz to check inventory and he got back to me immediately. There were 10 of the 30M units left so maybe 9 available now. Thanks for the

Randy Foltz writes: <snip> Randy, My experience exactly and concur with your synopsis 100%. A 3-6dB level means a "machine" detected you slightly above the noise floor but nothing the human ear would

My observations related to RBN are that unless you are a SOTA station or in a QRP-focused contest, you will need RBN reports of at least 10 dB in order to have folks answer your CQs.? They might be

I'd also like to add a shameless plug for QRP activity. Every month NAQCC runs a two hour sprint, this month it's being held this Thursday from 0030Z to 0230Z. Always attracts a good number of

chuck adams writes: The bands are fairly poor for everyone. An even playing field QRP/QRO unless you're running big power into a beam. 14.060 is where I work most of my QRP stations daytime plus

Got a QSO at 1629UTC this morning after a few days of playing around. I just don't know if anyone on this group is getting on.? There is no activity that I hear from QRPers on the calling frequency

I bought a set of these for my NE4040 project.? Was going with 1/4W, but thought I could get some extra space in 100mm x 100mm board by going 1/8W. <https://www.ebay.com/itm/153283774455> So, there

Nice to see someone using those cheap chinese am/fm radio chipsets for amateur radio uses. Through hole and, much cheaper than sa602 and two (3 if you count the fm discriminator) mixer per package. I

Gang, Diz, W8DIZ, owner and operator of KitsAndParts.com just posted to the list related to the 1W the following message. Put here for your information and a heads up. -------- Thanks to all that

When looking for cheap boards from China, I always check pcbshopper.com. You can specific your requirements for the board (layers, size, thickness, amount of copper, silkscreen, etc) and get an

William, Email off the list and we'll discuss the Zuni Loop outing.? I haven't made plans for FD and was thinking of finding a local group, but I'll think about CA and I can pay for the trip by

Chuck, Good to know. When I first read the email, I thought Diz was going to DISCONTINUE the 20m 1W kits after the last five sold out. But, rereading it, I believe he means that he will not be kitting