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Chuck, As long as you're on about this, wonder if you (or others) could keep your eyes peeled on Amazon or eBay for NP0 and or C0G cap assortments to fill in the potholes in my collections. NOT SMD

Chuck and Group et al... I still have the files from the old qrp-tech Winter 2018 Project #4 "The K7QO DC Receiver". I have both the original and the R2 version. Chuck would you like me to send them

For the all transistor transceiver group. You will need to match crystals.? Here is one option of many. Go to W7ZOI.net and go to the technical stuff button top right. At the bottom of the new page

John, KC9ON has a great website with a good selection of crystals at great prices and many other interesting products. Jim WB4ILP <djdaverichards@...> wrote:

Jim, I have to go back into the bat cave to find what I need.? It's not on my current drives and I have an old computer in a cabinet to dig out.? Then I have to go through the DVD collection to find

John KC9ON over at 3rd Planet Solar has them. He has a website, or you can order from his eBay store. There is a range of frequencies available. You can pick 5 frequencies from the list, for $10 inc,.

It's the cheap no-name brands that seem to have the rust problem, I suspect better quality ones might be OK. My aversion to this stuff stems from back when I used to manufacture stuff that had to use

output levels desired 1.? 50uV? (-73dBm) ???? 1uV? (-107dBm) Voltage divider to get to the 50uV before starting attenuation. Sorry for the earlier confusion.? Typos galore. Obviously requiring

Thank You Chuck ! I'll be watching. I want to build the DC RX Manhattan style. I just ordered a few NE602 and NE612 from AliExpress. I hope they are genuine. Jim WB4ILP [email protected]> wrote:

When I buy resistors, I usually buy 100 of a value at a time.? I buy 1/8, 1/4, 1, 2, 3 ,and 5 watt values.? (Buying in big quantities reduces prices.)? Because of the quantity, small pouches are

I'll add the cap.? Don't remember at the time it being an issue.

Thread just started and already have one correct.? Schematic and BOM to be found or reconstructed later today.? Just finished a Manhattan board for the other project in progress.? Stay tuned.

Hi Chuck, I haven't been following this thread. Where do I find the schematic and BOM for the DC RX? Thanks ! Jim WB4ILP [email protected]> wrote:

The title says S9 (50uV) generator. What are the 0.5uV for? -- 73, Robert

Before 40 people jump in to correct me on absolute levels from this square wave output, I was being somewhat tongue in cheek in my reply. Even if the absolute fundamental output of this generator is

I do! Still available? If so, I’ll take it. 73 -- Matt N3AR

Chuck: This looks like a nice, clean PC board layout, and thanks for sharing your work with us on this group! Just a comment- looking at the layout, are you intentionally letting pin 1 of the NE602

I believe you can reduce the output level somewhat in the software to help with the attenuation. 73 Don ve3ids <ratzlaffsteve@...> wrote:

4.2 volts across 50 ohms is +25 dBm. 0.5 uV across 50 ohms is -113 dBm. That's an awful lot of attenuation you're going to need (25 + 113)--I doubt your extensive shielding needed between input and

I have an extra copy of EMRFD, brand new with the CD still in the unopened back pocket, because someone gifted me an old copy roughly a week after I found this one. I paid $60 plus shipping for it,