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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,

I did the math.? Fundamental amplitude for a square wave is 4*A/pi, where A is the square wave amplitude.? For A=3.3V, then fundamental is 4*3.3/pi ~= 4.2V.? Just attenuate to 0.5uV and let the

Forgot.? Here is board layout for the DC receiver.? Gerbers at 11.

1.? I decided I would go ahead and keep the 3120 pcs resistor kit.? We get about 10cm of ??? rain per year and usually in one or two storms during summer monsoon season. ??? I'd quote a line

?No problem, Michael, Be sure to read K6WHP reply about two posts back in this thread; it is very comprehensive and will lead you to info that will help you decide which/where to buy yours. The

I always wondered why my resistor end pieces were copper coated steel when I found I could pick up the pieces with a magnet……. Must save a ton of money over the years of production. Copper coated

Tim, Thanks for sharing that info. Personally, I didn't know that the NanoVNA was capable of making such measurements (at least not accurately). Maybe it's time for me to buy one of those clever

This has been a long-time question for me, particularly acute at present as I re-build my homebrew inventory. My current experiment is with 2mil 2"x3" plastic press-close bags. These can be had in

For what it's worth: can you name a Chinese manufacturer of 1/4w carbon film resistors that uses copper wire for leads instead of plated steel? One Chinese manufacturer known for producing 1/4W carbon

My experience with coated steel is that they rust and the problem with that is it can cause the leads to rust through/break over time - it gets worse if you build something for portable use and use

As to carbon film resistors generating higher noise than metal film ones: that is true when DC is applied to them. Otherwise (such as in RF attenuators) both types generate only thermal white noise.

Terry, Yes, they are the coated steel leads.? Didn't know that would be or was a problem. I checked and Amazon does have free return policy on them. Is there a particular brand that you found that

Did you try the magnet test to make sure they aren't the tin coated steel connecting lead types? Got caught once, they went in the bin quick smart. -- Terry VK5TM www.vk5tm.com ( https://www.vk5tm.com

Thank you for the information. Ted [email protected]> wrote:

The blue body is for the metal film resistors and they are 1% precision. The tan body is for the carbon film resistors and they are 5% precision.

Other than being difficult to read, is there any significant electrical difference between blue and brown for the color? Ted [email protected]> wrote:

I showed a cheap component tester in my last video.? I use it to measure everything before I put it into a project.? The tester doesn't have to be accurate all the time.? It's just to make sure I

That's my understanding Chuck; that the metal film resistors produce less noise. I haven't done a comparison, or any measuring though, so haven't actually noticed it. I measure all resistors before