George Christofi : it is a monster, so the little brother gets used for quick and simple things (most of the time), and big brother comes in for the more precise jobs. Great multimeters. Just wish Brymen was my sponsor :)
I think the 4th one I would have made 24, you can already get to 18 with the first 3 as is. Is there a drawback to getting some nichrome wire and winding your own resistors? Beside size constraints that is. Edit: Thank you for making a tasteful sponsored video, I find that I don't much care for other guys' videos where the sponsor is just a commercial. You happily endorse a product that you actually use, kudos my friend. I own a CNC engraver/router and etch my own PCBs. My hobbies lead me to modify the control system in the router. Tear out the old, put in a new, then I hooked up the custom setup to an additional Linux computer, that I put together from leftover parts, just for sending G-code to the controller. Next I'll be adding ballscrews, and stronger linear rails for better rigidity and tolerances. I also built my own 3D printer and I'm still modifying that, my next project there is to convert the entire system to 24v (up from 12v), higher voltage = more power from the motors, which equates to better printing quality. I mention all of this because of content creators, just like you, that have truly helped me get back into tinkering with crap (in general) and a desire to learn electronics on a more fundamental level. I got the router to make my own circuit boards and built the 3D printer to make custom enclosures for my projects. Of course, they are much more useful than just that and I find that I use both my machines for so many other things, but anyway. I know I have expressed appreciation before, but I truly want you to know that I appreciate all that you do. Your content may not be tailored for "the masses" but I enjoy learning new things constantly and really enjoy watching old electronics being made serviceable again while learning along the way.
Edwin also pointed out the advantage of making the last stage a 24dB one, and I agree. I didn’t consider it as I rarely need more than 30dB of attenuation, but it makes sense to make this alteration in version 2. As for sponsorships, I accepted the offer from jlcpcb because I was already using them. The only change was making videos of some of the projects that I had previously not bothered to publish. As for the Brymens, unfortunately I just had to buy one :) I’m glad that you enjoy the channel. I tend to publish anything that tickles my fancy, so I don’t really target any specific viewer. To my surprise, quite a few people find it of interest, if the subscriber count is any indication. I tend to learn more myself than teach others, so it’s quite fun. Enjoy the hobby, and thanks for your encouragement. Regards from Madeira.
@@electronicsoldandnew Crosstalk may probably hinder you to get much above 20dB att. on frequencies beyond 30MHz. Great little att. project. Did one back in the 80s and it is still working fine to 500MHz for up to some 15dB att. after that crosstalk hinders further att. on mine.
What a fantastic build you did a wonderful job. I have an RF attenuator made by Bird that has a similar layout and was expensive back in the day. There are some attenuator calculators that will give you nearest preferred values. It was probably advantageous to parallel up the resistors to reduce the inductance value anyway. A good test for these is to do a frequency sweep I’m not sure if you have a vector network analyser or mini VNA but it can be very revealing. Thanks so much for sharing regards chris.
This does look like a very usefull project and I am considering it's construction. Have you decided to release it by making the boards available to order on JLCPCB. Also thank you for sharing your knowledge. I do like your box idea and be able to assemble multiple projects together by mounting them side by side. Quite Brilliant. Thank You... Doug
I did a more recent one and shared the PCBs on pcbway. Here’s the link: Switchable Pi Attenuator with Dummy Antenna, using PCBWay PCB's ruclips.net/video/3omksRXF7Sc/видео.html
Congrats to the new multimeters, the big one needs a review, isn't it? Since a half year ago i own a Fluke 87v, used, but in fact new (ebay), for 200 €. So i would like to know, how you are living with this PM-Part. And i have one question abt your attenuator. How are the switches in higher frequencies? And how do they influence the signals with capacities or resistors? Great video! But i wouldn't use smd-parts in home-projects. My eyes are not so good and my fingers are not made for such little objects :-)
Alfred Neumann : I bought the Brymen because of many reviews I saw on RUclips. There is one for the BM839 that particularly impressed me, and it’s actually an older version of this one: ruclips.net/video/fRjXSbXZLmM/видео.html I tested the attenuator up to the max frequency that I’ll use it at, namely 10.7MHz, and it performed perfectly. I’m sure that if we want much higher it would start to get noisy, but for my needs it’s great. I also stayed away from Smd but now I love it. I’ve actually used a magnifying glass or the magnifier function on my iPhone to solder in the past, but that was not necessary here.
1. Are these 1206 Spacing? 2. Have you released a 3-Resistor board? 3. Do you have the .ZIP file so one can order these boards? 4. Have you updated a video on the new board?
Your PCB (version 2) is just what I have been looking for to allow me to home construct an RF attenuator to go between a receive antenna and an SDR receiver using surface mounted resistors. When you have revisited this project, how do I access the files to order up the boards from JLCPBC?
@@electronicsoldandnew Sorry Manuel, i must be blind. I cannot find the pi attenuator project with 4 switches on pcbway share. Please can you give me the exact name of it? Thank you
Wow... Love the design and the mods make it an even better bit of kit. As for your new multimeters, that big one is a monster!
George Christofi : it is a monster, so the little brother gets used for quick and simple things (most of the time), and big brother comes in for the more precise jobs. Great multimeters. Just wish Brymen was my sponsor :)
Very nice job on the board! That omni calculator site is a great find btw.
I find it very useful.
I think the 4th one I would have made 24, you can already get to 18 with the first 3 as is. Is there a drawback to getting some nichrome wire and winding your own resistors? Beside size constraints that is.
Edit: Thank you for making a tasteful sponsored video, I find that I don't much care for other guys' videos where the sponsor is just a commercial. You happily endorse a product that you actually use, kudos my friend. I own a CNC engraver/router and etch my own PCBs. My hobbies lead me to modify the control system in the router. Tear out the old, put in a new, then I hooked up the custom setup to an additional Linux computer, that I put together from leftover parts, just for sending G-code to the controller. Next I'll be adding ballscrews, and stronger linear rails for better rigidity and tolerances. I also built my own 3D printer and I'm still modifying that, my next project there is to convert the entire system to 24v (up from 12v), higher voltage = more power from the motors, which equates to better printing quality.
I mention all of this because of content creators, just like you, that have truly helped me get back into tinkering with crap (in general) and a desire to learn electronics on a more fundamental level. I got the router to make my own circuit boards and built the 3D printer to make custom enclosures for my projects. Of course, they are much more useful than just that and I find that I use both my machines for so many other things, but anyway. I know I have expressed appreciation before, but I truly want you to know that I appreciate all that you do. Your content may not be tailored for "the masses" but I enjoy learning new things constantly and really enjoy watching old electronics being made serviceable again while learning along the way.
Edwin also pointed out the advantage of making the last stage a 24dB one, and I agree. I didn’t consider it as I rarely need more than 30dB of attenuation, but it makes sense to make this alteration in version 2.
As for sponsorships, I accepted the offer from jlcpcb because I was already using them. The only change was making videos of some of the projects that I had previously not bothered to publish.
As for the Brymens, unfortunately I just had to buy one :)
I’m glad that you enjoy the channel. I tend to publish anything that tickles my fancy, so I don’t really target any specific viewer. To my surprise, quite a few people find it of interest, if the subscriber count is any indication.
I tend to learn more myself than teach others, so it’s quite fun.
Enjoy the hobby, and thanks for your encouragement.
Regards from Madeira.
@@electronicsoldandnew Crosstalk may probably hinder you to get much above 20dB att. on frequencies beyond 30MHz. Great little att. project. Did one back in the 80s and it is still working fine to 500MHz for up to some 15dB att. after that crosstalk hinders further att. on mine.
What a fantastic build you did a wonderful job. I have an RF attenuator made by Bird that has a similar layout and was expensive back in the day. There are some attenuator calculators that will give you nearest preferred values. It was probably advantageous to parallel up the resistors to reduce the inductance value anyway. A good test for these is to do a frequency sweep I’m not sure if you have a vector network analyser or mini VNA but it can be very revealing. Thanks so much for sharing regards chris.
My pleasure. Thanks Chris.
This does look like a very usefull project and I am considering it's construction. Have you decided to release it by making the boards available to order on JLCPCB. Also thank you for sharing your knowledge. I do like your box idea and be able to assemble multiple projects together by mounting them side by side. Quite Brilliant. Thank You... Doug
I did a more recent one and shared the PCBs on pcbway. Here’s the link: Switchable Pi Attenuator with Dummy Antenna, using PCBWay PCB's
ruclips.net/video/3omksRXF7Sc/видео.html
Great project. Have you ever made the gerber files available.
I believe it’s still in the share section of the supplier website.
Congrats to the new multimeters, the big one needs a review, isn't it? Since a half year ago i own a Fluke 87v, used, but in fact new (ebay), for 200 €. So i would like to know, how you are living with this PM-Part. And i have one question abt your attenuator. How are the switches in higher frequencies? And how do they influence the signals with capacities or resistors? Great video! But i wouldn't use smd-parts in home-projects. My eyes are not so good and my fingers are not made for such little objects :-)
Alfred Neumann : I bought the Brymen because of many reviews I saw on RUclips. There is one for the BM839 that particularly impressed me, and it’s actually an older version of this one:
ruclips.net/video/fRjXSbXZLmM/видео.html
I tested the attenuator up to the max frequency that I’ll use it at, namely 10.7MHz, and it performed perfectly. I’m sure that if we want much higher it would start to get noisy, but for my needs it’s great.
I also stayed away from Smd but now I love it. I’ve actually used a magnifying glass or the magnifier function on my iPhone to solder in the past, but that was not necessary here.
1. Are these 1206 Spacing? 2. Have you released a 3-Resistor board? 3. Do you have the .ZIP file so one can order these boards? 4. Have you updated a video on the new board?
Not yet. I’m getting the shelving redone so will revisit this project soon.
This is great. But how do you do these calculations without the usage of that internet website?
These calculations are basic electronics theory, and the formulae exist. The online calculator is just a simple application of the formulae.
You will be very happy with your Brymen meters im sure. They are worth the money.
So far, I’m very happy.
I wish I could buy something like this as a kit. Having a heck of a time finding a step attenuator as a beginner. Anyone aware of one?
I’m afraid not.
Thanks - I will wait patiently!
What about using small preset pots for your resistors?
You could, but fixed resistors are actually easier for me. You set them once and forget about it.
Your PCB (version 2) is just what I have been looking for to allow me to home construct an RF attenuator to go between a receive antenna and an SDR receiver using surface mounted resistors. When you have revisited this project, how do I access the files to order up the boards from JLCPBC?
I plan to make some mods and order new boards. At that time I will post the Gerber files.
@@electronicsoldandnew Do you post already the Gerber files?
They are shared on pcbway website and you can download them.
@@electronicsoldandnew Thank you :-)
@@electronicsoldandnew Sorry Manuel, i must be blind. I cannot find the pi attenuator project with 4 switches on pcbway share. Please can you give me the exact name of it? Thank you
i work with these at my job,. thanks
👍
Why didn't you opt for -3db, -6db, -12db and -24db? That would be more logical to me, for now you have two options to select -18db.
Very Very good point. I didn't think of that because I normally don't need to go much beyond 30dB, but definitely makes sense for version 2. Thanks.