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I just tested the results of the REF settings in the ON and OFF states and can see the difference between the two states; The new PCB has improved on this clock trace, and I will test it tomorrow

At the same time, the third layer under my previous version LO chip did take a clock line, and I wrapped the clock line with GND on both sides,(L4:LO chip,L3:GND,L2:CLK/SIGNAL,L1:SIGNAL), maybe this

On Mon, Jun 5, 2023 at 08:42 AM, m0wid wrote: > > Interesting - you have used a larger higher resolution display - nice! > > I do not see these 30MHz harmonics on the high range, though I do have a >

Interesting - you have used a larger higher resolution display - nice! I do not see these 30MHz harmonics on the high range, though I do have a spurious signal at 270MHz, so I think there is more to

you are right, some series resistor could reduce the harmonics from the clock,but I debug through series resistors, and the best is -80dbm(before it was -70dbm, see the picture) And I chose SAHi and

@ blackberryer I cannot see the image unfortunately.? 30MHz is likely to come from the oscillator traces.? Any oscillator tracks routed near the modules or RF signal lines?? Maybe some decoupling

If we want to mix the 800MHz RF frequency input to the LF port, make the following corresponding modifications: LPF accordingly modifies the cutoff frequency of 350MHz to 900MHz; The center frequency

In low mode the input signal is mixed with the Local Oscillator from the SI4432 to produce the IF.? This IF is filtered in the SAW filters (B3550 or whatever you used in your build) - the IF

Hi,m0wid My computer hard disk is broken, I tried to log in to know that I need gmail, and in the last year Gmail was blocked by an insurmountable force, and now I have solved the account login

Hello, Where to find version SimpleSA ESP32 *0.14* to do some tests or put the zip file I have the 0.15, 0.11, but i want test the 0.14 Thank's

Gérard, Please give me your postal address in a private message and I will send you a Si4432 module. If you need a row of 1.27 mm spikes, I can send one. -- Gyula HA3HZ

Hello all, Hello Dave, I haven’t written for a while because I have a faulty SI4432 module. I ordered some spare modules. In the picture , they were identical, but I actually received XL 2300-SMT

hello, here the answer about the 5 transistors Interisting.... cdt Differential probe - Page 1 (eevblog.com) ( https://www.eevblog.com/forum/projects/differential-probe-376940/ )

After putting on my glasses it looks ok… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner –

In both cases it looks like the schematic is correct, but the execution on the PCB is wrong at the gimic capacitor… R1 is on the wrong lead. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ

hello, As I always have a little time, I look at the possible DIY of a differential probe. Will it ever serve? Pleasur to do lol In short, as on the active probe we use a fet BF998. As it is sold at

John, You’re right, you have to be able to weld a tip. Good analysis I’m editing right now cdt

It looks? like you need to expose some copper on your input to solder to. -John K6JDS

No error, your pcb is correct. Nice job, let us know how well it works. Bill - the capacitor is made up of the pads on the top and bottom side of the pcb -- Terry VK5TM https://www.vk5tm.com

William here the original project I think no error?? You confirm or ? cdt