开云体育

TinySA Team, Quick question...I have things running now on my modified Arduino Nano and the Windows TinySA application spectrum display came up REALLY nice at the beginning, but I went to change

This vendor: vesny89735-6

I don't yet have working hardware, so can't verify your results. I assume the blue line represents both PGA and LNA gain. And that the single step down and back up near the middle represents the LNA

Dave, can you send me the code snd any schematics you are using. Glenn and I are working on an ESP32 version. He's developing a PCB or more likely two.? Email is good on QRZ . -- John P. WA2FZW

Hi John P, good to meet you again.? We met before when you were developing the antenna analyser project. I have the TinySA working with the ESP32 and the excellent TFT-eSPI library, but with an older

Thanks Gary It print's out readable enough. Appreciate it. Glenn vk3pe

I have been away, and will be the rest of the week, so no time to play, however last night I did add back in the matching components for the SAW filter.? It eventually dawned on me that a highly

Apart from using the output of the mixer there is no other place to tap any signal. The RX SI4432 is self contained and apart from the RSSI it can only output digital decoded signals of a limited set

Here you go Glenn. Hopefully you can see the yellow... 73, Gary WB6OGD

It performs remarkably well, simple as it is. I may be getting carried away, but if fabbing a board for it I would be inclined to put down another dollar's worth of parts if that improves performance

Many thanks Gary, Thats probably? a better option cost wise.?? Could you please measure the dimensions for me if you can. glenn

Jerry, I totally agree with the shield and the clean power supply. That's why I'm trying to get to a PCB, but now I'm struggling to figure out how to connect the pins to the Blue pill after Joerg's

Yeah that MMIC is a smart move, but I would also make it possible to switch it in and out because it will increase the noise floor. Diode blocking is a simple/great way to do that. Dr. William J.

There are two main variants. Parallel, with 8 pin connector, and serial, with 5 pin connector. Both will work but require different connections to mcu -- HBTE Files section:

Guys I did test al kind of attenuators before and after the mixer and all kind of amplifiers in various places. The SI4432 has it's limitations and without any amplifier or attenuator you get decent

I have one objection to those recommendations from Minicircuits: Our IF port is operating at 434mhz. Our RF port is operating from 0 to 250mhz. We need to use the port capable of low frequencies at

Jerry, the attenautor at the IF port of? the mixer will provide a certain (minimum) termination (12 dB return loss) to all mixing products of the mixer gives a certain (minimum) termination to the IF

Great care must be taken with what the mixer is fed as it produces the most artifacts in the entire chain. Rather a small dynamic than extra signals. Here's what Minicircuits says: 1) Most

Having the W7ZOI front end topology of:? ? ?LPF----mixer----6dbAtten----MMIC----IFBPF--- ... means we have 6dB loss through the diode ring mixer plus 6dB loss through the following attenuator

Gary, Did you ever look further into why you had excessive background noise when running the Nano at 3.3v? The Nano is digital, it either works or it don't. If it don't, it will generally run off the