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offer of help #1

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opened 2024-06-09 23:08:56 +02:00 by bradshawlupton · 1 comment
bradshawlupton commented 2024-06-09 23:08:56 +02:00
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A few of us, would like to help turn this into a "pretty darn good" reciever, still at minimum cost for the Chatham Marconi, Cape Cod STEM classes. We are wondering if you would like to set up a forum group, for us to stumble around and experiment. I have set up a wspr beacon 11 ma fivw feet from a pico-sdr. This is very 21 year old Marconi like from the spring of 1895. He was using the best "toys" of his day, as are we. Bradshaw K1TE

A few of us, would like to help turn this into a "pretty darn good" reciever, still at minimum cost for the Chatham Marconi, Cape Cod STEM classes. We are wondering if you would like to set up a forum group, for us to stumble around and experiment. I have set up a wspr beacon 11 ma fivw feet from a pico-sdr. This is very 21 year old Marconi like from the spring of 1895. He was using the best "toys" of his day, as are we. Bradshaw K1TE
mordae commented 2024-06-14 20:46:50 +02:00
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Hi, sorry for the late reply.

I don't really have the time to provide (and mostly importantly take care of) any kind of forum. It would be trivial to get started using e.g. Discord and see how that goes. Or use the Raspberry Pi forums. I would be willing to provide a virtual server or run the software stack itself if there are people who would help out, though.

As for any improvements, I think this design is just a fun experiment. Even if the PLL wasn't as jittery, biasing did not induce so much noise and components on the board did not radiate, the noise floor would be (with 300 MHz clock) at about -40dBm for 6.25 kHz bandwidth. I have attained -30 dB in my experiments. My hopes for it are home/garden automation and remote control for toys at best. WSPR requires super precise clocks, which is kinda expensive.

If you decide to host a Discord server (or anything else), send me a link and I'll gladly join and help you out as much as I am able to.

Hi, sorry for the late reply. I don't really have the time to provide (and mostly importantly take care of) any kind of forum. It would be trivial to get started using e.g. Discord and see how that goes. Or use the [Raspberry Pi forums](https://forums.raspberrypi.com/). I would be willing to provide a virtual server or run the software stack itself if there are people who would help out, though. As for any improvements, I think this design is just a fun experiment. Even if the PLL wasn't as jittery, biasing did not induce so much noise and components on the board did not radiate, the noise floor would be (with 300 MHz clock) at about -40dBm for 6.25 kHz bandwidth. I have attained -30 dB in my experiments. My hopes for it are home/garden automation and remote control for toys at best. WSPR requires super precise clocks, which is kinda expensive. If you decide to host a Discord server (or anything else), send me a link and I'll gladly join and help you out as much as I am able to.
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