Differences

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--- 2m0iig-ads-b-journey [2022/11/06 15:56] – [6th November 2022] 2m0iig
+++ 2m0iig-ads-b-journey [2022/11/10 09:15] – 2m0iig
@@ Line 181: / Line 181: @@
 Well then. It’s been a shitty week for the project. The crashes and corruption got to the stage where I genuinely couldn’t log in via SSH. Like, I’d connect and the window would immediately close after it processed my login. Something was toast. So I dug out a spare 8 gig card and set it all up from scratch.
-I haven’t overclocked it at all, because I’m terrified that’s what did it in before, but I can definitely tell that I haven’t done it. Actually that’s a lie, I did it once and it crashed very quickly. Grr. The CPU temp is lower though without the overclock. I’ve also taken the lid off the Zero’s case and the temp dropped a few C. Nice! I don’t think it needs to be covered in the position it is in, so I’m leaving it off for good. I’m honestly going to just skip the overclocking. It’s not worth the hassle.
+I haven’t overclocked it at all, because I’m terrified that’s what did it in before, but I can definitely tell that I haven’t done it. Grr. The CPU temp is lower though without the overclock. I’ve also taken the lid off the Zero’s case and the temp dropped a few C. Nice! I don’t think it needs to be covered in the position it is in, so I’m leaving it off for good. I’m honestly going to just skip the overclocking. It’s not worth the hassle.
-I am pretty sure we can leave this diary here, although I did just start working on an 8 segment antenna, because I am a glutton for punishment.
+I am pretty sure we can leave this entry here, although I did just start working on an 8 segment antenna, because I am a glutton for punishment.
+==== 7th November 2022 ====
+Oh my, the 8 segment version is fantastic! I put it outside and set it up at a similar height, but with more open coverage to the north, previously blocked by my house. I gained two more planes that the 4 segment antenna didn't receive. Very encouraging. I need to get it in some conduit and maybe install it full-time, but it is a fairly long cable run so that has to be considered too. Maybe time to invest in a pre-amp and a bias-T board.
+We've also started overclocking again, because I am a glutton for punishment. Slight changes each time, without going overboard. Seems stable so far. I'm learning a lot about the voltages for the ARM/Broadcom chips, that's for sure. In preparation for doing this I also decided to stick a crappy 5V fan that I rescued from an old netbook to the top of the RTL-SDR stick, with the exhaust pointing right at the Pi Zero. The result was a ridiculous 10 degree Celsius drop. It's the most shonky setup ever, held on with Blu Tack (not sure if that is the best thermal transfer material...). It's plugged into the Pi's GPIO pins, 5V and GND, and I'm honestly over the moon with the result.
+Finally I adjusted the antenna outside to make it a bit more straighter and not slanting to one side a tiny bit. I don't know how much difference that will make, because signals from the planes are pretty strong anyway, but it can't hurt to make it perfectly vertical. The mount I'm using is already slightly bent so I'm having to accommodate for that.