Miniwhip is a PROBE for the electric field not an antenna. Conductive objects modify and reduce the electric field so it must be installed in free-space. So the miniwhip is sensitive only to the electrical component of the e.m. field: this is its main advantage because man-made structures or trees absorb the electric field much more than the magnetic one and therefore, if mounted correctly in free space (non-conductive pole of at least four meters) it will receive less disturbances than a small diameter loop or a long dipole and generally provides a higher signal/noise ratio. The original project is calculated to work conveniently from a few kilohertz up to about ten megahertz. An antenna to be defined as "long wire" and behave as such must be longer than one wavelength. 73s.
Supposedly has a design change in the front end filters for the newer ones, but I’m very happy with mine. No problems, works for me very well. I like the 330 too, very solid little unit. Thanks!
ok made it this far and not getting same results sudo systemctl enable meshtasticd --now i'm not getting the return message you have 22:03 WRDX849@MeshNet:~ $ journalctl -u meshtasticd -f Aug 24 11:20:47 MeshNet meshtasticd[3347]: INFO | ??:??:?? 10 SX126x init result -2 Aug 24 11:20:47 MeshNet meshtasticd[3347]: ERROR | ??:??:?? 10 Failed to find SX1262 radio Aug 24 11:20:47 MeshNet systemd[1]: meshtasticd.service: Main process exited, code=exited, status=1/FAILURE Aug 24 11:20:47 MeshNet systemd[1]: meshtasticd.service: Failed with result 'exit-code'. Aug 24 11:20:47 MeshNet systemd[1]: meshtasticd.service: Scheduled restart job, restart counter is at 150. Aug 24 11:20:47 MeshNet systemd[1]: Stopped meshtasticd.service - Meshtastic Daemon. Aug 24 11:20:47 MeshNet systemd[1]: Started meshtasticd.service - Meshtastic Daemon. Aug 24 11:20:47 MeshNet meshtasticd[3364]: Portduino is starting, HWID=1, VFS root at /root/.portduino/default Aug 24 11:20:47 MeshNet meshtasticd[3364]: Setting up Meshtastic on Portduino... Aug 24 11:20:47 MeshNet meshtasticd[3364]: Using /etc/meshtasticd/config.yaml as config file
Hi, doubt here, hope you can help. Do you see those lights turn on with human eye or just with the IR Filter as you shown? i want to put one outside but i want it to be discrete not a spotlight :)
Thanks for showing us how to do it but it was super annoying showing us the wrong way to do it multiple times first lol. I'm trying to follow along and do it and you're like just kidding that's wrong
I have no HAM background, so this helped calibrate my exceptions of how to get better signal with Meshtastic. If anything, it kinda sold me on the VNA and TinySA to make sure I'm getting what I paid for.
interesting, i made an air-choke for my cb antenna following 'G3TXQ Common-mode chokes' guide but would be interested to be able test how well it works.
I am using SDR Console....I wanted to use to track satellites. Using with RSPDX-R2. It works but I get no antenna selection. I have the SDR Play API installed and I added SDR Play in definition to "replace" but it it still shows an "unknown" device although it sees the serial number. Rebooted, replugged in device, same problem. Now after I restarted, it will no longer track frequency at all, it just stays on the same frequency I have to manually enter. Any suggestions? Tnx, I am new user to SDR Console, I like how it has the plugins built in to software.
@@fotografm Still can't get to show antenna ports. It is driving me bonkers. Tried plugging into USB hub and restarting but still no antenna selection. Tried deleting definition and reinstalling, reinstalled SDR Play API but it always shows "unknown device". It is starting to change frequency for some satellites but only a few.
Hey Simon, I have an issue that you might be able to help me out. I’m using my rak4631 with usb connection instead of bluetooth, but seems like the phone looses serial connection after some time, the phone seems to loose connection but the radio still operational, any idea of what could be happening?
Seems strange. My Android phones seem to make all sorts of random decisions on what to switch and which Wifi access points to select without informing me. There is probably not much that we can do about "decisions" like this.
Nice new practical take on RF - great to see the demonstration of interference fringes and polarization. Would have been interesting to see the effect of ground planes and where possible a reflector. Thanks.
@@fotografm Thanks, I dug out an old (very old) lenovo laptop I had. Your video got me up and running on Linux Mint Xfce. I might try on an R-pi at a later date if the BBS gets enough use to justify it. Thanks again!
as you say, arguably can be written off the sma's that can be upcycled for other projects... Not sure who got the video out first re these, you or Any Kirby as youtube says both were 4 months ago. Cheers
"loved your drumming work!" First reaction when I saw the 239 connecter in the placeholder in conjunction with Meshtastic I had bit of a raised eyebrow moment, but "what was at hand" ... I'd have done same. Amazon sell 5 packs of similar configuration chassis SMA for 16quid. "Superbat SMA Connectors SMA Female 4 Holes Panel Chassis Mount Flange Solder Cup Connector SMA Bulkhead Connector 5-Pack" Chuckled when you showed your fave' antenna, at first glance it was very similar (but not the same as) Andy Kirbys dodgy one - the youtube placeholder pic says it all :- ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Y4qXn_gOTY8.html Good video, many thanks for sharing dude.
In the end I moved away from loops completely and switched to base loaded mobile whips from Diamond. They receive far stronger signals and also radiate much better than the loops I was experimenting with.
I have old Ubuntu on orange pi lite. Can I install this bbs on it, too? Then I just connect a Heltec or waveshare+pi pico board via USB, with meshtastic on it, and it should work?
This was a great three-part analysis. I have one of those popular and "MLA-30+ (Plus)" active magnetic loop receiving antennas. It comes with a 10 meter-long cable permanently fixed inside the potted circuit box. Now after seeing this third part, I'm wondering how much the cabling influences the MLA-30+'s receiving qualities. Maybe that antenna is an idea for your video backlog; I'd be great to see you give it a thorough review.
17:57 maybe plus-minus mistake? (assuming the "tinySA Ultra" shows correct values): with the receiving "tinySA Ultra" showing 10.1 dBm, and cable attenuation at 1 dBm, the sending side provides 11.1 dBm; but the sending "tinySA" is configured to send at 9.0 dBm. So it seems the "tinySA" is actually sending with more energy than what is configured.
5:10 besides the signal-generating NanoVNA-F v2, the signal-receiving SDRplay RSPdx could also contribute to the frequency measurement being off by what is specified on the sending side.
I don't recall seeing any special firmware requirements but for the record I'm running 2.3.13 (latest beta). I was testing using the RPi Chromium browser to remote update my device.
Using your video I was just able to get this running on a Rasperberry Pi 4B running the latest Debian Bookworm. Using a Heltec V3 via serial at the moment but I'd like to use TCP/IP and connect to my TBeam router on the roof.
Brilliant! The whole "Citizen's Band" chat thing is interesting but the BBS functionality will elevate this to a proper information service. I was a BBS user back in the 1980s starting at 300 baud. In those days, an Apple ][ with a 20 meg hard disk made for a plenty capable host. Today an RP2040 with a tiny uSD card should be able to fill that role.
