HackRF One SDR
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Amateur Radio
Initial test of Jim's N2ADR wifi Buffer.
Installed on Raspberry Pi 1 with USB wifi dongle(s) following these instructions from Github...
https://github.com/jimahlstrom/HL2WifiBuffer
All current testing is on my LAN.
As the R-Pi 1 does not have wifi, I tested both of these dongles, results were disapointing, with stuttering in Quisk and unuseable with Thetis. Both are designed for R-Pi and are 'plug n play' in Raspbian. The R-Pi was only about 6 feet/2 metres away from the wifi router in my shack.
As always, click any image to go SUPERSIZED!
How to run multiple instances of Thetis or simply segregate multiple installs.
Raspberry Pi4 running Quisk and WSJT-X connected over the network to my Hermes-Lite 2 as a WSPR transmitter and receiver. I use VNC viewer to connect to the R-Pi remotely as it's running headless.
Quisk is really useful as it creates a pair of 'virtual audio cables' for digital modes making it very easy to link to WSJT-X as audio is otherwise a nightmare in Linux.
I've left it running 24/7 for a couple of days.
Can only get the power down to 0.5W on the HL2 but have also connected the R-Pi to my Radioberry and with no PA connected it only produces ~10mW, but still getting spots on every continent.
Antenna is a 1/4 wave vertical for 40m used for 15m as well. I guess the antenna works quite well.
Amazing what you can do on the 'grey line' - the difference is night and day!
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K3NG keyer using boards by UN7FGO and an Arduino Nano
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I ordered a set of boards via JLCPCB in China (5 of each board for ~£21 delivered)
Main board
https://oshwlab.com/UN7FGO/K3NG_KEYER_V2_1
Control board
https://oshwlab.com/UN7FGO/K3NG_EXT_PANEL_2
Front & back panels
https://oshwlab.com/UN7FGO/K3NG_PANELS_CHINA_PROFILE
The schematics in the above links will give you the components needed to complete the keyer.
Obviously some of the components can be omitted from the main board PCB as they are reproduced on the control board PCB.
My case came from Amazon UK but can also be found on other sites
https://www.amazon.co.uk/dp/B098TNTGFP
All other parts came from my parts stock or from Amazon/ebay etc.
https://www.amazon.co.uk/dp/B07FXXPGKM
https://www.amazon.co.uk/dp/B07SSLZX77
https://www.amazon.co.uk/dp/B008DS11IQ
https://www.ebay.co.uk/itm/125216704009
The recent development of Quisk allows for remote operation of supported SDR radio's - that could be at the end of your garden using wifi or some completely remote station in another location.
The bandwidth requirement is around 55Kb/s, which is quite small for an ethernet operated SDR.
I run the Quisk remote 'server' on a Raspberry-Pi 3 hooked to a Hermes-Lite 2 (HL2) and another instance of Quisk as the Control Head (Client) running on a Windows laptop or PC.
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Below is a rough schematic of how I plan to run a fully remote station when I can find a suitable site.
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Having recently had a solar 'home island' installation at my home, I'm going to document things here, warts and all.
I chose my supplier as they were local and appeared to have a good reputation, plus the equipment supplied is of European manufacture, as opposed to no-name Chinesium.
Home islanding means the ability to be 'off-grid' via a battery system that is charged by the 14 solar panels on the roof, which charge the batterys and can at the same time provide mains power to the home.
Plus, when the batteries are full, the system will put the excess energy back into the grid, thereby earning me some money.
In the event of mains grid failure, the system automatically and seamlessly powers my home from the batteries, providing of course there is suffiient charge in the battery bank!
The system works pretty much 'as advertised' - but as a licenced Radio Amateur, my worst fears have been realised.
I am liasing with my supplier in an attempt to mutually rectify the horrendous 'noise' this system creates across the whole of the HF spectrum during daylight hours, rendering my hobby almost unusable from dawn to dusk.
More to come....