MSGID: 2:310/31 5ff30f0a   
   CHRS: LATIN-1 2   
   TZUTC: 0100   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   Hi All!   
      
   I bought some amateur radio measurement tools, and thought you might be   
   interested.   
      
   A NanoVNA v2   
   A really, really cool Vector Network Analyzer from 50 kHz to 3 GHz.   
   (attention there is a v1 that can reach only 900 MHz and is slightly worse)   
   It has 2 SMA jacks. 1 for output and measurement of reflected power, and the   
   other for input.   
   So you connect an antenna to port 0 and measure SWR for example.   
   Or you connect a filter between the 2 ports and measure its characteristic.   
   The NanoVNA has a tochscreen and batteries and costs around 50 USD.   
   It can also be used with a PC program, so that you see the diagrams on the big   
   monitor.   
   https://nanorfe.com/nanovna-v2.html   
      
   A TinySA   
   A Tiny Spectrum Analyzer.   
   It is a bit of a toy, but a very interesting one.   
   Very similar to the NanoVNA as it comes with its own touch screen and battery.   
   Costs arounf 45 USD.   
   https://www.tinysa.org/wiki/   
      
   A "USB LTDZ 35-4400M"   
   That is really a toy.   
   A small USB PCB that needs a PC program.   
   A spectrum analyzer and tracking generator for 35 MHz to 4.4 GHz   
   It is not very sensitive. (USD 30)   
      
   A "jumbospot MMDVM hotspot"   
   Actually I have the big version with 2 radios. (only really needed for DMR I   
   think)   
   But the above single radio version with shell costs 25 USD on Aliexpress.   
   You need a Raspberry Pi (Zero) to use it.   
   It adds a radio and small display and can act as a DMR/D-Star/Yease   
   Fusion/NXDN hotspot and a POCSAG pager sender.   
   You can install pi-star on the RPi and add the radio onto the GPIO ports.   
   During lock down I had some time to play with it again, and it works just   
   GREAT!   
   https://www.pistar.uk/   
      
   CU, Ricsi   
      
   ... Time may be a great healer, but it's also a lousy beautician.   
   --- GoldED+/LNX   
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