Информация о материале
Родительская категория: Заметки
Категория: Лаборатория
Просмотров: 77
Звезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активна
Collect:
1.https://www.researchgate.net/profile/Loizos-Kanaris/publication/315839931_Fusing_Bluetooth_Beacon_Data_with_Wi-Fi_Radiomaps_for_Improved_Indoor_Localization/links/58eb6ce24585153b60c95e13/Fusing-Bluetooth-Beacon-Data-with-Wi-Fi-Radiomaps-for-Improved-Indoor-Localization.pdf?origin=publication_detail
2. https://lora-alliance.org/lora_products/abeeway-micro-tracker/
3. https://www.u-blox.com/en/blogs/tech/ultra-low-power-gps-u-blox-m10 (ULP GPS)
4. https://eu.mouser.com/new/maxim-integrated/maxim-max2769c-receiver/ (ULP GPS)
5.occupancy detection https://www.thethingsnetwork.org/device-repository/devices/elsys/ems-desk/

Информация о материале
Родительская категория: Заметки
Категория: Электроника / cхемотехника
Просмотров: 69
Звезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активна
1. POWER AMPLIFIER
a. 144MHz Gain 24dB DC 5V Ultra Low Noise Amplifier LNA SMA-K Connector Module (30 dB), 10mW
b. MMZ09332BT1 RF Amplifier, InGaP HBT, 2 Stages, 130MHz to 1000MHz, 30db Gain, 3V to 5V, HVQFN-12
c. https://www.mouser.in/datasheet/2/976/CMX902_ds-1591679.pdf
d. https://www.mouser.in/datasheet/2/609/643120f-1271368.pdf (max gain close  needed F., 0.15W)
e.https://www.mouser.in/datasheet/2/976/CMX901_ds-1591670.pdf   (temperature dem - more power in lower T)

Информация о материале
Родительская категория: Заметки
Категория: Лаборатория
Просмотров: 69
Звезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активна

https://swarm.space/
https://www.sigfox.com/en/coverage
tracking:
https://tracker.habhub.org/#!mt=roadmap&mz=7&qm=1_day&mc=51.57655,2.02663&f=icspace17&q=icspace17
https://ttn-slsp2020.gospace.sk/LoRaWanBalloon/01_map.php

Baloon:
eval:
https://www.thethingsnetwork.org/forum/t/balloon-tracking-using-ttn/33928/6
https://www.thethingsnetwork.org/labs/story/tracking-a-stratospheric-balloon-with-iot

Iridium : https://www.iridium.com/products/iridium-9603/

http://www.aprs.org/aprs-messaging.html

ARPS:
APRS must work everywhere to be a true resource to the mobile ham radio operator. In North America, 144.39 MHz is dedicated throughout the continent. In Europe, use 144.80 and in Australia use 145.175 MHz..
http://www.aprs.org/
https://hackaday.com/tag/aprs/

https://hackaday.com/2015/03/24/aprs-tracking-system-flies-your-balloons/

AMSAT
https://www.amsat.org/wordpress/xtra/Getting%20Started%201.pdf
https://www.youtube.com/watch?v=AaquOMPkf3Y

PICO ARPS
https://www.google.com/search?q=DB1NTO+PicoARPS&rlz=1C1GCEA_enDE974DE974&oq=DB1NTO+PicoARPS&aqs=chrome..69i57.5276j0j7&sourceid=chrome&ie=UTF-8

AVRT5 APRS Tracker VHF with GPS/Bluetooth/Thermometer/TF Card Support APRSdroid
https://www.eham.net/reviews/view-product?id=13407
(I came across this device last year online, took the chance and purchased one. After reading the forums and seeing several others having problems with the USB interface, I noted the following:

- The device comes with a USB cable that has compatibility problems with Win10 (WinXP is better)
- users *MUST MUST first upload the firmware to the device before it will boot. This is a case of RTFM, and requires the USB cable (above) to work correctly.
Once you overcome these initial hurdles, it does work great! Simple, accurate, and extremely useful.
I have used this running 1W and a 5/8w on the roof of the car, with pretty decent results around South Texas. I added a 25w 2m amp to it I purchased used at a hamfest, and have experimented with both a 1/4w and 5/8w magmount with excellent results with daily use and for public service events. This unit has an internal battery that will run for several hours, but using a Mini-USB cable and 12v adapter it will run indefinitely. There are a few people on the forums who have replaced the expired battery with a set of electrolytic capacitors with good results.

Also, for high altitude balloon launches, there is a modification available for altitude limitations.)


https://www.byonics.com/microtrak

Must read book about ARPA: https://digitalcommons.calpoly.edu/cgi/viewcontent.cgi?article=1156&context=eesp copy
 




 

Информация о материале
Родительская категория: Заметки
Категория: Лаборатория
Просмотров: 70
Звезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активна
1. Download and install National Instruments 2021 SP1 64-bit runtime and NIVISA
2. Download and install NanoVNA Solver 64
3. Install NI-Serial driver (https://www.ni.com/cs-cz/support/downloads/drivers/download.ni-serial.html#442809)


4. Install NI-VISA (https://www.ni.com/cs-cz/support/downloads/drivers/download.ni-visa.html#442805) (optional)

Информация о материале
Родительская категория: Фотогалерея
Категория: Лаборатория
Просмотров: 64
Звезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активнаЗвезда не активна
https://www.multi-circuit-boards.eu/en/index.html (from 0.3mm pcb)
https://www.circuit-boards.eu/calculator/   (from 0.4mm pcb)
  1. Оплодотворение 3D анимация
  2. Save money, build you LoraWAN antenna yourself!
  3. Antenna matching circuitries
  4. Measuring batteries condition with a professional battery tester