Friday, September 27, 2024

APRS 144-145 MHz transceiver v2


 Designed by Robert PA2RK and published on PI4RAZ 

This transceiver can be build with a DRA818 and ESP32 as basis.

Locater via build in gps 

Contains preprogrammed repeater frequencies for the Netherlands

Configuration can be done via build in webserver, a quite easy and flexible way to change settings or parameters.

The aprs beacon works via rf and if availble wifi as well.

Nice and easy kit to build, see www.pi4raz.nl where you also can order the 2 pcb’s.

Touch display and DRA818 can be ordered at several Chinese webshops or ebay.


Updates from the shack.


Last year i sold my nanovna and replaced it with this nanovna-F v2

This unit has a solid enclosure, very clear screen and range till 3GHz.

A very nice pice of equipment for an affordable price.



From an estate i got this famous Yaesu FT-7 qrp transceiver from the seventies.
It’s still working fine, but i decided to perform a mod on the rx amplifier in order to reduce the gain which was too high. Mod can be found on PA0FRI website : www.pa0fri.com
Since this transceiver is modular build, it’s easy to take out pcb’s for service purposes.




 Also from the same estate i got this Bird 43 wattmeter which is almost like new.
Several slugs to swap for other power and or frequencies.
Very nice additions to my shack!