August 8, 2021 conducted a practical verification of APRSD workroid и BaOFENG UV-5R in Victory Park.

GPS transmission coordinates at first with Smart Beaconing, но я быстро разобрался, что более подходящий вариант для пешей прогулки - отправка координат по таймеру, каждые 3 минуты. Почему так часто? Дело в том, что до APRS шлюза доходит примерно 1/2 messages.

The low location of the radio station is affected (it was in the pact, and the smartphone in the hand). Power by 144.800 MHz had to be raised to 5 watts.

The volume when transmitting on a smartphone to the maximum, at a reception at the station - also the maximum volume (for APRS cable bought on Aliexpress).

The largest number of neighboring APRS radio stations accepted by the air are four.

My position in real time was displayed on the site aprS.Fi.

Advantages APRSD setroid + Baofeng UV-5R + кабель: низкая цена по сравнению с d-Star (так как радиостанция аналоговая) и совместимость со стандартом APRS.

Disadvantage : It is impossible to use the radio station while the smartphone is connected to it. Since the VOX mode is used in the radio station, the "do not disturb" mode should be turned on on the smartphone.

Also, the experiment I conducted showed that it is necessary to wear a second radio station in order to be able to conduct QSO, because in APRS messages the frequency for communication is transmitted, in this case 145.500 MHz.

Map with track :

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