Hi there. I have some informations for HA-102 owners:
1.) if you have some issues with AIS transmission
- you may have the same issue like me: frequency of the transmitter is not accurate. My is 161.972,5 and 162.022,5kHz. Thats mean that some AIS receivers has problem with receive your signal right! for example RTL-SDR AIS is not able to receive it at all. It has many CRC and other errors. But my older dAISy AIS receiver is able to receive my signal propperly. Now I am trying to communicate with the seller - so we will se -he looks that he realy want to help me with it.
2.) about connecting to the other NMEA
equipments - i check the cable and HA-102 transponder and little bit scare abou RS-422 connections:FYI - 9 PIN serial
connector has 3 PINS - GND, TX, RX. TX and RX are at paralell connections (INSIDE) to the external cable (white and orange wires),violet, gray and yelow wires of the cable are not connected inside the transmitter! so thats mean that only green, blue and brown left and that is not enought for dual RS422 (two wires for each chanel ((+ and -))). May be one RS422 only and second RS232
TX on GREEN for GPS
The descriptions at the manual are wrong.
RS 232 sending AIS and GPS
I found that sometimes transmitter indicate transmitting by RED LED, but my RTL SDR radio
says nothing..no signal!
What is amazing is AIS receivers sensitivity - perfect.