(2021-04-23, 01:53 AM)Josacraw Wrote: After a long hiatus I am revisiting this concept. Turns out wefax reception is very poor when you live in a wooded area so I moved to an area with clear sky. I've been able to record and decode transmissions on my laptop using gqrx and fldigi.
I have been far less successful on openplotter using the same antenna and sdr. The reception is just so much worse! It helped to move the sdr from a usb hub to a directly into the pi. I've also tried using a 3 or so foot dongle cable to get a little distance. I can receive images but they are very poor.
I have yet to get the opencpn plugin to receive anything(by that I mean it returns a lightly staticed white image). I added the direct sample flag to the rtl_fm command under the scheduler tab and set the upconverter offset to 0 since I'm using a v3 rtl-sdr. Is there something else I'm missing?
Thanks!
Perhaps it would help to turn off the ais sdr on the moitessier hat while receiving?
This is good info. Thanks for posting. I’ve not gotten there yet, but a version 3 is on my list, as I have a Ham it Up and it’s about worthless.
Over on the OpenCPN forum I had the discussion with Sean, the programmer of the Weatherfax plugin and he did program it to work with an SDR but didn’t have one to test, so it’s possible that is might work. See here: https://www.cruisersforum.com/forums/f13...49387.html post #7.
BTW, I know nothing about this, but am trying to figure it out. My plan, if it would work, is to use a balun to attach my built in ground plain and my isolated back stay antenna. Then just let the plugin tune the dongle and receive faxes at it’s leisure right into OpenCPN. Obviously that’s overly simplistic (it’s a boat after all), but it is my ideal scenario.