This forum uses cookies
This forum makes use of cookies to store your login information if you are registered, and your last visit if you are not. Cookies are small text documents stored on your computer; the cookies set by this forum can only be used on this website and pose no security risk. Cookies on this forum also track the specific topics you have read and when you last read them. Please confirm whether you accept or reject these cookies being set.

A cookie will be stored in your browser regardless of choice to prevent you being asked this question again. You will be able to change your cookie settings at any time using the link in the footer.

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
SDR and wefax
#1
Has anyone gotten wefax to work with openplotter using rtl-sdr? Is there a reason the weather fax plugin for opencpn is not part of openplotter? Is the AIS radio in the moitessier hat tunable?


Thanks

Sent from my SM-G920P using Tapatalk
Reply
#2
(2020-03-20, 04:23 PM)Josacraw Wrote: Has anyone gotten wefax to work with openplotter using  rtl-sdr? Is there a reason the weather fax plugin for opencpn is not part of openplotter? Is the AIS radio in the moitessier hat tunable?


Thanks

Sent from my SM-G920P using Tapatalk

I think someone got wefax, we will add an app for SDR-VHF and another one for SDR-HF (weatherfax)

istalling opencpn plugins is easy, just one click so we do not include any plugin by default.

What tunable means? you cant not get voice radio. What do you want to change? install the moitessier app and you will see the options. You can even simulate AIS reception.
Reply
#3
(2020-03-20, 07:59 PM)Sailoog Wrote: What tunable means? you cant not get voice radio. What do you want to change? install the moitessier app and you will see the options. You can even simulate AIS reception.

I meant is it possible to change AIS receiver on the hat to other frequencies. It would require an antenna splitter to do both with the hat sdr so perhaps it would be more sensible to use a separate usb rtl-sdr for wefax reception.

My only experience with wefax involves receiving with gqrx and piping the audio to fldigi with pulseaudio. Can the opencpn plugin simplify this and take the place of fldigi?

Thanks

Sent from my SM-G920P using Tapatalk
Reply
#4
I don't think the radio on the moitessier hat is tunable but I could be wrong.

With rtlsdr and dvb-t dongle you can tune but HF frequencies are difficult.

I used a board called an upconverter which makes reception possible but the result (using weather fax plugin) was slightly worse quality than $40 ssb receiver tecsun 600. In both cases I did not use a sufficient antenna but weather maps were readable.

So it is possible. Let us know your results and also very interested in direct mode which allows HF reception without upconverter (But even worse quality??)
Reply
#5
moitessier HAT is not an SDR receiver, it is a dedicated AIS receiver. You can play with some options but you will get only AIS data.
Reply
#6
Any tips on getting the wefax signal using gqrx? I'm using the rtl-sdr v3 with a 30 foot length of cat5 cable strung up in a tree. The wire is plugged into the center pin of SMA jack. The Boston wefax is the closest to me at about 900 miles. Gqrx is set USB mode with everything else default. I see a signal spike at 12748.1khz but only hear static. I've also tried the new Orleans station which is about equidistant. I have looked into various shortwave antenna styles but effectively they are what I have done. Maybe I'm just to far away? I have tried night time as well knowing you should get better reception then. The sdr is definitely working as can pick up local FM stations no problem.

I can also pick up a series steady tones from low to high at the frequencies just below at 12746 and lower

Thanks

Sent from my SM-G920P using Tapatalk
Reply


Forum Jump:


Users browsing this thread: 1 Guest(s)