Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 19-07-2017, 12:10   #1
Registered User

Join Date: Apr 2011
Location: Cambridge MD
Boat: Carter offshore 35
Posts: 350
dAISy

Anyone try this yet?
__________________

DeborahLee is offline   Reply With Quote
Old 19-07-2017, 17:22   #2
Registered User

Join Date: Mar 2016
Location: Lake Erie Islands
Boat: 1987 Hunter 35 Legend
Posts: 3
Re: dAISy

I have the small one and it works great picking up the targets around us for around 10 miles here on Lake Erie. I am connecting to my laptop with usb. If I were to do it again I would get the duel channel one that has you can connect to a multiplexer or usb
__________________

dnplmr is offline   Reply With Quote
Old 19-07-2017, 17:41   #3
Registered User
 
rgleason's Avatar

Join Date: Mar 2012
Location: Boston, MA
Boat: 1981 Bristol 32 Sloop
Posts: 12,038
Re: dAISy

The dual one is for Raspberry pi only, but it works well. Opencpn runs on linux on rpi3
rgleason is online now   Reply With Quote
Old 19-07-2017, 19:05   #4
Registered User

Join Date: Sep 2010
Location: Florida
Boat: Pearson 35
Posts: 62
Re: dAISy

They have a dual ch stand alone unit as well as the dual ch RPi hat version.

For sailing in any kind of traffic, I would not have a single channel receiver. I'm surprised anyone still sells a single channel unit. That is one of the issues for those using an SDR AIS receiver. Of course you can always hang two SDR dongles.
waterman480 is offline   Reply With Quote
Old 20-07-2017, 01:34   #5
Registered User

Join Date: Nov 2015
Location: Ireland
Posts: 214
Re: dAISy

There are now several drivers available for an SDR dongle that monitor both channels simultaneously. One example (and one that I have used) is aisdeco2 at http://xdeco.org/.
AedanC is online now   Reply With Quote
Old 23-07-2017, 05:53   #6
Registered User
 
rgleason's Avatar

Join Date: Mar 2012
Location: Boston, MA
Boat: 1981 Bristol 32 Sloop
Posts: 12,038
Re: dAISy

Yes dual is better. The single channel should not be ruled out however, it works fine and does the job, but for $30 more I'd pock the dual. Adrean S. builds a good product and is responsive to user questions.

https://www.tindie.com/products/astu...ith-nmea-0183/
rgleason is online now   Reply With Quote
Old 23-07-2017, 07:20   #7
Registered User
 
TheOffice's Avatar

Join Date: Jun 2012
Location: Annapolis
Boat: Hylas 44
Posts: 685
Re: dAISy

Works great!
TheOffice is offline   Reply With Quote
Old 24-07-2017, 08:15   #8
Marine Service Provider

Join Date: May 2013
Location: Norway
Posts: 670
Re: dAISy

I have seen reception distance close to 190 nautical miles under good conditions from a elevation of 25 meter and a Comrod AV15 antenna using the dAISy aishat on a raspberry pi.

the last month, average reception distance was 36 nautical miles and covering an area of 5099 km2 - Have used also the single channel dAISy, I can confirm that it works great, but the dual channel is better. Be sure to use a good quality coax and a decent antenna like the Comrod AV15.

Quote:
Originally Posted by TheOffice View Post
Works great!
Attached Thumbnails
Click image for larger version

Name:	Fulehuk1(1).PNG
Views:	74
Size:	379.7 KB
ID:	152544   Click image for larger version

Name:	Fulehuk2.PNG
Views:	66
Size:	171.6 KB
ID:	152545  

petter5 is online now   Reply With Quote
Old 24-07-2017, 09:55   #9
Registered User
 
Auspicious's Avatar

Join Date: Jun 2003
Location: Chesapeake Bay
Boat: HR 40
Posts: 1,962
Send a message via Skype™ to Auspicious
Re: dAISy

Quote:
Originally Posted by petter5 View Post
I have seen reception distance close to 190 nautical miles under good conditions
That's almost certainly tropospheric ducting that while common, especially in northern latitudes is not reliable or predictable. 30ish nm from a sailboat with a high antenna to commercial traffic is dependable. Use good coax and good connectors.
__________________
S/V Auspicious
AuspiciousWorks
Beware cut and paste sailors
Auspicious is offline   Reply With Quote
Old 24-07-2017, 10:14   #10
Marine Service Provider

Join Date: May 2013
Location: Norway
Posts: 670
Re: dAISy

I know that reading of 190 nm was during foggy conditions - anyway you don't need AIS reception distance of 190 nm, but the average 36 nm reception distance over a month shows that the dAISy (hat) receiver is sensitive enough to plot even long distance AIS targets dependable when fitted to a decent antenna.
petter5 is online now   Reply With Quote
Old 24-07-2017, 14:13   #11
Registered User

Join Date: Jul 2010
Location: Kalamata, Greece
Boat: Amel Sharki
Posts: 1,866
Re: dAISy

Quote:
Originally Posted by petter5 View Post
I know that reading of 190 nm was during foggy conditions - anyway you don't need AIS reception distance of 190 nm, but the average 36 nm reception distance over a month shows that the dAISy (hat) receiver is sensitive enough to plot even long distance AIS targets dependable when fitted to a decent antenna.
As said by Auspicious that is tropospheric ducting and has nothing to do with foggy conditions nor is it a sign of a good receiver.
See more about tropospheric ducting here:
Tropospheric Ducting Forecast for VHF & UHF Radio & TV

Gerhard
CarCode is offline   Reply With Quote
Old 24-07-2017, 14:19   #12
Marine Service Provider

Join Date: May 2013
Location: Norway
Posts: 670
Re: dAISy

Well, it's also visual. If you look outside and it's heavy ocean fog, you regulary see increased reception distance.

Compared to a Kongsberg AI180 class A ais, when used on the same antenna, the dAISy (raspberry AIS hat) the dAISY does pretty well so the sensitivity for the reciever is absolutely fine.
Quote:
Originally Posted by CarCode View Post
As said by Auspicious that is tropospheric ducting and has nothing to do with foggy conditions nor is it a sign of a good receiver.
See more about tropospheric ducting here:
Tropospheric Ducting Forecast for VHF & UHF Radio & TV

Gerhard
petter5 is online now   Reply With Quote
Old 25-07-2017, 01:06   #13
Registered User

Join Date: Jul 2010
Location: Kalamata, Greece
Boat: Amel Sharki
Posts: 1,866
Re: dAISy

Quote:
Originally Posted by petter5 View Post
Well, it's also visual. If you look outside and it's heavy ocean fog, you regulary see increased reception distance.

Compared to a Kongsberg AI180 class A ais, when used on the same antenna, the dAISy (raspberry AIS hat) the dAISY does pretty well so the sensitivity for the reciever is absolutely fine.
You may trust your personal feelings, I believe more in science-based facts.
Sensitivity is measured e.g. in dBm.

Gerhard
CarCode is offline   Reply With Quote
Old 31-07-2017, 11:40   #14
Registered User

Join Date: Jul 2017
Posts: 7
Re: dAISy

Yes, just installed a 2+. Attached it to a vYacht router, adjusted the input port to the correct baud rate and it worked.
RHarriss is offline   Reply With Quote
Old 28-02-2018, 20:46   #15
Registered User

Join Date: Feb 2012
Location: Canada
Boat: Beneteau First 47.7
Posts: 12
Re: dAISy

All: I am interested in adding AIS to my setup based on a RaspPi3 and OpenCPN.

I like the look of the dAISy HAT for the RPi.

My question is what are people using for the antenna? A splitter on the VHF antenna? A dedicated antenna? Trying to understand the required installation.

Many thanks.
__________________

jacrider is offline   Reply With Quote
Reply

Tags
ais

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
dAISy Open Source AIS Receiver travellerw Marine Electronics 53 16-07-2018 18:54
OpenCPN not seeing dAISy output Lomax OpenCPN 46 14-12-2016 23:23
dAISy Mini-AIS Receiver lockie Navigation 3 23-11-2016 09:29
lighting up the daisy qwert Marine Electronics 0 09-08-2016 23:52
Daisy Sail perchance Deck hardware: Rigging, Sails & Hoisting 0 15-07-2011 18:11



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 07:33.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.