Re: [digitalradio] Re: USB Sound Card

2006-09-03 Thread Darren Long
Hi, I can't give you any info, but would appreciate hearing how you get on. Soundmodem ax.25 on the NSLU2 is one of my future projects, but as current projects keep slipping to the right, I've got nowhere near looking at it. Darren, G0HWW On 31 Aug 2006, at 17:43, Jeff Stevens wrote > Hel

Re: [digitalradio] Delay Tolerant Networks for amateur radio.

2006-08-26 Thread Darren Long
Hi again, Sorry for replying to my own post, but I've just found this new-ish article on the IEEE Computer Society site which may make the topic more accessible: http://www.computer.org/portal/site/dsonline/menuitem. 3a529f3832e8f1e13587e0606bcd45f3/index.jsp? &pName=dso_print_only&TheCat=&

[digitalradio] Delay Tolerant Networks for amateur radio.

2006-08-25 Thread Darren Long
Hi all, After having read some of the recent thread which discusses the robustness of the internet and amateur messaging mechanisms, I'd like to post a link to the the Delay Tolerant Networks Research Groups web- site (www.dtnrg.org) and encourage any interested persons to take a look at th

Re: [digitalradio] Emission types

2006-08-07 Thread Darren Long
Me again, I've just wondered about something. Which, if any of the modes/ modems supported by gmfsk.hkj.51 can support transmission of binary data, or do they all have support for only a limited subset of octet values? Sorry if this is drifting further off topic. Darren, G0HWW On 7 Aug 20

Re: [digitalradio] Emission types

2006-08-07 Thread Darren Long
Hi, I'm interested in using gMFSK like this too, but for a different reason. I built the HKJ variant with the WANT_MAILBOX macro defined but the echo trick didn't seem to be working for me. It appears that it is also necessary to create a file called PSKmailclient in the home directory too,

Re: [digitalradio] Sending JPG Files

2006-08-06 Thread Darren Long
Hi Jim, Hampal, based on the DRM waveform may be a good bet. Its supports JPEG-2000 compression and progressive display using the Irfanview plug-in. It supports an ARQ-like mechanism too, using Bad Segment Requests. It's well worth a try, although it has been a while since I used it, so

Re: [digitalradio] software for digital modes MAC and LINUX

2006-07-12 Thread Darren Long
Hi Joaquin, For Mac, try http://www.machamradio.com/index.html. Cocoa-modem is the best digi-mode app around for OS X. Xastir is great for APRS. For Linux, the 0.7pre version gMFSK is probably the best thing going at the moment, covering Olivia and CW in addition to the usual suspects (ps

Re: [digitalradio] MFSK/Olivia - sources released under GPL

2006-04-24 Thread Darren Long
Actually you gave me an idea.  I tried running gMFSK via a remote X  session from my iBook.  It seemed to work OK,  but the waterfall  display was struggling and the wifi bandwidth utilisation was pretty  high.  I'm going to try and get FreeNX running on Ubuntu, and see if  that fares better

Re: [digitalradio] MFSK/Olivia - sources released under GPL

2006-04-23 Thread Darren Long
Hi,Can we just compile this into the latest release of gMFSK, or isn't gMFSK built like that?Darren, G0HWWOn 22 Apr 2006, at 22:04, Pawel Jalocha wrote: It is my pleasure to annonce that the MFSK/Olivia source code is released under GPL and can be dowwnloaded from: http://homepage.sunrise.ch/mys

Re: [digitalradio] Digital SSTV? More on Hampal

2006-01-13 Thread Darren Long
Hi all, You can try using progressive decoding with Hampal and some other DRM based apps. This means that reception of a JPEG-2000 compressed JP2 file is not an all-or-nothing affair. You can view the image at various degrees of quality and resolution as it is decoded on the fly. This m

Re: [digitalradio] Digital SSTV

2006-01-13 Thread Darren Long
The WAV format isn't significant for interoperability purposes.  It's just a way of formatting input and output to/from the sound card in order to get it to work as a modem.  This needs to be done without using a compressed audio format which would degrade the signal to noise ratio on send and re

[digitalradio] Best add-on filter for FT-817 for digital modes.

2005-09-30 Thread Darren Long
Hi all, I've just renewed my licence after a long lapse of 15 years or so. I intend to get an FT-817 for QRP portable HF working digital modes, mainly. I have an Apple iBook G4, so will likely get a signalink and an iMic to use with CocoaModem, and other modes/apps as and when they get p