Re: [digitalradio] automatic signal identification
Sholto, Thank you for the update, I did not realize MultiPSK had that capability. 73 de Ron W4LDE Sholto Fisher wrote: Ron John, MultiPSK has an analyzer function in it. It can measure baud rate and shift of RTTY FSK signals. It will also attempt to measure the symbol rate of BPSK signals. I'm guessing that at 14097 it was either a Packet or Pactor station. Pactor comes in 3 varieties I, II III. MultiPSK will decode Pactor-I but for Pactor II III you need some very specialized and expensive software/hardware. Currently I know of only Hoka Code 300 and the Wavecom decoders which will even attempt it. Prices range from around $8000 and up! Outside the ham bands there is little that can be successfully decoded these days. These include Weather FAX, Aviation/WX RTTY (very little nowadays), SITOR (again not much these days), HFDL, GMDSS DSC, Stanag 4285 (usually only test tapes), occasional ARQ-E stations, ALE, CW (eg Cuban spooks) but also some Far Eastern maritime stations still use CW. Interestingly the Cuban 'numbers stations' are experimenting right now with RDFT and also PSK220F which I believe is only available in MultiPSK Most RTTY stations you hear outside the ham bands are not RTTY at all. They often use a synchronous system and are encrypted so a normal RTTY decoder wouldn't make any sense of it. MultiPSK can also decode GMDSS DSC messages and VHF ACARS at present. MultiPSK can be downloaded for free at http://f6cte.free.fr/ 73, Sholto KE7HPV. W4LDE-Ron wrote: John, It is the PK232, I do think that there is that type of software out there, wish there was. 73 de Ron W4LDE John Lindsay wrote: This question has likely been asked previously but I can't find it in the archives if it has. Is there any multi-mode software that will attempt to automatically decode a selected signal? The reason I ask is there was something on 14097 last night and I tried muultipsk/mixw and the various modes available on them to attempt a decode but was unsuccessful. I'm not sure which TNC had it -- MFJ1728 or the PK232MBX but I remember using the SIAM mode to attempt to decode various modes that were available in the early 90's. Thanks in advance John [EMAIL PROTECTED] Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Check our other Yahoo Groups http://groups.yahoo.com/group/dxlist/ http://groups.yahoo.com/group/contesting http://groups.yahoo.com/group/themixwgroup Yahoo! Groups Links Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Check our other Yahoo Groups http://groups.yahoo.com/group/dxlist/ http://groups.yahoo.com/group/contesting http://groups.yahoo.com/group/themixwgroup Yahoo! Groups Links
[digitalradio] Re: automatic signal identification
The PK232MBX had the SIAM mode that was a lot of fun to use back in the day! In addition to the previous comment about MultiPSK, that software also has a mode-recognition system in place, however, a bit different than the old SIAM. In MultiPSK, stations have the option of setting the software to send at the beginning of each transmission a code that identifies the mode in use to other MultiPSK users, if they have their recognition option turned on. For example, if you are tuned to 14.077 and someone transmits CQ in MFSK with their mode identification on, and yours is also set to on, your software will automatically change to MFSK, with the proper speed, and also tune your transmit frequency to that of the other station. It's not nearly the same as SIAM, and it only works when the transmitting station is using MultiPSK and has that identification option on, but it can and does make figuring out which mode is in use! 73 es GL Dave KB3MOW --- In digitalradio@yahoogroups.com, John Lindsay [EMAIL PROTECTED] wrote: This question has likely been asked previously but I can't find it in the archives if it has. Is there any multi-mode software that will attempt to automatically decode a selected signal? The reason I ask is there was something on 14097 last night and I tried muultipsk/mixw and the various modes available on them to attempt a decode but was unsuccessful. I'm not sure which TNC had it -- MFJ1728 or the PK232MBX but I remember using the SIAM mode to attempt to decode various modes that were available in the early 90's. Thanks in advance John [EMAIL PROTECTED]
[digitalradio] Need MO WAS award
Apologies if this is off base for the group, but I am relocating in mid April and there's one last ARRL award I wanted to accomplish. All LOTW-WAS, I need the state of Missouri MO I have QSL cards but have not been able to work a LOTW user. I was going to start bombarding the airways with a CQ-MO but thought I would try her first and save the possible QRM for others. Any MO LOTW users out there would work any of the digital modes that can help? Leaving FL after 34 years and relocating to GA south-west of Atlanta. Get to start all over, that will be fun. 73 de Ron W4LDE
[digitalradio] ALE400 Testing 3584kc USB
from 1600Z Friday to Z Sunday, VE5MU will be on 3584 USB running ALE 400. 1500 hz center .QRZ and HFN enabled for soundings please connect using the Mail function, leave your name ,address and signal report, and I will forward you a genuine VE5MU QSL card directly. These might be collector's items. someday john VE5MU
[digitalradio] Re: 503 KHz dual test , JT65-A AND WSPR Friday night , 1800 2400 ish .
--- Final tx settings TX set , 501.000 KHz Dial frequency Mode USB WSPR audio frequency 1500 Hz , Ae signal fequency 503.000 KHz JT65-A Using Multpsk, spectrum plot 'purple line' set 1000 Hz ( - 270 Hz ) Two modes , usb , approx 25 mW erp per mode , tx audio drive set under alc point . RX - Dial set 501.5 KHz USB , Tnx - Graham G0NBD IO83LK
[digitalradio] SSTV VK - EU Tests on 7.033Mhz
I am new to this group and it appears to be where I might find operators with a similar interest, most of my activity is focused on MMSSTV DX and propagation tests. The last year I have focussed mainly on 14.230 and LP to US and SP to EU. This Winter in VK I am looking for operators in EU region interested in SSTV on 7.033Mhz. Equipment will be a TS430S and Emtron DX-2 amp with a 40m Inverted V Horizontal polarisation is oriented to EU. I have run some tests with PE2SWL webcam over last week and have managed some RX pics on a 20m antenna at his location so the path is feasible. Over next week I intend to add a wire Reflector behind the Inverted V to lower the angle of radiation from 70 Degrees to 26 Degrees. Also interested in EasyPal tests on 7.033Mhz but I am less familiar with this software on DX paths. Any takers, The best opening to EU seems to be between 20-21 UTC I will endeavour to be there most days my website will announce if my station and webcam are operating http://users.tpg.com.au/adslsymb/VK6AAL/ Look forward to any contacts, all the best and GD DX.
[digitalradio] 80 / 40 meter daylight activity
Hello, When last I operated, early 80's, there was a lot of SSB activity on these lower bands during the day. You could always find someone to rag chew with. I live in the North East with a high density of operators yet I hear no daytime PSK31 stations.Calling CQ around 7.035 MHz has not prompted responses. Are there better frequencies to operate on or do I just keep calling into the aether :-) Thanks, Ed W2GHD
Re: [digitalradio] 80 / 40 meter daylight activity
Hi Ed, I think 7.070 MHz is the PSK31 frequency to use. Try that. Bob WU9Q lmeeny wrote: Hello, When last I operated, early 80's, there was a lot of SSB activity on these lower bands during the day. You could always find someone to rag chew with. I live in the North East with a high density of operators yet I hear no daytime PSK31 stations.Calling CQ around 7.035 MHz has not prompted responses. Are there better frequencies to operate on or do I just keep calling into the aether :-) Thanks, Ed W2GHD Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Check our other Yahoo Groups http://groups.yahoo.com/group/dxlist/ http://groups.yahoo.com/group/contesting http://groups.yahoo.com/group/themixwgroup Yahoo! Groups Links
[digitalradio] RFI-Free PCs?
All, Need to replace the PC in the shack and would like to find something that's RFI-free out of the box. I've had terrible luck with desktop PC's, but the last two laptops (Toshiba) were very quiet. I'm leaning towards something in the small-PC catagory with an LCD monitor. Sound card and multiple USB ports are a must. Any suggestions would be greatly appreciated. Tony -K2MO Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Check our other Yahoo Groups http://groups.yahoo.com/group/dxlist/ http://groups.yahoo.com/group/contesting http://groups.yahoo.com/group/themixwgroup Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] Re: RFI-Free PCs?
Tony, I had the same question at one time and found building the box myself was the best solution. Asking for something out-of-the-box might be like searching for the Holy Grail! I'm using a great CoolerMaster case*, which is double-walled and uses a metal mesh instead of plastic for the bay covers. The power supply uses shielded cables and has been the quietest RFI pc I've owned. For what it's worth, here's what's in the box I have. I don't know if this has contributed to low noise, but here it is: Intel motherboard (DQ35JO) Core 2 Duo 3.0 CPU ATI x1650 PCIE (512MB) 2 sticks of 1GB Corsair XMS2 (DDR2) 2 250GB Seagate Barracudas (RAID0) Plextor DVD-RW Memory card reader in the floppy slot (All this for less than a Dell, dude.) The board has on-board sound, but pretty decent, offering a S/N ratio of around 95 dB. Better than a SoundBlaster Live. Great for digital modes. Using an LCD monitor is also a great idea. I recommend taking an AM radio to your local LCD reseller and scan across the ones they have on display. I got funny looks when doing so, but it's a good opportunity to educate the salesperson! I found that CTL and Viewsonic have some quiet models. PLEASE let us know the make and model if you find a RF quiet one. It might save us some work later. I also added ferrites and toroids in the case to where ever I thought they should go, including all fans. Be sure to wrap a couple around the cables from the front USB audio jacks. These might not be necessary, but I didn't want to troubleshoot the RF later. My hand-held AM radio gets zero buzz from the tower, but wave it in front of a CRT (even one of my LCDs) and it lights up! *The case model is here: http://www.coolermaster.com/products/product.php?act=detailid=2908 Whichever enclosure you get, stay away from those silly Plexiglas-type clear side panels! I also have the system grounded and the rig and PC on the same power outlet. I have the rig right under the PC, with a tin plate to further shield it. An overall picture of my setup, including my favorite 'accessory' can be seen (for now) via the link below. Hope that helps some! 73. Frank K2NCC http://evokefrank.googlepages.com
