Re: [digitalradio] JT65A pile-up on 40M.
If we follow some of the suggestions on here, namely tuning off slightly ie running at 7076.4 instead of right on the frequency of 7076.0, then it would be possible to decode 2 stations at once , especially if one of them had tuned off a little, then they would not end up on top of each other Would require the TOL setting to be a little wider. The setting of the TOL width seems to be the one thing that gets many ops into difficulty decoding epecially when it is set too tight. I find that setting TOL to 200 for most seems to work best, and tighten when needed. John VE5MU - Original Message - From: Andrew O'Brien To: digitalradio@yahoogroups.com Sent: Thursday, April 19, 2007 6:01 AM Subject: Re: [digitalradio] JT65A pile-up on 40M. I'm not sure about that either Jeff. I am assuming that two stations fell within his tolerance range and thus two were printed. It has not happened to me. Andy. On 4/18/07, Jeff Bouvier [EMAIL PROTECTED] wrote: Hmmm, you can copy more than one station in a minute? How? I must have something set up incorrectly. I've only been able to decode 1 station at a time. I made my first JT65A qso last night. Worked VE7TIL on 80m. I was running 30w to a vertical. 73, Jeff K1AM - Original Message - Subject: [digitalradio] JT65A pile-up on 40M. Date: Wed, 18 Apr 2007 22:22:36 -0400 From: Andrew O'Brien [EMAIL PROTECTED] Here's one of my favourite entries from the N0UK JT65A Terrestrial page tonight... 04/19 02:14 YIIPS HOW DO YA WRK 4 AT A TIME -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 269.5.2/766 - Release Date: 4/18/2007 7:39 AM
[digitalradio] Re: JT65A pile-up on 40M.
Double-click the trace you want decoded. Then double click another one. Works fine.
Re: [digitalradio] Keyboarding via satellites
Joe, Can sked with you tonight on VO-52 / Feld Hell mode. Let me know what pass time is best for you and we'll give it a go.. Tony KT2Q - Original Message - From: Joe Veldhuis [EMAIL PROTECTED] To: digitalradio@yahoogroups.com; [EMAIL PROTECTED] Sent: Wednesday, April 18, 2007 1:40 AM Subject: [digitalradio] Keyboarding via satellites For awhile now, I've been thinking it would be interesting (or at the very least, fun) to try making some contacts through the linear transponder satellites (currently AO-7, FO-29 and VO-52) using HF-style keyboard digital modes. On the Feldhell list, I suggested trying it through AO-7 when it's running mode A, as the doppler shifts aren't so terrible on 2 and 10 meters. However, even on a mode B or J bird, some modes can deal with the doppler. I did some experiments on VO-52 about an hour ago. During the pass, I tried Feldhell, DominoEX-11 and PSK31. Hell worked great, just periodically recenter the cursor on the signal (or tune your receiver) and there's no problem. DominoEX proved more difficult, you must frequently recenter (a few times a second) to get readable print. PSK31 didn't work at all. I suspect RTTY would work well, but the pass (which never got above 13 degrees) was finished before I got around to trying it. Here's a pair of recordings I made: http://www.electroblog.com:8090/vo52_digi.zip 1.1 MB ZIP file containing two WAV files. Note that the DominoEX signal is reversed. VO-52's transponder, like most, inverts the received signal. As the traditional operating procedure for SSB is to uplink LSB and downlink USB, the transmitting side should probably operate in reverse mode. By the way, I did this with a relatively modest setup: a 25 element horizontal yagi on 70 centimeters for the uplink and a Cushcraft 13B2 for the 2 meter downlink, on an azimuth-only rotor. Yaesu 857 for TX, Yaesu 817 with a homebrew preamp for RX. Transmit power was about 10 watts. Anyway, one really can't expect to make a random digital QSO through these birds, since the vast majority of their users are only set up for SSB or CW, so perhaps some skeds should be arranged. -Joe, N8FQ
[digitalradio] QSO with KQ6XA
Bonnie, Thank-you for the contact on JT65A. You did confuse me with your response and then for some reason you went from txing on second to txing on first and I was not sure whether that was still you. Anyway, solid copy and I was using about 15 watts into an R5 vert. Darrel, VE7CUS
Re: [digitalradio] My Own JT65A Monday - FINALLY
On Thu, 19 Apr 2007 18:13:35 -0500 w6ids [EMAIL PROTECTED] wrote: I know the thing works, but there's this thing about a learning curve, time accuracy, etc. So, I was kind of surprised when I actually pulled off the sequence of making a contact that is located elsewhere besides CONUS: 222800 0 -21 7.1 -127 3 222900 10 -5 1.5 -124 0 * CQ JS1OYN PM951 0 223200 4 -7 1.8 -16 3 * W6IDS JS1OYN PM95 1 0 223400 4 -9 1.1 -16 3 # W6IDS JS1OYN PM95 OOO 1 0 223600 10 -20 -17 3 RRR ? 223800 10 -19 -17 2 73 ? Howard, Coincidentally I started on the learning curve yesterday for HF JT65A along with another local radio club member, Steve GM7GWW. We're currently in QSO together on 2m while we both watch 20m or 40m for JT65A activity while we get to grips with the mode. For your information I received the following from you today on 20m. I was using an untuned random length dipole only 2m agl :- 162200 7 -18 1.3 -35 3 * OH5VG W6IDS EM79 1 0 223100 5 -16 1.6 137 2 * JS1OYN W6IDS EM79 1 0 I'm in the Shetland Islands (IP90) so I guess that counts as outside CONUS! I hope to start transmitting JT65 in the next few days once I'm comfortable with driving the software, and when I remove my IC70611g from the car. At present I'm receiving on my K2 (no SSB module so TX). There certainly seems to be a steady trickle of activity on 20m, and some familiar callsigns for lurkers to the digitalradio group to spot. Cheers from Shetland (IOTA EU-012) John GM4SLV
[digitalradio] Re: My Own JT65A Monday - FINALLY
Hi Howard, Congrats! Bill N9DSJ --- In digitalradio@yahoogroups.com, w6ids [EMAIL PROTECTED] wrote: Hello, All. I've been playing with this mode and making piece meal contacts as it were while learning. Mostly, I've been receiving. I know the thing works, but there's this thing about a learning curve, time accuracy, etc. So, I was kind of surprised when I actually pulled off the sequence of making a contact that is located elsewhere besides CONUS: 222800 0 -21 7.1 -127 3 222900 10 -5 1.5 -124 0 * CQ JS1OYN PM951 0 223200 4 -7 1.8 -16 3 * W6IDS JS1OYN PM95 1 0 223400 4 -9 1.1 -16 3 # W6IDS JS1OYN PM95 OOO 1 0 223600 10 -20 -17 3 RRR ? 223800 10 -19 -17 2 73 ? I had to dial the station in manually; it was originally +135 from me, so on the fly didn't do too badly. For Bill P., this kinda reminds me of PSK63 testing (GRIN) but with more hope for success it seems. Howard W6IDS Richmond, IN
[digitalradio] Deepsearch on JT65 HF --turn it off
All, Per topic, deepsearch is great for EME, a wonderful feature. But on HF is is of little value and will only lead to false decodes and stations answering you when you haven't transmitted. Decode menu, JT65, check No deep search Hope this helps.. 73 Bill N9DSJ
[digitalradio] JT65 5mw QSO with XE2AT!
All: Managned to work Al, XE2AT on JT65 with 5mw this evening on 20 meters. All was using a 40 meter Bazooka antenna with tuner. Turned the power down to 1mw (according to Oak Hills WM2 QRPp wattmeter) while sending 73 and Al heard me! Amazing mode... Tony KT2Q
[digitalradio] Re: Deepsearch on JT65 HF --turn it off
Hi John, Sure you already know this but the key was the 0 3 082600 1 -14 5.2 584 3 * GM4SLV SM2LKW KP15 ? 0 3 No RS decode but a deep search decode. Joe provided us with wonderful software, but not envisioned for HF usage. Guess we need to adjust abit :) As I hope I made clear; deep search using call3.txt is great for EME, with known precautions. On HF it is less useful. Perhaps running -30 db S/N of HF with a dedicated HF call3.txt file it might be entertaining.food for thought. 73 Bill N9DSJ --- In digitalradio@yahoogroups.com, John GM4SLV [EMAIL PROTECTED] wrote: On Fri, 20 Apr 2007 00:19:11 - Bill McLaughlin [EMAIL PROTECTED] wrote: All, Per topic, deepsearch is great for EME, a wonderful feature. But on HF is is of little value and will only lead to false decodes and stations answering you when you haven't transmitted. Too right! How confusing is it to see :- 082600 1 -14 5.2 584 3 * GM4SLV SM2LKW KP15? 0 3 and wonder how in the world SM2LKW could possibly know I was listening!? There's some freaky maths in this software, but ESP? Turn off Deep Search if you want to only see what has actually been received, not what the software thinks is the most likely thing to have been received. I suppose what needs to be done is the compilation of a new HF operator's CALL3.TXT to get some use out of this aspect of WSJT's functionality. Cheers, John GM4SLV Shetland Is. IP90 / EU-012
[digitalradio] Re: JT65 5mw QSO with XE2AT!
I don't believe it happened. Would need to see it myself. Opps, I did see it happen Good going Tony and Al. Bill N9DSJ --- In digitalradio@yahoogroups.com, Tony [EMAIL PROTECTED] wrote: All: Managned to work Al, XE2AT on JT65 with 5mw this evening on 20 meters. All was using a 40 meter Bazooka antenna with tuner. Turned the power down to 1mw (according to Oak Hills WM2 QRPp wattmeter) while sending 73 and Al heard me! Amazing mode... Tony KT2Q
Re: [digitalradio] Deepsearch on JT65 HF --turn it off
Well, Bill, I'll thank you for that. It answers a nagging question. I've seen instances where I've seen myself being called by a number of stations over time periodically.and I wasn't even keying the rig. Can you explain what is happening - I DID have Deep Search ON as I recall. Only recently did I switch it off. Howard W6IDS Richmond, IN - Original Message - From: Bill McLaughlin To: digitalradio@yahoogroups.com Sent: Thursday, April 19, 2007 7:19 PM Subject: [digitalradio] Deepsearch on JT65 HF --turn it off All, Per topic, deepsearch is great for EME, a wonderful feature. But on HF is is of little value and will only lead to false decodes and stations answering you when you haven't transmitted. Decode menu, JT65, check No deep search SNIP SNIP
Re: [digitalradio] Re: Deepsearch on JT65 HF --turn it off
How would one format an HF call3.txt Guess I need to take a peek at my folders and look at it. I'm assuming such a file use is possible? It's used for decision-making by the software sometimes in determining validity of callsigns or?? I'll bet it's discussed in the docs, but tell me anyway. Howard W6IDS Richmond, IN - Original Message - From: Bill McLaughlin To: digitalradio@yahoogroups.com Sent: Thursday, April 19, 2007 8:25 PM Subject: [digitalradio] Re: Deepsearch on JT65 HF --turn it off Hi John, Sure you already know this but the key was the 0 3 SNIP SNIP As I hope I made clear; deep search using call3.txt is great for EME, with known precautions. On HF it is less useful. Perhaps running -30 db S/N of HF with a dedicated HF call3.txt file it might be entertaining.food for thought. SNIP SNIP
RE: [digitalradio] Re: Deepsearch on JT65 HF --turn it off
I agree that adding deep search with perhaps a separate file for HF callsigns should work great on HF for weak signals .. Elaine _ From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of w6ids Sent: Thursday, April 19, 2007 7:14 PM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] Re: Deepsearch on JT65 HF --turn it off How would one format an HF call3.txt Guess I need to take a peek at my folders and look at it. I'm assuming such a file use is possible? It's used for decision-making by the software sometimes in determining validity of callsigns or?? I'll bet it's discussed in the docs, but tell me anyway. Howard W6IDS Richmond, IN - Original Message - From: Bill McLaughlin To: digitalradio@ mailto:digitalradio%40yahoogroups.com yahoogroups.com Sent: Thursday, April 19, 2007 8:25 PM Subject: [digitalradio] Re: Deepsearch on JT65 HF --turn it off Hi John, Sure you already know this but the key was the 0 3 SNIP SNIP As I hope I made clear; deep search using call3.txt is great for EME, with known precautions. On HF it is less useful. Perhaps running -30 db S/N of HF with a dedicated HF call3.txt file it might be entertaining.food for thought. SNIP SNIP
Re: [digitalradio] JT65 5mw QSO with XE2AT!
Hmmm.. there's a lesson here isn't there? When no one is looking, what do YOU do normally? Amazing, indeed. Howard W6IDS Richmond, IN - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: Thursday, April 19, 2007 8:18 PM Subject: [digitalradio] JT65 5mw QSO with XE2AT! All: Managned to work Al, XE2AT on JT65 with 5mw this evening on 20 meters. All was using a 40 meter Bazooka antenna with tuner. Turned the power down to 1mw (according to Oak Hills WM2 QRPp wattmeter) while sending 73 and Al heard me! Amazing mode...
[digitalradio] Re: Deepsearch on JT65 HF --turn it off
How would one format an HF call3.txt example from file: ZS6GPM,KG33XU,,10/02 i think format is callsign,locator,,date additional entry would be: HB9TLK,JN47HJ,,3/07 Guess for HF the EME entries could be deleted to avoid false detects.
Re: [digitalradio] JT65 Flatten Spectrum Option
Yes, I noticed my spectra was flattened . I was hoping it would not cause my wife to leave me and...oh wait, wrong subject. Seriously, I did some Spectra testing last night and found turning it off solved the problem. Then this morning I received a message Unable to allocate a bivariate polynomial for factorization. That sounds more painful that a flattened spectra. Andy K3UK On 4/19/07, KT2Q [EMAIL PROTECTED] wrote: Andy: As you noted last night, the Flatten Spectrum option in SpecJT tends to cause the waterfall to go black when receiving strong signals. Reducing the RX audio will make it worse; increasing the audio seems to solve the problem. The SpecJT gain should give the same effect. See attached. The FS option flattens (evens out) the audio passband frequencies and it seems to act as an audio-in AGC allowing stronger RX noise levels without masking weaker signals. I've been using WSJT for many years, but this is all new to me since I've only used the mode on VHF meteor scatter and the occasionaly EME contact where signals are a lot weaker than what we see on HF. Hope this helps.. Tony KT2Q -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com
[digitalradio] WSJT recompile
I am working on recompiling WSJT, as I mentioned to Cesco. I have got it down to one unsatisfied link error, probably due to compiler version skew (gmttime_ in Audio.so). One goal is to change the PTT routines to offer more options...with my K2 I use the RS232 command set, not the control lines, for keying. Since this code is in C instead of Python, it requires recompilation. Another goal, and this may not require recompilation, is to slim down the UI and remove the EME stuff. The recent topic about disabling deep search is one example of options that could be removed. The Moon az-el is another... Also it seems like making click-to-tune work is a possibility. It may be the wrong thing for the EME folks, but adding a NET or Lock button as is common on other digimode programs would likely eliminate a source of confusion. Finally, I have heard a few calls for changes in the underlying signal, so hopefully getting a buildable system up will help those who want do get this done. Maybe at the end we will have a JT65h variant for HF with a little faster transfer and slightly larger data packets. Anybody have other wants? Leigh/WA5ZNU
[digitalradio] Bozo's concept of Deepsearch on JT65 HF( was --turn it off )
Deep search, in bozo terms. can be explained thus.. software is on, rig is on. Software is seriously hunting for signs of a JT65A signal despite weak signals, or more likely NO signals. Sofware spots a fragment of something that might eb JT65A and say hmmm, I wonder who this might be? Software thinks a while and then says Hmm, well I know that my set-up area has K3UK as the callsign, so I am going to guess that this fragment of a signal is someone calling K3UK. Software thinks some more and says Hmm, maybe I'll look up the text file containing a list of callsigns and grid square and see who it might be calling K3UK.. Software then essentially takes a whild guess and then prints... 022700 0 -30 7.2 541 5 K3UK P5DX PM27 0 3 K3UK gets excited at working North Korea on 15 meters at 0227 Z with a solar flux of 68 in Spring at the bottom of an 11 year cycle and a predicted MUF of 3.6 mHz. Andy thinks that it is quite natural that P5DX would call him just to see if ANdy was in the shack. That's because Andy is a bozo... Andy K3UK On 4/19/07, cesco12342000 [EMAIL PROTECTED] wrote: How would one format an HF call3.txt example from file: ZS6GPM,KG33XU,,10/02 i think format is callsign,locator,,date additional entry would be: HB9TLK,JN47HJ,,3/07 Guess for HF the EME entries could be deleted to avoid false detects. -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com
[digitalradio] JT65A operating protocol question:
Would it be beneficial for stations calling CQ to transmit on even minutes (TX first) , while stations answering CQ's use odd minutes (TX second) ??? Jus wonderin .. Elaine / WA6UBE
Re: [digitalradio] Re: JT65A and ARRL Field Day
Since the exchange isn't more than 7 characters on either side (3 for count and class, space, 3 for section) it looks like it would work plenty well for FD contesting. On Wed, 18 Apr 2007 08:08:17 -0400, Andrew O'Brien [EMAIL PROTECTED] wrote: You can type anything you want in the TX1 to TX6 message boxes, they have to be 13 characters or less . If you type free text in them they go out in the non-shorthand mode and thus are not quite as robust as the RO, RRR, 73 messages. This should not make a real difference for Field Day . On 4/18/07, jdh23462 [EMAIL PROTECTED] wrote: So..can the text fields be changed? Is there anyone using different text than the standard grid OOO RRR ??? Appreciate any info. 73's Jeff, KA1DBE/4 --- In digitalradio@yahoogroups.com digitalradio%40yahoogroups.com, jdh23462 [EMAIL PROTECTED] wrote: After reading though the Bozo guide and the JT65 protocol, I am assuming that everyone is using WSJT as it would be set up for moon bounce or meteor scatter. Has anyone used it sending plain text? The reason I ask, I would like to use this as a demonstration mode for field day and could I stray from the type 1 message and substitute the grid square with the Field day exchange? (4AVA vice FN16?) How would this effect the decoding? Any assistance would be helpful. Thanks and 73's, Jeff, KA1DBE/4 -- John Smokey Behr Gleichweit FF1/EMT, CCNA, MCSE IPN-CAL023 N6FOG UP Fresno Sub MP183.5 ECV1852 List Owner x6, Moderator x4 CA-OES 51-507 http://smokeybehr.blogspot.com http://www.myspace.com/smokeybehr
[digitalradio] Re: JT65A operating protocol question:
-I think that is a great idea. -- In digitalradio@yahoogroups.com, Patricia \(Elaine\) Gibbons [EMAIL PROTECTED] wrote: Would it be beneficial for stations calling CQ to transmit on even minutes (TX first) , while stations answering CQ's use odd minutes (TX second) ??? Jus wonderin .. Elaine / WA6UBE
Re: [digitalradio] Re: QSO with KQ6XA
Well done Bonnie, good to see you test this. Andy. On 4/19/07, expeditionradio [EMAIL PROTECTED] wrote: --- In digitalradio@yahoogroups.com digitalradio%40yahoogroups.com, Darrel Smith [EMAIL PROTECTED] wrote: Bonnie, Thank-you for the contact on JT65A. You did confuse me with your response and then for some reason you went from txing on second to txing on first and I was not sure whether that was still you. Anyway, solid copy and I was using about 15 watts into an R5 vert. Darrel, VE7CUS Hi Darrel, That was a fun JT65A QSO with you today on 14076 USB. The 20m band was almost dead here today, other than a few JT65 sigs. I was running 100W+ and a vertical loop antenna. Bonnie KQ6XA -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com
[digitalradio] Digitalradio group traffic load
The digital radio group is currently experiencing about a 50% increase in the message volume due to an explosion of interest in the use of JT65A digital mode on HF. The digitalradio group remains a group dedicated to the discussion of all digital radio modes despite the intensive interest in JT65A in the past three weeks. If the traffic volume is too much for you, or the unusually singular interest is bothersome, please feel free to change your mail delivery options. You can select a daily digest option or you can choose a web based option where you got to the web page and just browse mail of interest. http://groups.yahoo.com/group/digitalradio/join is where you can make any desired changes. We have had a large amount of interest and no real complaints, I thank everyone for their helpfulness and their understanding. Andy K3UK Owner.
Re: [digitalradio] WSJT recompile
Can you offer 30 second TX as an option? On 4/19/07, Leigh L Klotz, Jr. [EMAIL PROTECTED] wrote: I am working on recompiling WSJT, as I mentioned to Cesco. I have got it down to one unsatisfied link error, probably due to compiler version skew (gmttime_ in Audio.so). One goal is to change the PTT routines to offer more options...with my K2 I use the RS232 command set, not the control lines, for keying. Since this code is in C instead of Python, it requires recompilation. Another goal, and this may not require recompilation, is to slim down the UI and remove the EME stuff. The recent topic about disabling deep search is one example of options that could be removed. The Moon az-el is another... Also it seems like making click-to-tune work is a possibility. It may be the wrong thing for the EME folks, but adding a NET or Lock button as is common on other digimode programs would likely eliminate a source of confusion. Finally, I have heard a few calls for changes in the underlying signal, so hopefully getting a buildable system up will help those who want do get this done. Maybe at the end we will have a JT65h variant for HF with a little faster transfer and slightly larger data packets. Anybody have other wants? Leigh/WA5ZNU -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com
Re: [digitalradio] Re: JT65 5mw QSO with XE2AT!
Bill... Glad you were watching that! I was thinking about shooting a short video to show how well the mode performs with super-low pwer. We might encourage others to start a sub group of JT65 QRPp operators ; ). Thanks for your patients and reports. Tony KT2Q - Original Message - From: Bill McLaughlin [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Thursday, April 19, 2007 9:32 PM Subject: [digitalradio] Re: JT65 5mw QSO with XE2AT! I don't believe it happened. Would need to see it myself. Opps, I did see it happen Good going Tony and Al. Bill N9DSJ --- In digitalradio@yahoogroups.com, Tony [EMAIL PROTECTED] wrote: All: Managned to work Al, XE2AT on JT65 with 5mw this evening on 20 meters. All was using a 40 meter Bazooka antenna with tuner. Turned the power down to 1mw (according to Oak Hills WM2 QRPp wattmeter) while sending 73 and Al heard me! Amazing mode... Tony KT2Q
