[digitalradio] HFLINK Comments to ARRL on Development of New HF Digital Comm Protocols
Please click here to read the HFLINK recommendation comments: http://www.hflink.com/arrl/ Background On 22 Feb 2007, the ARRL announced that it seeks comments from amateurs concerning development of an open-source, non-proprietary, data communications protocol suitable for use by radio amateurs over HF fading paths. ARRL's announcement was discussed at length in the HFLINK Forum and via private correspondence. On 15 May 2007, HFLINK respectfully submitted comments in response to ARRL's announcement. Read on the web: http://www.hflink.com/arrl/ Regards, Bonnie Crystal KQ6XA HFLINK Founder
Re: [digitalradio] 30 meter PSK
Hi Don, I am glad to see a specific frequency for 30 meters. When I have called CQ though it was usually at 10.133 dial frequency + 1500 Hz. The reason for my choice of frequency is to avoid the 10.140 to 10.150 automatic sub band where you can expect to be QRMed by Pactor stations that can come up suddenly. Is your dial frequency 10.140 or are you actually operating on 10.140? 73, Rick, KV9U Don wrote: GE, Not sure if anyone might be interested in dedicating a few months or up to a year on 30 meters, but if you might be interested in trying to get more PSK or digital activity on 30 meters then maybe a group dedicated to just 30 meter PSK might help. If you are interested join in if not no problem (I will be CQing most nights on 10.140 so if you can't or won't respond then give us an email with a signal report on 30). See you on 30 meters PSK 10.140. http://groups.yahoo.com/group/30meterPSKGroup/ Thank you for letting me post here in this group. de kb9umt Don Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/drsked/drsked.php Yahoo! Groups Links
Re: [digitalradio] 30 meter PSK
No John, Only RTTY of the normal digital modes should be given in the radios dial freq. Once the waterfalls came around with other modes (PSK ETC) the customary thing is to give the waterfall freq. I know some do as you, but it has become much the minority that do so. Danny Douglas N7DC ex WN5QMX ET2US WA5UKR ET3USA SV0WPP VS6DD N7DC/YV5 G5CTB all DX 2-6 years each . QSL LOTW-buro- direct As courtesy I upload to eQSL but if you use that - also pls upload to LOTW or hard card. moderator [EMAIL PROTECTED] moderator http://groups.yahoo.com/group/DXandTalk - Original Message - From: John Becker [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Wednesday, May 16, 2007 6:33 PM Subject: Re: [digitalradio] 30 meter PSK At 05:24 PM 5/16/2007, you wrote: Don, it is customary to give a freq which is the freq the software is showing on the waterfall. Frankly, it is next to useless for many of the spots that show a dial freq. I totally disagree. If I'm on 14,070 at the default offset that's useless? Your off set my not match mine. Or maybe I just don't understand this at all. As long as I have been on digital modes and that's going back to 1970 one always gave the dial frequency. Sorry for the bottom reply but it's short... John, W0JAB Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/drsked/drsked.php Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.467 / Virus Database: 269.7.1/805 - Release Date: 5/15/2007 10:47 AM
Re: [digitalradio] 30 meter PSK
Well really that should be RTTY Amtor and Pactor along with some other modes that have fixed offset. Anything that operates on LSB. Since I only operate HELL and MT63 on the sound card and NEVER click but tune by using the big knob. See you on the good modes some time. At 07:20 PM 5/16/2007, you wrote: No John, Only RTTY of the normal digital modes should be given in the radios dial freq. Once the waterfalls came around with other modes (PSK ETC) the customary thing is to give the waterfall freq. I know some do as you, but it has become much the minority that do so.
Re: [digitalradio] 30 meter PSK
Problem with using the actual VFO settings is that some might be using the high tone set while others are using a low tone set. Then the frequency could be off by as much as 1kc. I recommend that we all start using the VFO plus the audio frequency or waterfall frequency. That would work unless you were using the FSK method to key the rig verses the audio input from the sound card. Looks like we can't please everyone, thats why I use the low tones from my rig on FSK-RTTY, usually that gets me close to the signal since users of USB-RTTY have a default of somewhere from 1000 to 2000hz as there default Ron W4LDE John Becker wrote: Well really that should be RTTY Amtor and Pactor along with some other modes that have fixed offset. Anything that operates on LSB. Since I only operate HELL and MT63 on the sound card and NEVER click but tune by using the big knob. See you on the good modes some time. At 07:20 PM 5/16/2007, you wrote: No John, Only RTTY of the normal digital modes should be given in the radios dial freq. Once the waterfalls came around with other modes (PSK ETC) the customary thing is to give the waterfall freq. I know some do as you, but it has become much the minority that do so. Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/drsked/drsked.php Yahoo! Groups Links
[digitalradio] VFO Dial Frequency, Audio Frequency, Centre Frequency
--- In digitalradio, W4LDE Ron wrote: I recommend that we all start using the VFO plus the audio frequency or waterfall frequency. Ron W4LDE Hi Ron, I agree. Some modes are appropriately defined by RF centre frequency, Some modes are appropriately defined by VFO dial frequency. There certainly are many operators using digital soundcard modes who do not have CAT control on their rigs, so their display does not show the mode's RF center frequency. Probably the majority of hams on PSK31 don't use CAT control... they simply set their VFO dial frequency to 14070 USB. To know their RF frequency, they must calculate it by adding the audio frequency to the dial frequency. Many of us understand this mainstream fact, and define our sked frequency by VFO dial frequency + audio centre frequency. There is a trend to simply use the USB VFO dial frequency as the reference point for MFSK modes, with about ~1500Hz audio center for the signal. This rule of thumb enables a sked QSO to switch any mode or flavor that is desired by the operators at the time, and appropriate for conditions. The digital protocols that use fixed frequency audio signals are almost always defined by VFO dial frequency. Especially when there is a mix of voice, images, and data, it is by far more convenient and appropriate to simply call out the VFO dial frequency. Bonnie KQ6XA
Re: [digitalradio] VFO Dial Frequency, Audio Frequency, Centre Frequency
It may be simple for YOU Bonnie, but those of us with good software which does all the figuring for you, do NOT find it simple when someone spots a station on 14071. I click on that, and my rig goes to 14070, and hopes the signal is at 14071 on the waterfall, and quite often is NOT there, because someone else uses a different offset. I too started out with spotting the rigs freq, and quickly understood that is NOT where the signal is in the waterfall, and that my spot was rather useless to those who had software that did if for them. Those of you that jiggle the main tuning knob around to do their tuning, can still do so. You have to know what YOUR offset is anyway, so go ahead and tune it where you know it will set the waterfall tracer up where YOU want it. I dont care at all what YOUR offset is. Just giving me the correct spot, allows instant tuning and I dont have to search around amongst 30 or so digital signals to find the station you just told me was there. Contraywise, if I tell you the signal is on 14,17205, you just have to subtract(or add) your offset from that and you know where to set your tranceivers knob. On top of all that, when I spot a station, my software automatically sends it out with the ofset figured in, so if you go to the frequency in the waterfall, you will find the signal I spotted. The four software packages I have used do this automatically. They also give me the whole freq readeout right above, or below, the signals on the waterfall. (Which is what they spot). As to the percentages of those who use CAT or not, I have no idea. But, it would supprise me if their isnt a larger percentage that do - than dont. Certainly with all new tranceivers being built to allow CAT control, I cannot imagine that most hams in the future will be using CAT. After all, we most all have a computer already - and are using that to send/receive digital modes - so the equpment is there to run CAT control. It is far more convenient to use CAT control, and the automatic offset - than to fiddle with knobs. \ Danny Douglas N7DC ex WN5QMX ET2US WA5UKR ET3USA SV0WPP VS6DD N7DC/YV5 G5CTB all DX 2-6 years each . QSL LOTW-buro- direct As courtesy I upload to eQSL but if you use that - also pls upload to LOTW or hard card. moderator [EMAIL PROTECTED] moderator http://groups.yahoo.com/group/DXandTalk - Original Message - From: expeditionradio [EMAIL PROTECTED]
[digitalradio] Re: 30 meter PSK
Danny N7DC, Thanks for the info, I'm not sure but my guess is if you are around +/- 10.140 and the band is decent maybe you would see my signal, I hope so (unlike 20 meters there isn't 10 or 20 qso's or lines to choose from or so I see it most the time on 30m psk). Give me a try sometime if you will, I will be on for the next few months dedicated to 30 meter PSK and other digital modes only. I'm not really techy or formal on all this but love Ham Radio and digital modes so your comments are read and I take it all in, thanks for the information Danny. The new group started will be for 30 meter onlyso hope you join in or if not then look for my signal because I will be on 30 meter PSK or other digital modes only for the next few months, hope to see you again! http://groups.yahoo.com/group/30meterPSKGroup/ *** My report/post the 30 meter PSK Yahoo Group ** My 30 meter PSK report for night of 5/16/07, it was a good night! GE, This is my first report to the 30 Meter PSK group and I had lots of fun for the short amount of time on 30 meter PSK, I hope you all will pass it on that we are trying to promote more PSK and digital activity on 30 meters so they will join in, look for our signals, or join this group. My 30 meter report . 2:00 to 3:00 utc 5/17/07: CQ'd for every minute for about the first 15 minutes and thought the band or PSK traffic might be a lost cause again ..but K3MQ Bob from Delaware came in 599 with a very strong signal from the east coast, talked to Bob for over 10 or 15 minutes of ragchew (while talking with Bob I did then notice about 2 other PSK signals on the band) NC5O Jim from TX was next, not the strongest signal but still decent copy. Jim was using a SoftRock40 with 1.5 watts qrp power, WOW, not bad for 1.5 watts of power on his butternut vertical. K4RKM EM85VF PropNet Beacon signal copy in and out for several minutes, good copy into EN50dp here in Peoria, IL SV1ENV Pontazopolos in Greece contact, WOW now I'm hooked on 30 meter PSK and will for sure be on the band for a few months to see what DX is on 30 meters. I even was able to copy his long name so the copy here was very good from Greece was a great thrill to contact into Europe on 30 meter PSK. W0HPE Jack in Kansas was next and had a 599 signal that was 100% copy and very strong on the band. DG1FK Peter in Germany ended my night and made my night by another Europe contact on 30 meter PSK, I had a great signal on him on my loop and he had a very very nice station brag. K9HJZ Jeff - from my home town getting involved in some 30 mtr PSK and the signals. N1YW Larry from MA, nice signal here and was chasing a Russian PSK station but it was late so enough for me. So, that was the night here in Peoria IL EN50dp on 30 meter PSK .had lots of fun and the DX was just an added plus so I think I will keep at it for a while. Anyone else on the 30 meter band last night? Any reports? Any other skeds? I will be looking for more 30 meter PSK signals so please check in on 30 meters and look for me because I will be looking for you. Thanks De kb9umt Don Peoria IL EN50dp moderator http://groups.yahoo.com/group/30meterPSKGroup/ Btw: station here at the time was kenwood ts-2000, MixW software, 20 watts, most contacts on my 80 mtr loop ladder feed-also using Butternut vertical and the best thing was I was operating remote on my patio with laptop wireless to the shack in the basementthat's the story/station here. --- In digitalradio@yahoogroups.com, Danny Douglas [EMAIL PROTECTED] wrote: Don, it is customary to give a freq which is the freq the software is showing on the waterfall. Frankly, it is next to useless for many of the spots that show a dial freq. All too many people do that and spot something like 14.070 or 14071 or 14069. when I see spots like that, I click on the spot, and there is NOTHING there, in most cases. I have used 4 different PSK software packages, and every one of them spots the same way - giving the waterfall freq - not the rigs dial freq. If you give a freq of 10133 - and I click on that spot, my sweet spot on the waterfall lies on THAT exact freq. It doesnt care what your rig readout is, nor what you offset is. You gave a freq, and it is looking for something on the waterfall at 10333. Every sound card has its own sweet spot where it outputs is maximum audio output, and lies within the high portion of the input curve as well. That sound cards offset is automatically added to the rigs dial freq, to get to the spotted freq. Or if you want to look at it that way - The program looks at the spotted freq, and subtracts (or adds) the sweet spots freq to the dial and the CAT places the rigs freq where it is needed, in order to get the signal in the correct spot on the waterfall. In my case, with an offset of 1 kc for this particular sound card, it places the above waterfall spot at 1 KC above (I use USB) the rigs readout, which in
