Re: [digitalradio] 5 digital modes you need, the only 5.
Hi Andy What about ALE400 ARQ ? It is great for those who need a robust arq mode. 73 de LA5VA Steinar Andrew O'Brien wrote: > With the varying discussions about the performance of specific modes , and > the comments about lack of activity for some modes, I present the following > list of 5 modes the digital mode ham should have...and probably all you > really need. > > 1. PSK31 (and other variants up to PSK250) , plenty of activities both brief > and "rag chew" , activity 24 hours per day. Use PSKmail to send email if you > wish. Consider QPSK for tougher conditions . ARQ PSK available in FL-digi > for emcomm work (available for free via Winwarbler. FL-Digi , DM780, > Multipsk, Pocket PSK and MMVARI. > > 2. RTTY still DX to be had via this mode and contesting if you like contests > ((available for free via Winwarbler, FL-Digi , DM780, Multipsk, MMTTY, and > MMVARI. > > > 3. JT65A. If low power DXing is you thing, this is your mode. Brief > exchanges of signal reports and location, no "conversation" mode (available > for free via WSJT, Multipsk, and soon to be released JT65-HF) > > 4. Olivia , weak signal capable plus keyboard conversations.Wide and narrow > versions to vary with conditions ((available for free via FL-Digi , DM780, > Multipsk, ) > > > 5. Feld Hell. Good speed, surprising robust, a fair amount of activity, > easier on your duty cycle that other modes, not good after a couple of beers. > ((available for free via FL-Digi , DM780, Multipsk ) > > > That's it, all you need. Yes, I left out MFSK16 despite it being a good > mode. It is too "fusy" at times and most things you can do with MFSK16 ,you > can do with an Olivia variant. MT63 is effective but just too much of a > bandwidth hog, hardly any activity. If you don't want the super robust brief > exchanges of JT65A, you could substitute DominoEX but you could go a week > without hearing anyone else. MFTT at quarter speed seems useful, has promise. > > I won't count ALE as a specific "mode" but will still argue that all hams > should be ALE capable. Still a great concept. Pactor..well great at P3 but > costs too many Euros. The rest can be great fun, but if you want just five, > the above are what you need. > > Andy K3UK > > >
Re: [digitalradio] 5 digital modes you need, the only 5.
It's still a fun mode to use. I've wondered perhaps if someone couldn't invent a 21st century Morse, perhaps using ternary psk, the 3rd phase being the "gap" in the chars? It might even be possible to still send it by hand with an interface but you'd obviously need a computer for decoding. 73 Sholto. David wrote: > > > > Hi yes Sholto some forget about that one > digital ...on and off with a key... > have to use Digits to make it work > on either Key ..Keyer or Keyboard > > Hi Hi > > 73 David VK4BDJ > > Sholto Fisher wrote: > > > > > > Don't forget CW the first digital mode :) > > > > I know...I know... > > > > Sholto > > K7TMG > > > > > >
Re: [digitalradio] 5 digital modes you need, the only 5.
Hi yes Sholto some forget about that one digital ...on and off with a key... have to use Digits to make it work on either Key ..Keyer or Keyboard Hi Hi 73 David VK4BDJ Sholto Fisher wrote: > > > Don't forget CW the first digital mode :) > > I know...I know... > > Sholto > K7TMG > >
Re: [digitalradio] 5 digital modes you need, the only 5.
Don't forget CW the first digital mode :) I know...I know... Sholto K7TMG
[digitalradio] 5 digital modes you need, the only 5.
With the varying discussions about the performance of specific modes , and the comments about lack of activity for some modes, I present the following list of 5 modes the digital mode ham should have...and probably all you really need. 1. PSK31 (and other variants up to PSK250) , plenty of activities both brief and "rag chew" , activity 24 hours per day. Use PSKmail to send email if you wish. Consider QPSK for tougher conditions . ARQ PSK available in FL-digi for emcomm work (available for free via Winwarbler. FL-Digi , DM780, Multipsk, Pocket PSK and MMVARI. 2. RTTY still DX to be had via this mode and contesting if you like contests ((available for free via Winwarbler, FL-Digi , DM780, Multipsk, MMTTY, and MMVARI. 3. JT65A. If low power DXing is you thing, this is your mode. Brief exchanges of signal reports and location, no "conversation" mode (available for free via WSJT, Multipsk, and soon to be released JT65-HF) 4. Olivia , weak signal capable plus keyboard conversations.Wide and narrow versions to vary with conditions ((available for free via FL-Digi , DM780, Multipsk, ) 5. Feld Hell. Good speed, surprising robust, a fair amount of activity, easier on your duty cycle that other modes, not good after a couple of beers. ((available for free via FL-Digi , DM780, Multipsk ) That's it, all you need. Yes, I left out MFSK16 despite it being a good mode. It is too "fusy" at times and most things you can do with MFSK16 ,you can do with an Olivia variant. MT63 is effective but just too much of a bandwidth hog, hardly any activity. If you don't want the super robust brief exchanges of JT65A, you could substitute DominoEX but you could go a week without hearing anyone else. MFTT at quarter speed seems useful, has promise. I won't count ALE as a specific "mode" but will still argue that all hams should be ALE capable. Still a great concept. Pactor..well great at P3 but costs too many Euros. The rest can be great fun, but if you want just five, the above are what you need. Andy K3UK
Re: [digitalradio] psk31 frequency
I think that the PSK part of 20M is so crowded these days that people spread out. They also do not want to be on 14070.15 and be too far out on the extremes of their rig's passband since it impacts the efficiency of the signal Andy K3UK On Fri, Apr 24, 2009 at 9:06 PM, ve3wej wrote: > > > Whatever happened to the psk being at **070.15 usb on 20 meters, etc i > see the dx spots all over the place 71 72 73, usb lsb > > i know with the sound card, clicking on the vertical mark is easy, but it > seems that the original way was to be at 14070.15, and select the hz freq. > then you could spot at the hz freq and everyone would be at the same freq > > just wondering >
[digitalradio] psk31 frequency
Whatever happened to the psk being at **070.15 usb on 20 meters, etc i see the dx spots all over the place 71 72 73, usb lsb i know with the sound card, clicking on the vertical mark is easy, but it seems that the original way was to be at 14070.15, and select the hz freq. then you could spot at the hz freq and everyone would be at the same freq just wondering Dave ve3wej/ve3ie
[digitalradio] Re: Old MFJ 1272B TNC/Mic switch circuit or manual?
Dave's help was just what I needed, my thanks to others who responded. As it happened I had disassembled the unit to take pictures of both the bottom and top of the circuit board to help me try to regenerate a schematic, so I was ready to send a picture immediately upon reading Dave's reply. 73, Al N1AW Amherst, MA --- In digitalradio@yahoogroups.com, "Dave wej" wrote: > > I have several types here, can you email a picture of the inside for me > > Dave Garber > VE3WEJ/VE3IE ve3...@... > > > - Original Message - > From: Al Woodhull > To: digitalradio@yahoogroups.com > Sent: Tuesday, April 21, 2009 11:30 PM > Subject: [digitalradio] Old MFJ 1272B TNC/Mic switch circuit or manual? > > I have an old MFJ 1272B that I bought at a flea market. There have > evidently been major changes in the design of units sold under this > model number over the years. The manual that is currently available > on the MFJ website is not useful for my older one. ...
[digitalradio] Re: "finding someone to have a qso with"
--someone. > > By the way, what is the LOTW group intended to be used for? > > 73, > > Rick, KV9U > > Rick, I intended it to be used for any LOTW sked pursuits but it is REALLY popular because of the Triple Play LOTW award. LOTS of fun. Andy K3UK
[digitalradio] Olivia
What happened to Olivia??? I hear nobody on 14106.5 anymore . . . B. A. Thunman w8...@mindspring.com EarthLink Revolves Around You.
[digitalradio] Olivia
wahat happened toOlivia? I hear nobody on 14106 anymore . . . W8ISG/Bo B. A. Thunman w8...@mindspring.com EarthLink Revolves Around You.
Re: [digitalradio] "finding someone to have a qso with"
I always assumed that it had a lot to do with the amount of activity vs. finding someone. CW or other operators wanting to make a specific contact on a band or location, such as for an award, need some way to find a similar operator. There is a smaller subset of digital hams and those digital hams mostly use PSK31. They only have need for extra help if they want to go beyond PSK31 and work less commonly used modes or for awards perhaps? No matter how much we have tried to promote the newer modes, some of which have special attributes such as being far more robust than PSK31, have ARQ capability that is not available to keyboard chat modes, etc., the reaction I have personally gotten from other hams is that PSK31 is good enough and when it doesn't work, they do other things. As a recent example, a ham from a nearby community is was introduced as the digital expert so I was very interested in seeing if he would be interested in working some of the new modes, especially because a large focus of his group was with public service communication. I was quite surprised when he seemed almost annoyed with me for even suggesting that any other digital modes exist than PSK31 or should even be used on the ham bands. Since most digital hams use only PSK31, and there are well known watering hole frequencies on the popular bands, they never need any help with internet coordination. If a given band is open, they can almost always find someone. By the way, what is the LOTW group intended to be used for? 73, Rick, KV9U Andrew O'Brien wrote: > -My sentiments exactly Bob. I have tried and tried over the years and cannot > figure out why the digital part of the K3UK Sked page is not used more. As > you know, the SKCC and LOTW K3UK Sked pages are used constantly. The irony > is that the SKCC and LOTW pages were established as after thoughts, the > digitalradio sked page was my first goal and the initial design code was > provided gratis by a member of this group N8FQ. > > Another irony is that the LOTW page that you suggested is quite often the > group that spurs people to try digital modes like Feld Held for the first > time. There are more digital mode "skeds" made via the LOTW page than the > digitalradio sked page. > > Andy K3UK > >
