Re: [digitalradio] 144.???? Rtty
I was pretty sure the shift was 170, but just got e-mail confirmation back from the ham who was one of the main guys who set up the repeater and he confirmed we used 170 Hz. I would be very surprised if any RTTY repeaters still exist since packet was so much better and could do so much more. 73, Rick, KV9U John Becker wrote: >Rick >What was the shift used? In the St. Louis area there >was a 146.10 .70 repeater that used 850Hz shift. > >Since I have not lived in the area for some 20 years now >I have no guess if it's still on the air. > > > > > > > > > > > > > > >
Re: [digitalradio] 144.???? Rtty
Rick What was the shift used? In the St. Louis area there was a 146.10 .70 repeater that used 850Hz shift. Since I have not lived in the area for some 20 years now I have no guess if it's still on the air.
Re: [digitalradio] 144.???? Rtty
Hi Jerry, The repeater was located on a farmer's silo on a ridge somewhere between Trempealeau, WI and Winona, MN from what I recall. I did not have any problem hitting it with modest power and antenna from Onalaska, WI. It had pretty good coverage. The one thing about regenerative repeaters is that they are mode specific. If you had an RTTY regenerative repeater today, not that I would remotely recommend such a thing anymore, you would not be able to use any other digital modes, such as PSK31, MFSK16, Olivia, etc., since it would only regenerate the tones close to 2125/2295 Hz. I too had a Model 15. I paid $45 for it in the early 1980's and only had it for a few years and sold it with a homebrew TU for $5 (including the power supply loop for the teleprinter) due to the complete collapse of the older technology. One of my diehard teleprinter friends, who is still active, but won't try any new digital modes if it is not SSTV on 40 meters, used to have a Model 33 and he swore he would never get rid of it. Well, after a few years of taking up so much space in his shack, he somehow managed to get it downstairs and took it to the only place possible ... the local landfill. I'm sure it was very painful to do this. VHF RTTY would truly be an anachronistic mode today since it has been eclipsed by the weak signal modes that would work so much better on VHF. The weakest signal modes that have been tested to work deep into AWGN work well on VHF and higher frequencies. You don't see any RTTY "art" anymore come to think of it. It used to be fairly popular on VHF, because you could operate for long periods of time with no hits and it made for a nice picture. I especially liked the Abraham Lincoln and the Einstein ones:) 73, Rick, KV9U Jerry W wrote: >Rick, > >Was that regenerative repeater in the Chicago area? > >I remember someone used to send text "pictures" on one night. I have >one left that I sent to my father, it was a semi-truck and the title >was "Keep On Trucking". But the paper is getting brittle and falling >apart. Had a Teletype Model 15 and a TU I built from RTTY Journal, >was before the "ST-600" or "Mainliner", all tubes. I lived in North >Riverside, IL and had to get a eight elemet beam, aimed it west to get >good quieting on the receiver. > >Jerry - K0HZI > > > >
Re: [digitalradio] 144.???? Rtty
Rick, Was that regenerative repeater in the Chicago area? I remember someone used to send text "pictures" on one night. I have one left that I sent to my father, it was a semi-truck and the title was "Keep On Trucking". But the paper is getting brittle and falling apart. Had a Teletype Model 15 and a TU I built from RTTY Journal, was before the "ST-600" or "Mainliner", all tubes. I lived in North Riverside, IL and had to get a eight elemet beam, aimed it west to get good quieting on the receiver. Jerry - K0HZI On 2/25/07, KV9U <[EMAIL PROTECTED]> wrote: > This was something we did in the early 1980's prior to packet radio. > Even my homebrew TU worked well on VHF RTTY compared with its dismal > performance on HF. We had an active contingent of local hams who used > RTTY on meters. In fact, they even built and maintained a regenerative > RTTY repeater which made it possible for hams over a 50 or more mile > radius to use VHF RTTY. Some had autostart so it was possible to send > messages to print and hold on their system. > > Then packet came in like a roller coaster. In a matter of a few months, > the useage of the RTTY repeater went almost to zero. The RTTY owners > decided that they would run the repeater for "a long time." Two weeks > later they shut it off. Then it was quite a sea change as most active > hams had a packet station always on for e-mail. Today, all we have left > is the internet since almost all interconnecting links, BBS's, are gone. > Another sea change, although the complete opposite of the one in the > 1980's when for a short time VHF digital was one of the most active > modes for radio amateurs. > > I had hoped to get some interest going with VHF digital, but have pretty > much given up as there just are not any hams in my area willing to do > this. Out of 150 hams in our area, you would be hard pressed to find > more than two or three who really have much interest in digital other > than perhaps contesting with RTTY. > > With more hams likely moving toward HF, it may be possible to find some > locals trying that out, but in rural areas like I live, it is just not > that common. > > 73, > > Rick, KV9U
Re: [digitalradio] 144.???? Rtty
I found that VHF ASCII to be just as good a mode as RTTY and it provided for better print without switching between caps and numbers. I ran VHF ASCII at 300 BAUD and 1200 baudbut that was 20 years ago. Walt/K5YFW va7s wrote: > just curious anyone interested in trying vhf rtty > > > Ian VA7SW > > > > > > Announce your digital presence via our DX Cluster > telnet://cluster.dynalias.org > > Our other groups: > > http://groups.yahoo.com/group/dxlist/ > http://groups.yahoo.com/group/themixwgroup > http://groups.yahoo.com/group/contesting > http://groups.yahoo.com/group/wnyar > http://groups.yahoo.com/group/Omnibus97 > > > Yahoo! Groups Links > > > > >
Re: [digitalradio] 144.???? Rtty
This was something we did in the early 1980's prior to packet radio. Even my homebrew TU worked well on VHF RTTY compared with its dismal performance on HF. We had an active contingent of local hams who used RTTY on meters. In fact, they even built and maintained a regenerative RTTY repeater which made it possible for hams over a 50 or more mile radius to use VHF RTTY. Some had autostart so it was possible to send messages to print and hold on their system. Then packet came in like a roller coaster. In a matter of a few months, the useage of the RTTY repeater went almost to zero. The RTTY owners decided that they would run the repeater for "a long time." Two weeks later they shut it off. Then it was quite a sea change as most active hams had a packet station always on for e-mail. Today, all we have left is the internet since almost all interconnecting links, BBS's, are gone. Another sea change, although the complete opposite of the one in the 1980's when for a short time VHF digital was one of the most active modes for radio amateurs. I had hoped to get some interest going with VHF digital, but have pretty much given up as there just are not any hams in my area willing to do this. Out of 150 hams in our area, you would be hard pressed to find more than two or three who really have much interest in digital other than perhaps contesting with RTTY. With more hams likely moving toward HF, it may be possible to find some locals trying that out, but in rural areas like I live, it is just not that common. 73, Rick, KV9U va7s wrote: >just curious anyone interested in trying vhf rtty > > >Ian VA7SW > > >
Re: [digitalradio] 144.???? Rtty
Sure ..but if I hear VA7-land on 2 metres I'll eat my rig! Andy K3UK On 2/25/07, va7s <[EMAIL PROTECTED]> wrote: just curious anyone interested in trying vhf rtty Ian VA7SW -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com
[digitalradio] 144.???? Rtty
just curious anyone interested in trying vhf rtty Ian VA7SW
