Re: [Elecraft] K2 - RTTY walk through, connections, and software
David The biggest problem with data modes on the K2 is getting the audio signal in and out. Several people have suggested points in the K2 where you can tap or inject signals. (see: the PSK section in General Modifications of LA3ZA Unofficial Guide to Elecraft K2 Modifications http://www.qslnet.de/member/la3za/K2/mod.html) I use a MicroHam Microkeyer. This provides isolation, switches the mic input to Line In (and back to you actual mic for SSB) and audio out of the K2 by a simple mod. Works well. I defined data mode filters centered at 1500 Hz and created filters for PSK and RTTY. Also, most digital software can trigger the K2 to transmit by serial command so you don't need a PTT hardwire line. Bob KD8CGH KX1, K2, K3 -- View this message in context: http://www.nabble.com/K2---RTTY-walk-through%2C-connections%2C-and-software-tp14377900p14496958.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 - RTTY walk through, connections, and software
Just for giggles, I connected the headphone jack of the K2 to the input of an external soundcard that I picked up yesterday. I have been able to receive RTTY and PSK. I was just curious, what all I need to do to transmit? I understand I need PTT and get audio on the mic connector. If I picked up the attenuator cable from radio shack, and then run it to mic audio, and used a switch for PTT, would that get me to where I could transmit? I have the 5.6k ohm resistor across the mic connections now, and I am using the Elecraft hand mic. I don't know if radio shack has audio transformers for isolation, but I do not have mic connectors (fosters?). I would have to get that first, not sure there are any around here. Would this setup get me on the air for now? I will setup a more formal arraignment once the K3 gets here. I did hear a guy in Texas, said he was doing his first RTTY on his new K3, talking to someone else, I think they had a K2. He said he was sending with paddles. You could tell it was a bit slower than the computer connection where someone was typing. But it came through fine. Merry Christmas - David Wilburn [EMAIL PROTECTED] K4DGW K2 S/N 5982 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 - RTTY walk through, connections, and software
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 David Wilburn wrote: I was planning on waiting till next year when the K3 gets here to play with RTTY, but after seeing all the activity this past weekend I am getting the itch. So I am trying to understand what I need to do to get the K2 on RTTY, or if I am better off to wait. Separate from these questions, I do need to re-visit the K2's alignment and filter settings. It could use some attention, as I have learned more since I performed the last ones after the SSB installation. The long term view is that the K3 will become the primary operating / contesting rig, and the K2 will be used as a back-up and to search for other stations / multi's while in the contest. So I need to be cognizant of how much I spend on a K2 only solution at this time. I do understand I need the following; * Computer, soundcard, and software * K2 needs an alignment, and turn on and setting of the RTTY filters * Interface between the computer and the K2 * RTTY software Anything I didn't consider? Nope, that pretty much covers it. 1. Don't scrimp on the sound card, you get what you pay for. 2. I've read through the RTTY filter setting how to's. Somebody needs to do a step by step like N0SS does for CW and SSB. 3. MicroHam makes some pretty good stuff. If they'd been around when I got into the digi side of things I probably would have purchased an interface from them instead of RigBlaster. Once again don't go cheap, you get what you pay for. I know there will be folks who say build your own. There is a world of difference between the home rolled interfaces and the commercial variety from a quality and feature set point of view. 3A. If you're going to do SSB contesting get a DVK capable software package or interface. The MkII MicroHam has one built in. I use the computer and N1MM. 4. Take a look at contesting software like Writelog($$$) or N1MM(free) which include RTTY capability, either through the MMTTY engine or natively. - -- R. Kevin Stover, ACØH -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHZ8Ui11jxjloa2wsRAos5AJ431BV4/siWW3OKE+Rm3jQuILDwfQCgln8w 7LYGSfPDS6Xmi2844kCgTy4= =9cgz -END PGP SIGNATURE- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 - RTTY walk through, connections, and software
I was planning on waiting till next year when the K3 gets here to play with RTTY, but after seeing all the activity this past weekend I am getting the itch. So I am trying to understand what I need to do to get the K2 on RTTY, or if I am better off to wait. Separate from these questions, I do need to re-visit the K2's alignment and filter settings. It could use some attention, as I have learned more since I performed the last ones after the SSB installation. The long term view is that the K3 will become the primary operating / contesting rig, and the K2 will be used as a back-up and to search for other stations / multi's while in the contest. So I need to be cognizant of how much I spend on a K2 only solution at this time. I do understand I need the following; * Computer, soundcard, and software * K2 needs an alignment, and turn on and setting of the RTTY filters * Interface between the computer and the K2 * RTTY software Anything I didn't consider? Currently my resources are a K2, and a deaf computer. So I know I need to put a sound card in the computer. On a side note, I plan to use the K3 for contesting, would I be better off to start looking at the MicroHam products, and plan on migrating that from the K2 to the K3? I am getting more and more into contesting, and I do not currently have a voice keyer, or a way of keying the CW on the K2 from the computer. I have some very nice responses from my CW K2 keying questions in my Keepers folder, so I'm covered there. Just starting to think about larger solutions that solve multiple issues at once. Filter Setup I have never done RTTY, so my search through the Elecraft archive was fruitful, but I didn't quite understand the results. Has anyone done a walk-through on the RTTY setup like currently exist from N0SS and W3FPR for SSB and CW? Don's page describes settings for RTTY with a TNC. I have seen notes in the archive about setting the RTTY mark and space. Being new to this, not sure what I need to do here, but I got the impression that I should set the passband for 1000 if possible, and 800 if not. Then use the RIT to try and tune the signal. Am I barking up the right tree here? Interface = I picked up Don's line out card to get the output for digital modes, but I am not going to have time to get that together, and revisit the alignments, between now and the ARRL RTTY activity in January. There are many quick and easy commercial interfaces, from low cost to quite expensive, but also with increasing capabilities. Once again, because of the ability to migrate it to the K3, and I am thinking about going ahead and investing in the MicroHam, if that meets the needs. Software With RTTY, do they do the logging with the RTTY software? Any recommendations concerning software? I have been using the N3FJP programs for contesting, and logging, but I am starting to use N1MM for contest logging. -- David Wilburn [EMAIL PROTECTED] K4DGW K2 S/N 5982 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
