I thought about replying to this and I wrote 2 long replies but what could I say that hasn't already been hashed out before?
Look at this way: An SCS TNC _IS_ COTS hardware. It works great. And you know what, I got what I paid for. Its one damn good TNC. I didn't have to make any cables. I just plugged it in and I was ready to go. Upgrading is a breeze. But it also has another plus, support. Not just tech support but product upgrades. People wanted APRS and now it is available. I wouldn't be surprised to see an SCS product that had a PC104 computer inside to run winlink or packlink/telpac. At that point you'll have a computer with a built in DSP. Probably for about $1K. Charlie Crizer, KF4MNE Fairfax County (Alexandria) Virginia, US Home QTH: 38-47.96N / 77-05.17W - FM18kt [EMAIL PROTECTED] [EMAIL PROTECTED] - Winlink2000/Airmail -----Original Message----- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of DuBose Walt Civ AETC CONS/LGCA Sent: Friday, September 15, 2006 14:00 To: digitalradio@yahoogroups.com Subject: RE: [digitalradio] Re: ARQ sound card modes Dave, You are seeing the point that I have been making for 4 years now. $1100 for a "TNC?" As I have tried to point out to a number of ARRL Directors, you aren't going to find many hams willing to shell out $1100 or even $800 for a "TNC" to run a mode that will work with WinLink or any messaging system...and I don't think this is the nature of amateur radio. Few probably remember or perhaps have never even seen the wonderfull Collins solid state HF transceiver and receiver/transmitter that they sold for a short time. Beautiful...but who could in the 1970's who would pay $4000-$5000 for a 100 watt transceiver...even if it had the Collins name on it...and few were sold and the line was dropped. I don't even remember seeing it in QST...just when Collins showed it to the Air Force. The solid state 3-30 Mhz receiver did make its want into the Air Force inventory at a small level. So I can purchase/build a Pent. dualcore, 2.8 GHz motherboard with 1 GB RAM and 800 MHz buss, etc. and 160 GB HDD, etc for $400-$500 and add one or two soundcards, for a coule hundred more. I can even get a daughter board that is a complete stand-alone computer running a 900 MHz processor for $200. If MS operating systems are the limiting factor, then try some other operating system. Let's push the envelop. Stay opensource and COTS as much as possible...its the ham radio way. 73, Walt/K5YFW -----Original Message----- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] Sent: Friday, September 15, 2006 12:35 PM To: digitalradio@yahoogroups.com Subject: [digitalradio] Re: ARQ sound card modes I Googled "SCS Pactor buy" to get you a link or two, and was surprised to see these modems selling for $1100 rather than $300. A dedicated PC implementation would make more financial sense than I thought! Anyway, here's some links: http://www.marinenet.net/Radio%20Modems.htm http://www.landfallnavigation.com/pactor.html http://www.docksideradio.com/ptcii.htm There's a couple available on EBay for $700-$800. 73, Dave, AA6YQ --- In digitalradio@yahoogroups.com, "DuBose Walt Civ AETC CONS/LGCA" <[EMAIL PROTECTED]> wrote: > > Where can I get an SCS Pactor "TNC" for $300 with the license to run Pactor III? I WILL buy one. > > Walt/K5YFW > > > > -----Original Message----- > From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] > Sent: Thursday, September 14, 2006 11:28 PM > To: digitalradio@yahoogroups.com > Subject: [digitalradio] Re: ARQ sound card modes > > > >>>AA6YQ comments below > > --- In digitalradio@yahoogroups.com, John Becker <w0jab@> wrote: > > > > I knew that. > > So is my AEA TNC that I got back in 1988.... > > > > Bottom line - there is *NO* computer running software with out > > any hardware (TNC) that will do the same right? > > >>>Wrong. SCAMP, a protocol that employs ARQ to attain reliable > delivery, was implemented on a Windows PC with a soundcard rather > than an outboard TNC. SCAMP was specifically design to tolerate the > long delays caused by the lack of pre-emptive scheduling in Windows. > > >>>Could Pactor-3 be implemented on a modern PC with a soundcard? > Yes, but not with Windows as the operating system. Has anyone done > this? No -- it would make no economic sense when you can buy a TNC > for $300. > > >>>Most TNCs are based on microprocessors, some augmented by digital > signal processors; both of these devices are controlled by software. > While such systems certainly incorporate hardware, they are not > hardware-only solutions. > > 73, > > Dave, AA6YQ > > > > > > > > Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org > > Other areas of interest: > > The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ > DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) > > > Yahoo! Groups Links > Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links [Non-text portions of this message have been removed] Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! 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