Hello Mike, Monday, May 28, 2001, you wrote: Mike> Thanks for listening. Do you have the time and power schedule of the Mike> multimode beacon near 28.700MHz?...
3412
F6CTE@...
Jul 1, 2001 8:24 pm
Hello to all OM and SWL Until the 11th of july (after what, it's the beach!), I send PSK10 at 20h00 GMT (UTC) on 10145 +/- 1 KHz the wednesday and the friday. ...
3413
Ken - VE5KC
ve5kc@...
Jul 1, 2001 9:00 pm
For those not aware of this here is another mode being tested that could account for some of the other different sounds we find while tuning the bands. The...
3414
George, W5YR
w5yr@...
Jul 1, 2001 9:59 pm
I spent about 30 minutes this morning talking with my son, K5SR, in Sarajevo, Bosnia via my AT&T ISP using the Yahoo Voice Messenger software. He has rather...
3415
Tenty
d.tenty@...
Jul 2, 2001 7:07 am
This is already done.. I did already digital voice over 9600 baud tcp/ip UHF 5 years ago but you can't use the same over HF as you need much stronger...
3416
Vince
wa.tworsx@...
Jul 2, 2001 2:29 pm
I need translation of the below quoted message. At one time there was a feature on the webpage http://www.geocities.com/mmhamsoft/ . but I have not found it...
3417
Bob Wittmuss
bobwittmuss@...
Jul 2, 2001 8:04 pm
Vince, Can he search for the page with Altavista? If so he could use the translate feature they offer. 73, bob-KB8ZJH Vince <wa.tworsx@...> wrote: I...
3418
Andrew Nicholson
andrew@...
Jul 2, 2001 9:34 pm
Hi There Translation is on the Following altavista URL. It has a little yellow thing that looks a little like a pig next to it on the actual site. Regards Andy...
3419
jivey
jivey@...
Jul 2, 2001 10:11 pm
Joe Ivey W4JSI ... From: ARRL Web site <memberlist@...> To: <jivey@...> Cc: <Subscribed ARRL Members: ;> Sent: Monday, July 02, 2001 16:07...
3420
Bill Gerhold
billg@...
Jul 3, 2001 1:53 am
The reason is BANDWIDTH. Your modem operates at 56k or faster. To put that much data on the air at once would mean a signal just as wide. You do not want...
3421
George, W5YR
w5yr@...
Jul 3, 2001 2:31 am
I appreciate the lesson, Bill, but read my posting again. Everything that modem was putting out was going out over a 300-3000 Hz twisted-pair telephone line....
3422
Tarakesh Nagajjanavar
tarakesh_n@...
Jul 3, 2001 3:52 am
Military communication does use SSB radios for digital voice communication. Modem which can work for telephone line will not work for radios. This is basically...
3423
George, W5YR
w5yr@...
Jul 3, 2001 4:26 am
Yes, I did, tarakesh, and that is the sort of discussion I am trying to stimulate. I am aware that the specific techniques used to accommodate the properties ...
3424
Ken - VE5KC
ve5kc@...
Jul 3, 2001 8:09 am
This is something I have thought about this for many years. I expected to see develop much sooner as digital sound progressed in the consumer market and the...
3425
Andrew J. O'Brien
obrienaj@...
Jul 3, 2001 11:19 am
... From: "kc4elo-sc" <kc4elo-sc@...> To: "Zakanaka" <zakanaka@yahoogroups.com> Sent: Tuesday, July 03, 2001 6:30 Subject: [Zakanaka] New version now...
3426
Vince
wa.tworsx@...
Jul 3, 2001 12:52 pm
TNX guys. I found the altavista translator URL via the mmhamsoft LINKs page . 73s and Have Fun, de ~ Vince ~ WA2RSX - IOTA NA-026...
3427
Samuel Hunt
SamuelHunt@...
Jul 3, 2001 1:10 pm
Because you need a S:N of about 30dB. And, It's got to be free from phase, frequency and amplitude variations. It's also got to be NO frequency variation,...
3428
Nino Porcino
iz8bly@...
Jul 3, 2001 3:31 pm
Digital voice on HF: http://www.chbrain.dircon.co.uk/dvhf.html just my 2 cents - Nino IZ8BLY...
3429
cherry@...
Jul 3, 2001 4:02 pm
George, it is not possible to cram 56 KHz into a 300-3000 Hz SSB voice channel. Phone lines are actually wider than 3KHz. Multi-dimensional modulation is being...
3430
Samuel Hunt
SamuelHunt@...
Jul 3, 2001 5:14 pm
Shouldn't it be lots of Lira?! It's amazing how that saying gets around. I think I've said it a few times, too, and we use £ & pence. Sam ... From: Nino...
3431
Robert W. Schafer
w5iua@...
Jul 3, 2001 5:47 pm
Actually, "phone lines" are not wider than 3KHz. A/D converter filtering in channel banks and other equipment cutoff the voice channel high end typically at or...
3432
George, W5YR
w5yr@...
Jul 3, 2001 6:22 pm
Thanks, Robert - somehow I must improve my communications skills. Someone (you) finally got my point! <:} 72/73, George W5YR - the Yellow Rose of Texas...
3433
Hylton Conacher (ZR1H...
hylton@...
Jul 3, 2001 6:36 pm
George, Hear hear!! We may have had our differences but this is a good idea. 73 de ZR1HPC Hylton...
3434
Milton Cram
w8nue@...
Jul 3, 2001 6:51 pm
Hello All According to Shannon's Theorem, the capacity of a channel is dependent on the signal to noise ratio. For example, if the signal to noise ratio is...
3435
TOM
lockman@...
Jul 3, 2001 9:10 pm
Tom G7CIT Just a thought on sound cards v modems do modern Dolby type surround sound card have a pure digital output for connection to high end amps? Perhaps...
3436
George, W5YR
w5yr@...
Jul 3, 2001 10:16 pm
Thanks, Hylton - good to hear from you again. 72/73, George W5YR - the Yellow Rose of Texas QRP-L 1373 NETXQRP 6 Fairview, TX 30 mi NE of Dallas in Collin...
3437
Tenty
d.tenty@...
Jul 4, 2001 3:01 am
If you want to read about about recommendation ITU-R BS.1514 for digital broadcasting at the shortwave bands (and MW) visit digital radio mondiale at...
3438
Tarakesh Nagajjanavar
tarakesh_n@...
Jul 4, 2001 4:09 am
Shannon's Theorem is valid for AWGN(additive white gaussian noise) channels. But HF channels are not AWGN channels. But still, Shannon's theorem gives an idea...
3439
Ken - VE5KC
ve5kc@...
Jul 4, 2001 4:32 am
Hello Nino, This is where the original topic started from and the same link was included.. It looks like that they are using add on hardware for their digital...
3440
Tim Makins, EI8IC
ei8ic@...
Jul 4, 2001 6:43 am
... From: "Vince" <wa.tworsx@...> ... If you really want to have fun, and some laughs too, try THIS translation site : http://rinkworks.com/dialect/ ...
