I just searched for usb sound cards and used a shopping network, like nexttag, though I do not remember which one.... The device was $9.95 US and $4.50...
Steve, If you have all the MIL-STD-188-110 features, let me ask four questions. 1) What is the maximum baud rate or symbol rate of the single PSK carrier? 2)...
Can you explain how it is that you can run a symbol rate of 2400 (baud) with 188-110A and it works very well running at this extremely high speed for HF? And...
... Walt, From a regulatory standpoint I don't think there is a problem. I think that Pawel Jalocha SP9VRC was concerned about occupying too large amount of ...
I wasn't picking on Pawel at all...I just used MT63 as an example. My Point was that if you applied a 300 baud/symbol rate to one carrier/tone-tone/carrier and...
The 2400 and 4800 baud is a composite baud rate for the mode/protocol NOT the discrete baud rate of any individual component of the waveform. Walt/K5YFW ... ...
... Walt, I understand. My diatribe was to make the point that the occupied bandwidth has a bearing on the general acceptance of a mode. 73, Mark N5RFX...
... Can you explain further? I saw that: "MIL-STD-188-110A serial tone modem is just that, a single PSK carrier frequency that by the standard is locked at...
Hi Walt, ... There is a SINGLE carrier. The standard symbol rate is fixed at 2400bps all the time. Some hardware and software implementations have allowed for...
Oh yes...for many/most folks and even me when I am chatting or even sending a file. But when I am in a disaster operation, I need to send BIG files and FAST,...
After further reading I understand now how it works. The symbol rate is 2400 Baud. The coded (rate 1/2 convolutional ) data rates have differing interleaving...
... In the case of 40M, if each "data channel" (mode bandwidth) is 5 KHz wide, there would be room for 25 QSOs. I RARELY hear 25 QSOs between 7000 and 7150...
Hi Mark, The Mil-Std-188-110B serial (single-tone) mode use M-ary Phase-Shift Keying (PSK) on a single carrier frequency (1800hz standard) as the modulation...
Hi Mark, I just seen this after sending you a reply... You go the idea, you actually put it forth simpler than I did as gave you too much detail, but yet just...
Walt, There are typically "layers" of stations on many of the bands. It depends upon your antenna system and to a certain extent, operator skill, when...
Hi Rick, ... See my reply to Mark. ... There is a lot of differences here, if you focus on the MT-63 part of your query that is more like the FSK aspect of...
... during coronal mass ejections. Over the last couple of evenings, there have been 10-15 stations in 40m PSK segment alone, with at least 15 CW stations...
Hi Dave, I really could not say for sure based on your criteria, depending on what you mean as asked. However using ALE and an appropriate Global Allcall or...
... during coronal mass ejections. Over the last couple of evenings, there have been 10-15 stations in 40m PSK segment alone, with at least 15 CW stations...
If propagation allows 1000 amateur ALE users to hear each other on the same pilot channel, and they are all sounding for 10 seconds every hour, then wouldn't...
I've noticed a problem with lots of hams...they want to talk to another ham 50-150 miles away and they try to use a verticle, mobile or G4RV, Craolina Windom...
Hi Dave, Regarding the Sounding aspect of life, not all stations need to be Sounding and not all stations need to be Sounding once per hour. Sounding can be...
Mark, I think I understood you to say earlier that the baud rate is based upon the total waveform. I am having difficulty grasping what that really means. I...
Walt, While I agree with most of what you wrote, there has been so much press and information the past few years that I would expect most hams to have a pretty...
... I would look at the data, and see how it is modulated into an analog waveform. For FSK we know that a 1 produces one symbol, and a 0 another symbol....
On HF, I have used the fast PSK modem built into PCALE for sending JPG and GIF image files in the 20 meter phone band. FS-1052 / MIL STD 188-110. If anyone...
Bonnie, I will give it a shot if we can get a link between us. I can start scanning the 20 meter channels. 73, Mark N5RFX ... [Non-text portions of this...
OK, Mark. I saw WA3MEL linking with you earlier on 20m, but could not see your sigs at that time. I just now linked with WB6MLC right now on 14342.5kHz. Bonnie...
