[RTTY] Was Re: Re: XE contest @ 75 baud ... now Next Gen digital front end software!

[Kok Chen]

On Feb 7, 2010, at 2:15 PM, k3mm at verizon.net wrote:

> We have had CW skimmer for several years now...it's time for digital skimmer!

It is not a matter of software -- most software modems *already* have a digital skimmer for PSK31.  It is a matter of hardware -- the rig needs to output a 50 kHz (at least 20 kHz, anyway) wide bandpass for it to be useful for RTTY.  That restricts it use to receivers like the SoftRock and K3+LP-PAN, and the like.

Even PSK31 piles have extended more than 2.4 kHz.   But in general, the PSK31 "skimmers" are fun to use.  Most of them have a 'search" option for highlighting CQ and such things.

> Building on that would be the transceiver version that will S&P multiple modes and speeds on the fly!  Hard to copy?  Downshift to a slower speed and/or PSK...his software will recognize and copy it automatically no matter what!

The problem with something like the skimmer is that once its use is widespread, its use will be restricted by contest organizers, just like the CW skimmer was banned.  People might be reluctant this time around to share what they have built (would you share your stacked Yagis? :-).

73
Chen, W7AY