[RTTY] Shift 170 -vs- 200

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Thu, 9 Jun 2011 10:12:41 -0700, "Van K7VS" <wa7fab at cdsnet.net> wrote:

>Why all the conversation about 200 vs 170 shift and a mod for the PK-232? 
> I thought everyone was running mmty these days?  Is there some reason 
>I should pull my PK-232 back out of the junk box???

REPLY:

I have a second computer with an audio spectrum display which also automatically
displays the shift numerically, and I have observed that somewhere around five
percent of stations are using 200 Hz shift. That figure of five percent is just
an estimate - it could be a bit more or a bit less, but it is definitely not
zero. FWIW. 

I have not compared MMTTY against the PK-232, but I have run it side by side
against a KAM and MMTTY wins hands down  when signals are weak and/or covered by
QRM and QRN. I suspect the same would be true of the PK-232. If anyone has
actually run them side by side, I'd be interested to hear the results. 

73, Bill W6WRT