[pskmail] Re: 300 Baud Rate in the USA

  • From: Bernard Dekok <kc9sgv@xxxxxxxxx>
  • To: pskmail@xxxxxxxxxxxxx
  • Date: Mon, 23 Jan 2012 16:51:37 -0600


Baud rate can't be WPM / 1.2
Winmor 8 Car 16PSK is 94 baud, at 3285 WPM on 1600 HZ bandwidth.
See the Excel spreadsheet on this thread.
Yep, 3285 words per minute.
Try doing THAT on CW.....=)

I vote for the Winmor virtual TNC as another mode option for PSKMail....


On Mon, Jan 23, 2012 at 3:06 PM, David Kleber <kb3fxi@xxxxxxxxx> wrote:

> I think I recall seeing someone post somewhere that BPSK500 goes over the
> US throughput limit, but I've never seen what appears to be a well detailed
> explanation. Also, there seems to be varying opinions on how to calculate
> baud rates from wpm (wpm divided by 1.2?). It's all quite confusing.
> I wish we could just go to regulation by bandwidth with a separate
> playground for unattended ops. The robots in any bandwidth need to have
> their own allocations which makes sense for anyone on either side of the
> fence (whether you hate the robots or love them).
> We really need to get rid of the throughput limitation, which contradicts
> one of the key reasons for our amateur radio frequency allocation which is
> the advancement of the art (and technology).
> BTW, BPSK500 leaves a bit to be desired unless you're on a near full
> quieting path.
> -Dave, KB3FXI
>   ------------------------------
> *From:* Bernard Dekok <kc9sgv@xxxxxxxxx>
> *To:* pskmail@xxxxxxxxxxxxx
> *Sent:* Monday, January 23, 2012 3:49 PM
> *Subject:* [pskmail] 300 Baud Rate in the USA
> Ok,
> So I read up a bit on this here in the PSKMail archives.
> 300 Baud max on the HF bands in the USA.
> So what is the PSKMail baud rate at 500 HZ ?
> Why is PSK500 not allowed in the USA, when Winmor can use the 500 HZ mode
> *unattended* ?
> Winmor clients can indeed use the 1600 HZ mode if the station is *attended
> *.
> Some USA Winmor servers (RMS's), even run at 1600 HZ, in "attended" mode.
> What is interesting is that the Winmor baud rate is only 93 baud on 1600
> HZ.
> See here and download "*Winmor Rate*":
> http://www.winlink.org/WINMOR
> Could we run a PSKMail PSK500 server in "attended" mode in the USA ?
> How about "unattended", but under control operator/sysop control via
> remote ops (say by VHF or Iphone/Echolink) from the lawnmower in the yard
> while indeed mowing the lawn ?
> We need more and faster PSKMail servers in the USA.
> Bernie,
> Chicago.

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