> One guy trying to work a DX recently had 13 printable signals
> at the same time! I was using HamScope's ability to copy
> multiple signals, and there were 13 traces all with the same text.
That is not a matter of power level but of improperly setting the
audio drive to the transmitter. A high power signal cal be just
as clean as a QRP signal if the operator takes precautions not to
overdrive the radio and keeps his processor turned off.
> But...the worst problem is some PSK'ers using extremely high
> power! I watched some recently, and there were folk quite plainly
> saying they were running 600 watts!
So what? A clean signal is a clean signal. There is no difference
between a 600 watt state several thousand km away and the 10 watt
station on km down the road. Both will cause the same AGC issues
in my receiver if I am using a 2.4KHz receive filter.
I would rather deal with a clean 600 watt signal than an overdriven
and clipped 10 watt signal from a neighbor.
73,
... Joe, W4TV
> -----Original Message-----
> From: rtty-bounces@contesting.com
> [mailto:rtty-bounces@contesting.com] On Behalf Of pcooper
> Sent: Wednesday, February 14, 2007 8:59 AM
> To: rtty@contesting.com
> Subject: Re: [RTTY] PSK and waterfall
>
>
> Hi all,
>
> I don't think this topic is worth too much mileage here, but
> it has raised a couple of interesting points.
>
> RTTY interference is certainly going to cause loads of
> problems if it is that close to a PSK signal, but from what I
> have seen lately, RTTY is the least of their problems!
>
> I used PSK to work a few of the recent DXpeditions, as they
> were using PSK and not RTTY at the time, and for me - any
> digital mode is good when it comes to new ones!
>
> But...the worst problem is some PSK'ers using extremely high power!
> I watched some recently, and there were folk quite plainly
> saying they were running 600 watts!
> Perhaps if they could see what happens at the other end, they
> might drop it back a little. PSK was devised to be a low
> power mode, and is really excellent fun at 10 watts or less.
> Back when PSK first became available using Windows, I was
> regularly making contacts with less than one watt.
>
> One guy trying to work a DX recently had 13 printable signals
> at the same time! I was using HamScope's ability to copy
> multiple signals, and there were 13 traces all with the same text.
>
> Jim said they aren't using contest grade rigs. Well, I guess
> many don't, but that is why PSK is centred round specific
> frequencies. You can get an awful lot of PSK signals into a
> small but of bandwidth.
>
> It also raises another interesting point.
> PSK ops tend to split into two quite distinct groups.
> There is a proportion who use RTTY, and then use PSK to work
> DX, new ones etc etc, and have a bit of fun occasionally on
> another digital mode.
> Then there is another whole group, which tends to be larger
> (in my opinion) that ONLY run PSK, and maybe one or two of
> the other odd digital modes.
> It is mostly this latter group that simply download the
> software, and run with everything wide open, including power!
> Take a look at 20m PSK signals, and see just how many run the
> mode with CAPS lock on!
> If only they could work out that CAPS take longer to send!
> That alone gives me the impression they didn't read the manual.
>
> Sorry....... Just had to get that off my chest!
>
> 73 all
>
> Phil GU0SUP
>
>
>
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>
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