Jim,
Yep, you got it! The problem is compounded by the fact the fact that most
digital mode programs, including MixW, allow you to select any signal visible
within their waterfall display, therefore allowing any offset to be used. So
much for your calculator! The operator would have to
Back when I built my Twin Cities and HAL ST-6 TUs,
transmitters with FSK FM'd the transmit frequency
back and forth between Mark and Space. A very
few transmitters had FSK. You usually had to dig
into the VFO and use a diode and capacitor to
shift the frequency.
Later, as a shortcut to getting
Of Ray Andrews
Sent: Tuesday, July 10, 2007 8:02 AM
To: flexradio@flex-radio.biz; Jim Dunstan
Subject: Re: [Flexradio] RIT cleared on click tuning- RTTY problem
Jim,
Yep, you got it! The problem is compounded by the fact the fact that
most digital mode programs, including MixW, allow you to select
Jim,
We no longer disagree over the definition of MCW. I was wrong. After checking
the FCC regs, they define it a bit more narrowly than I was. So, what the
SDR-1000 Flex-5000 generate is not MCW according to the FCC definition.
73, Ray, K9DUR
-- next part --
An
Mike,
You wrote: AFSK is not legal on HF.
You are only partly correct. Part 97 does not use or define the term AFSK,
only RTTY data. If you refer to AFSK as feeding audio tones into a SSB
transmitter, then it would be either emission type J2B (RTTY) or J2D (data)
both of which are legal
Tim Ellison wrote:
In actualality, the recently added enhancement #1114 submitted by Mark,
NU6X really needs to be modified to request FSK mode support in PowerSDR
rather than modifying the behavior of DIGIu and DIGIl modes, which is
essentially correct for ASFK. I think this would satisfy all
As a casual digital modes operator, I have been following this thread with
interest. Now I might as well clutter up the bandwidth some more and add my
thoughts on the subject. These are just that, thoughts. Some may be valid,
some may be totally erroneous, some may be laughable, but
At 10:57 AM 7/9/2007 -0400, you wrote:
As a casual digital modes operator, I have been following this thread with
interest. Now I might as well clutter up the bandwidth some more and add
my thoughts on the subject. These are just that, thoughts. Some may be
valid, some may be totally
No disrespect, but how can you tell the difference between an FSK RTTY
signal and AFSK RTTY signal, other than examining or inquiring the method
used to generate the signals? As regards CW vs MCW ... MCW is (at the
receiving end) a signal with a carrier and a keyed audio component; one
does
At 01:55 PM 7/9/2007 -0500, you wrote:
This isn't about the signal the other fellow receives and decodes. This
is all about how the signal is produced on our end and how other 3rd party
software integrates (or, more importantly, DOES NOT integrate) with the
PowerSDR console while producing it.
Jim,
No disrespect implied by your comments. I agree with you. When I stated that
the Flex radios generate AKSK rather than FSK, I WAS referring to the method
used to generate them. If the AFSK transmitter is well designed and properly
adjusted, the 2 signals are indistinguishable on the
mailto:[EMAIL PROTECTED] ;
pa0pvn(a)gmail.com ; pa0pvn(a)amsat.org .
Van: [EMAIL PROTECTED] namens Ray Andrews
Verzonden: di 10-7-2007 0:51
Aan: flexradio@flex-radio.biz; Jim Dunstan
Onderwerp: Re: [Flexradio] RIT cleared on click tuning- RTTY problem
Jim
Jim,
Do you ever use DX cluster or spot log software. While chasing DX
or during a RTTY contest the logging/contest software automatically sets
the rigs freq. When I broadcast a spot, the software will automatically
capture the rigs freq. By long established convention this is the MARK
freq
more exciting.
73's Mark NU6X Sedona, AZ
-Original Message-
From: Tim Ellison [mailto:[EMAIL PROTECTED]
Sent: Sunday, July 08, 2007 8:58 PM
To: flexradio@flex-radio.biz
Cc: Mark Mumaw
Subject: RE: [Flexradio] RIT cleared on click tuning- RTTY problem
In actualality, the recently
H, methinks the solution is just a few lines of code
away. Perhaps make the DIGI U and/or DIGI L be able to be
toggled between DIGI and RTTY (right click???), provide
the 2125 offset as the default (but be configurable).
All in all it seems like a 'low hanging fruit' feature
enhancement that
I don't mean to belabor the point but I am curious what the
'integration'
problem is with AFSK and third party software (I use MixW for the most
part
... but I have tried any number of other programs).
Jim, VE3CI
The issue is who knows or (worse) think they know what about what.
On MixW,
At 10:48 PM 7/9/2007 -0500, you wrote:
Do I know this is a big problem? No, not quite yet, though I have seen
enough in everyone's various postings to be mighty suspicious. RTTY and
PSK31 are clearly at odds for sure.
What I do suggest is that we lay all this out for at least several of the
Larry,
I'm not sure a fully understand your post. I have to use the XIT/RIT
in a non standard way to overcome a problem the PowerSDR has with RTTY.
I have no problem with clearing RIT on click tune but PLEASE !!! give me
another way to make PowerSDR compatible with the long accepted
PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Sunday, July 08, 2007 5:03 AM
To: Mark Mumaw
Cc: [EMAIL PROTECTED]; 'FlexRadio reflector'
Subject: RE: [Flexradio] RIT cleared on click tuning- RTTY problem
Larry,
I'm not sure a fully understand your post. I have to use the
XIT/RIT
in a non standard way
In message [EMAIL PROTECTED], Mark Mumaw
[EMAIL PROTECTED] writes
This concept of using the MARK Freq instead of the Carrier freq is
probably unique to RTTY. I don't know why it was established but
unfortunately it is here to stay. Almost all (if not all) modern rigs
have accepted this
Ian,
Since we are transmitting AFSK, when I transmit with one my other
radios, on lower SB, that still puts the mark freq in the same
place.. Now if I transmit FSK on the Pro, that's different, but
the transmitter in LSB still starts at 0 and goes to 3k bandwidth
for AFSK, I still
It appears that a recent change has been made to automaticly turn off
RIT when click tuning. I can see how this might make sense but it is a
REAL problem with how many of us have to use RTTY on the Flex. It is my
convention that the displayed freq. is the mark freq. not the carrier
freq. Every
07, 2007 9:19 PM
To: Mark Mumaw
Cc: FlexRadio reflector
Subject: Re: [Flexradio] RIT cleared on click tuning- RTTY problem
The preferred solution to this would be to provide a display offet
freq
for but DIGL and DIGU similar to the Click Tune Offset provided under
the GeneralOptions setup screen
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