Jerry,
Flex Radio's PowerSDR is notorious for software latency ... I would
give up COMM PTT entirely and forget about VAC. Treat the box as
if it were a conventional radio and use the analog PTT/audio In/Out
from MK2R+. The only question I would have (not having played with
a 5000) is whether you can actually get to both analog audio streams.
73,
... Joe, W4TV
On 4/29/2013 7:51 PM, Jerry Pixton wrote:
Well, now when I read Joe's message I tried to set the Writelog CAT port
to none. That did not work. Just now I tried to set the WinKey port to
none. But I got about the same response. Haven't thought how to get more
quantitative measurements. Just know that my signal is going out much
later than I want.
With the Flex 5000 there seems to be noticeable delay - so much so that
I have tried to judge where the calling station would end and start my
message early.
Watching my second hand I have almost over one second before I get audio
or RF power.
There is definitely a latency delay that builds up in PwrSDR for the
Flex. It could be in the VAC pipeline - I recall from my early attempts
that when I use the USB Audio CODEC in my mK2r+ that the responses were
much better - going from digital to analog and back to digital was
faster than staying in digital????
Now it looks like there may be more sources to look at???
Jerry, W6IHG
On 4/29/2013 9:01 PM, Gary AL9A wrote:
I think the PTT delay culprit has been found! I had previously checked
my WL Ports setting to make sure the radio PTT was set to Off so there
wouldn't be a conflict between software and hardware PTT. After reading
through Don's comments I reread Joe W4TV's comments below in reply to my
first query about the PTT delay. As I was in the middle of two
different contests, the SPDX and the BARTG 75, I didn't give the Joe's
note the thorough reading and thought it deserved. However, upon
further review...
Joe refers to XMMT.ocx as "... asserting PTT on Winkey (all mode PTT)"
and ended that I could check it "...by temporarily setting the WriteLog
port to 'None' in Router's Ports tab." At first I thought Joe was
talking about the FSK port assignment for WL in the router Ports tab,
but then it struck me he may have meant the Winkey port assignment
setting. So I set my Winkey port, which is normally COM4, to none and
changed the TU type back to XMMT.ocx and reset up the MMTTY settings.
Ta Da - no PTT delay with the Winkey (all mode PTT) port disabled! Just
to check I reset the Winkey port back to COM4 and when sending with
XMMT.ocx the delay is back.
So apparently the secret for those of us who use the microHAM router and
Winkey is to disable the Winkey port setting when running the XMMT.ocx
interface. I will create a new router preset, WriteLog XMMT, which will
feature the Winkey port set to none. Should I want to revert back to
using the MMTTY plug-in I can just select my normal WriteLog preset and
the Winkey port will again be defined for COM4.
Thanks to both Don and Joe steering me in the right direction - AGAIN!
73,
Gary AL9A
----- Original Message ----- From: "Don AA5AU" <aa5au@bellsouth.net>
To: "Writelog Reflector" <writelog@contesting.com>
Sent: April 29, 2013 10:06 AM
Subject: Re: [WriteLog] RTTY PPT delay
While testing WriteLog on my laptop after installing hardware PTT via
the ACC connector on the back of my TS870, I noticed a delay in PTT. I
found that I had forgotten to disable PTT via radio control after
enabling hardware PTT.
It's been well documented that using both hardware and software PTT will
cause problems with PTT and delay is one of those problems. I don't know
if this could be the source of your delay, but it should be checked.
Once I disabled PTT via radio control, all worked normally. If you are
connected for hardware PTT, go to the Setup menu in the WriteLog window,
and select Ports. Make sure Comm PTT is set to NO on the port connected
for your radio.
In the BARTG Sprint 75, I used 2Tone as the main window for both radios
and used hardware generated FSK. Despite the blue characters going out
ahead of what was actually sent, this setup worked very well. I didn't
use my laptop because it doesn't have any legacy COM ports, only a USB
to serial adapter. I have 5 legacy COM ports on this PC. Two were used
for radio control and two were connected to transistor interfaces for
FSK and PTT. There was absolutely no delay in PTT.
73, Don AA5AU
----- Original Message ----- From: "Joe Subich, W4TV" <lists@subich.com>
To: <writelog@contesting.com>; "Gary AL9A" <al9a@mtaonline.net>
Sent: April 27, 2013 1:57 PM
Subject: Re: [WriteLog] Fw: RTTY PPT delay
I see no difference in PTT lead/tail times with either the SM6SRW
MMTTY plugin for Writelog or WriteLog's XMMT.ocx support.
What are your WinKey Lead/Lag times in Router? WriteLog's XMMT.ocx
support will assert PTT on Winkey (all mode PTT) while MMTTY is
asserting PTT on DTR of the FSK port.
You can check to see if it is the all mode PTT by temporarily setting
the WriteLog port to 'None' in Router's Ports tab.
73,
... Joe, W4TV
________________________________
From: Keith Goobie <keith@goobie.org>
To: Gary AL9A <al9a@mtaonline.net>; Writelog Reflector
<writelog@contesting.com>
Sent: Monday, April 29, 2013 8:32 AM
Subject: Re: [WriteLog] RTTY PPT delay
Hi All
I played as well in the SPDX RTTY contest (as part of VE3FJB) and I can
support the observations of Gary regarding PTT delays. It is quite
noticeable.
I am running writelog 11.11c, both 2Tone & MMTTY through XMMT.ocx, and a
Flex 3000 connected through DDutil. We just upgraded to 11.xx version of
Writelog prior to this contest and we were using this as a shakedown
contest.
Prior to the changes, we were running a version 10.xx Writelog with the
MMTTY plugin. No delays in PTT and it was snappy with the Flex / DDUtil
combo.
Based on this info, I did notice in the contest that some stations I
communicated with had longer turn around times - quite noticeable -
and it
does make one ponder were they using Writelog?
Please view my feedback as constructive. Writelog is a super great
program. We are not straying. We did make some 300 contacts in SPDX in a
mostly search and pounce operation.
Keith - VA3YC
One of the Ops at VE3FJB
On 4/27/13 1:23 PM, "Gary AL9A" <al9a@mtaonline.net> wrote:
I've been struggling to make a few QSOs in the SPDX RTTY contest and
band
conditions are simply awful. However, it is providing a bit of a test
bed for
the new XMMT.ocx interface. I've been noticing two things on
transmit. One,
in the main Rttyrite screen that prints in blue italics text, my macro
messages print erratically. Sometimes they print out character by
character,
as with the MMTTY plug-in, other times the entire macro dumps onto
the screen
as soon as the F key is pressed, and still other times I see part of
the macro
print to screen, then a slight pause and then the rest of the macro
dumps onto
the screen. Both of my clone windows, one with 2Tone the other with
MMTTY,
print the macros correctly character by character. I don't know what
the
problem is with the main Rttyrite screen, but it seems to be sending ok
despite the weird appearance.
On another note, I use the microHAM MKII keyer and router software
with my FSK
setup. It seems to me by ear that both the PTT lead and tail are
longer than
what I'm used to hearing with the MMTTY plug-in. The PTT tail seems
particularly long and I've tried adjusting that setting on the PTT
tab in
router to no avail. Is there something in XMMT.ocx that is causing
this?
Anyone else notice it or just me? I think I will reinstall the MMTTY
plug-in
and see if that makes a difference.
73,
Gary AL9A
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--
keith@goobie.org
Keith Goobie
Richmond Hill, ON, CANADA
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WriteLog on the web: http://www.writelog.com/
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WriteLog on the web: http://www.writelog.com/
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