Re: Midwest USA 80meter QSO
- I forgot to mention my schedule. I am on 17 meters Q15x25 mode from
3:00pm to 8:00pm central time. Sundays I'm a little bit late getting
My station beacons every fifteen minutes, if not connected.
I've heard of several groups interested in using Q15x25 mode on 75
meters. - Seems like it was New York, Chicago and somewhere else...
My personal favorite is to bump up the TXDelay to a 800 ms or even one
second if necessary, in order to make it work over the local VHF or UHF
Sure, you have a long TXD, but Q15x25 can be set up for high MAXFRAME
and PACLEN values to reduce overhead and at 2500 baud, it's twice as
fast as most packet to begin with.
I think people are crazy for not utilizing Q15x25 this way for mixed-
mode ecomms over VHF/UHF voice repeaters ( and simplex ) - but that's
- In the "radical uses for Q15x25" category, this puts my VHF/UHF mixed-
mode Q15x25 idea to shame...
Get a copy of John Hansen's old "RadioMirror" multicast software (
that works with a KISS TNC ) and hook it up to MixW in virtual KISS
TNC mode, in Q15x25.
- A Q15x25 multicast system!
Hanson's software sent a series of 1kb PACLEN unproto packets with
next to no time in-between them. - It effectively ran continuously.
Your transmitter would have to be HEAVY DUTY to operate this mode (
Q15x25 multicast ) - but imagine the splash you would make on HF with
RadioMirror could transfer 20MB a day at 1200 baud, according to the
- Question: Are all digital modes required to have a
busy frequency check activated at all times?
I recall back in early packet radio days that was
the case and it avoided packet stations stepping on
one another or on other modes in operation.
Given the increasing volume of complaints from Hams
re. Pactor III operations firing up on top of ongoing
QSO's (and being unavailable for decoding so a non-
Pactor III user cannot even discern who it is that just
QRM'd them) I wondered what y'all could tell me about
other digital modes.
I have just acquired a 706 so I can try it and my Jupiter
on HF digital modes and still have the other one free for
Thanks! & 73, doc kd4e
- In the U.S., yes
Which in large part was prompted by automated WinLink stations raping
the bands and SCS's modems not being able to generate a valid DCD.
Just because the gun doesn't have a trigger guard, doesn't mean your
not libel if you load it and send it to preschool with your child.
I understand some steps are being taken with Scamp, which is a follow
on soundcard mode targeted at WinLink.
Not sure on Q15X25 on how DCD responds to non-native data energy.
--- In Q15X25@yahoogroups.com, kd4e <kd4e@v...> wrote:
> Question: Are all digital modes required to have a
> busy frequency check activated at all times?
> I recall back in early packet radio days that was
> the case and it avoided packet stations stepping on
> one another or on other modes in operation.
> Given the increasing volume of complaints from Hams
> re. Pactor III operations firing up on top of ongoing
> QSO's (and being unavailable for decoding so a non-
> Pactor III user cannot even discern who it is that just
> QRM'd them) I wondered what y'all could tell me about
> other digital modes.
> I have just acquired a 706 so I can try it and my Jupiter
> on HF digital modes and still have the other one free for
> voice modes.
> Thanks! & 73, doc kd4e
> wb8wka wrote:Thanks for this!
> In the U.S., yes
I have forwarded this to interested Hams with a
recommendation that they systematically document
the offenses and assured them that Riley will
see to it that his warning is heeded or else serious
consequences come to those who ignore him.
Help Riley help Ham radio ... again.
- --- In Q15X25@yahoogroups.com, kd4e <kd4e@v...> wrote:
>I generally watch for lid-like operating behavior with programs like
> > wb8wka wrote:
> > In the U.S., yes
> > http://www.arrl.org/news/stories/2004/03/03/100/
> Thanks for this!
> I have forwarded this to interested Hams with a
> recommendation that they systematically document
> the offenses and assured them that Riley will
> see to it that his warning is heeded or else serious
> consequences come to those who ignore him.
> Help Riley help Ham radio ... again.
MixW or DigiPan that have a waterfall display.
The waterfall's time-line shows the original QSO - and the offending
station coming in on top of that QSO graphically.
By using ( Alt - Print_Screen ) which puts the current window into
the clipboard ( Windows ) I can catch bad guys at it, and paste the
image into a graphic program, where I crop out the unecessary part,
leaving the waterfall display and the program's status line at the
bottom, which displays the time, mode, etc..
By doing this, I documented dozens of cases of interference
perpetrated by PACTOR bots on 20 and 30 meters. - In fact, I stopped
recording the incidents after a while as there was no sport to it...
I could tune in on those bands at any time there was activity and
find a PACTOR bot crashing somebody's QSO after a very short wait.
Way too easy!
Here is a typical incident: http://www.uspacket.org/pqrm.htm
I would give a ratio of PACTOR related interference in comparasin to
interference from other modes/protocols - but during the course of
all this monitoring and recording, I did not see anybody's QSO being
crashed by Packet, PSK31, MFSK or MT-63. Lots of PACTOR 'activity' to
record, but not much of anything else. Obviously interference from
these other modes does exist - but it is just as obvious that
interference from PACTOR stations happens much, much more often than
with the rest of these modes put together.