this is to reduce transmission time on the HF link. Since you are held
to a time limit of 30 minutes per 24 hour period, the use of the Pactor
1 mode may not be enough time for what you want to send. In fact, some
of the PMBO's no longer even permit Pactor 1 connections to their system
since the system can not handle the levels of traffic from casual users
if everyone used P1. There aren't that many connection in the privately
controlled system.
While some individuals or groups involved in emergency communications
may include Winlink 2000 in their plans, the system lends itself mostly
for casual use such as RVing, sailing, etc. 1.
When emergency situations develope, the Winlink 2000 system will remove
the time restraints for some of the emergency stations, so P1 is a
viable mode. But the fact is that almost no one is using Pactor anymore
for other uses and most of us will not buy expensive equipment for a use
that may never be needed and which may not even work under emergency
conditions. A much better route to take is satellite links and that
seems to be the direction a number are moving toward. This allows you to
link with digital voice connects through VoIP connections to repeaters,
etc.
For those who have used Amtor, Pactor, and now the digital sound card
modes, when the going gets difficult, Olivia, MFSK16, can actually
outperform the first two. What we still need are some really robust ARQ
modes using pipelined programming such as SCAMP so that the overhead of
the ARQ has almost no effect on the throughput and yet allows us to use
modes that really work through the noise and ionospheric conditions and
insure that we have perfect copy on the receiving end.
If Linux became more popular, it might be possible to see more PSKmail
connections that use ARQ PSK63, but I don't see that happening any time
soon. Even though very slow, it is dramatically narrower than the Pactor
modes and would cause much less interference to other hams.
73,
Rick, KV9U
[EMAIL PROTECTED] wrote:
>Hello John....
>
>I don't normally quote the whole message but it lost intelligence
>when I tried quoting just you.
>
>It was made clear to me and others in wl2kemcomm that the PTC III
>unit is the preferred choice. Much discussion focuses on that
>preference and, has been said more than once, if one is serious
>about that emcomm work, a PTC will be purchased. OR, one will endeavor to
>convince an agency to dig down into the coffers and
>include the PTC purchase in its budget preparations. Primary reason
>is the disappointment in seeming limited capability that will be
>felt by agencies if it's not used.....among other reasons. One
>in particular is the deliberate growth of incompatibility of
>PACTOR I for the wl2k system. So, the comment that wl2k would
>be an expensive proposition seems pretty on target to me.
>
>I use PACTOR I AEA PK232 with upgrades on the Ham bands still
>today for fun, but again, it was made clear to me that use of
>the PK232 with wl2k is a pipe dream. So, I dropped the notion
>of some sort of participation and stopped receiving the forum.
>
>I don't know what YOUR activity is with wl2k and the PK232 is
>but I and others are strongly discouraged from trying it. Are
>you using the PK unit on 7075 or is it the PTC unit? You are
>bloody fortunate to be able to drop the bucks for one of the
>SCS offerings.
>
>Howard W6IDS
>Richmond, IN
>
>John <[EMAIL PROTECTED]> wrote:
>
>At 10:41 AM 5/26/2006, you wrote:
>
> >If I am correct, WL2K HF system is dependent on PACTOR. PACTOR is a
> >proprietary system that is extremely expensive , not something
> >available easily to all hams. Reliable hardware for PACTOR II and III
> >is more expensive than a new HF rig these days.
>
>
>Not really, If you are looking for PACTOR [one] under 100 bucks
>will get you up and running. There is 2 AEA PK-232MBX's on EBAY
>at this time. I just got my 4th PK-232 last fall off EBAY.
>
>If you are looking to play PACTOR II or III then you will have to put
>out the big bucks. One of the SCS PTC-IIex will set you back just
>over 900 bucks. I just got one this spring and having a ball with it.
>
>I do have a rig on 7075 most all the time.
>
>
>
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