Tom, my guess is that without isolation it will usually work but
at some point in the future Murphy is gonna jump out and grab
you! I think I recall you have your antennas quite a ways from
the shack (not sure). If someone is sitting right under his/her
antenna and running high power, I bet there will be problems.
73
Rick
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]On Behalf Of Tommy
Sent: Wednesday, March 17, 2004 3:26 AM
To: tentec@contesting.com
Subject: Re: [TenTec] Orion Aux I/O socket
I can't be sure of this because I have not looked at the
schematic's of the
I/O connector yet. However I have spent some time, running
barefoot, on 20m
PSK. Of course PSK only requires the audio out of the Orion and
the audio in
from the PC and uses VOX. No problems encountered to date.With
FSK I'm just
using a transistor switch to key PTT and FSK on the Orion and the
MTTY
program. Still barefoot, I've not encountered any problems with
this setup.
When I get back from fishing this week, I'm gonna crank the Titan
3 up to
max power out and see what happens. Just as a precaution, I did
put ferrite
beads and RF bypass caps on the transistor switches.
I also use YPlog for sending CW via the sound card. Have a little
bridge
detector circuit for converting sound to switch another
transistor switch. I
normally run this both barefoot and with the Titan 3 running the
full 1.5 KW
out, again with no problems at speeds from 18 wpm to 80 wpm.
This is speculation, but so far, experience has shown no need for
isolation
of any kind.
Tom - W4BQF
----- Original Message -----
From: "Barry N1EU" <n1eu@yahoo.com>
To: <tentec@contesting.com>
Sent: Tuesday, March 16, 2004 8:09 PM
Subject: [TenTec] Orion Aux I/O socket
> W4BQF suggested that "you do not need any interface at
> all" for the Orion's aux audio connections.
>
> Does the Orion internally isolate the ground
> connections on the external aux audio lines?
> Opto-isolators, transformers, ???
>
> Thanks & 73,
> Barry N1EU
>
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