It depends on the location and the wires around. Your power lines might
get loaded with RF, and conduct part of the radiated RF back into the
shack. A power line filter and a good ground may take care of it. You
don't want to fight the RF current, just attenuate it enough, so an L
input
Adrian Brentnall wrote:
HI Andrew
Thanks for the reply
(Sorry for the top posting - Thunderbird doesn't seem willing to break
your text into smaller segments for in-line reposnses.)
I'm using a straight cable connection from rig to PC (with appropriate
attenuation !)
Actually -
To: digitalradio@yahoogroups.com ; digitalradio@yahoogroups.com
Sent: Wednesday, January 03, 2007 11:11 AM
Subject: Re: [digitalradio] New to PSK31 - advice please ??
Radio Shack some times ha isolation transformers
N0ZIZ
-Original Message-
From: adrianrav4
Sent
Hi All
Having just moved house ( country!), and set up the HF radio gear for
the first time in quite a few years - I'm having a dabble with PSK31.
I suspect that I'm having problems with poor isolation between the
radio and the PC - at the moment the 'quickly knocked-up' interface is
'direct' -
Adrian,
How are you connecting your PC to the radio? It just a straight connection
of cable from/to the souncard and rig? I did this year ago when PSk31 was
new, even with this potentially poor method I was able to get 20 watts out
without an nasty raspy signals. 20-30 watts is plenty of
Two things I did when I started out with BPSK31: I purchased a Donner interface
(Web address is http://donnerstore.com,) and I purchased a PSKMETER (Web
address http://www.ssiserver.com/info/pskmeter). Also when tuning up and
adjusting your sound card use a dummy load and you should not have to
Adrian,
I googled optoisolators Ireland and Radionics Ireland has them in stock.
73, Chuck, AA5J
