All right, back to history. In that period before time began and the only
Flex radio was the 1000 and we still had (but didn't know it) another three
or four months before the 5000A would begin ordinary shipping there was much
discussion on the reflector on various topics: all speculation and mostly
forgotten today. For example, at one point the equalizers had not been
mentioned as a part of PowerSDR but thought to be "recommended" and thus
there is now such a separate box in my shack that has never been connected.
And then there was the discussion on the supply voltage accuracy needed by
this marvelous rig and since one opinion was given that plus one tenth and
minus two tenths from 13.8 would be a good idea you will now find a one
farad capacitor in my system. Now, when it came to this strange new fire
wire thing that no one knew anything about the discussion included
admonishment to avoid cheap cables. And I think I was among the first to
find this Granite Digital "doubly shielded" cable on line and since it also
cost an arm and a leg I thought it must be good and purchased it---several
months before the radio arrived at the door and I also told John Basilotto
that I had found this marvelous product and the next thing I knew it was
being recommended. I have used it since day one and have not had any RFI
but I will say that there is very little distance between the radio and
computer (two feet). Of course, by the time the 3000 was in the pipeline
there had been enough complaints and Flex had started to ship their cable
with the radio and that is what I use with the 3000. Again, no RFI
problems but the computer-radio distance is short and I do believe in
grounding as best I can. And I do continue to feel guilty that I have these
"exciting" radios that others don't have for reasons of price or ignorance.
73
Lee K9WRU
----- Original Message -----
From: "Steven Hess" <flameb...@gmail.com>
To: <FlexRadio@flex-radio.biz>
Sent: Tuesday, September 13, 2011 6:58 AM
Subject: Re: [Flexradio] Flex 3K and 5K software shut down QRO.
I had to point out a contrary instance. The kicker is I am using the
Granite
firewire cable now my SDR computer is not attached to the station ground
system without problems. I don't recommend this practice however. The
stock
Firewire cable Flex ships with the radio is pretty darned good with only
ferrite at one end.
On Tue, Sep 13, 2011 at 5:42 AM, Ray, K9DUR <k9...@rnacs.com> wrote:
Steven,
I probably should have qualified my statement with "In my experience...".
As someone else pointed out, EVERY installation is different & reacts
differently to the various "cures" for RF feedback.
That being said, I will say that yours is the ONLY occurrence that I have
heard of where the Granite Digital cable actually made the situation
worse
instead of helping.
73, Ray, K9DUR
http://k9dur.info
--
____________
Steven L Hess ARS KC6KGE DM05gd22
Skype user flamebait Cell 661 487 0357 (Facetime)
Google Voice 661 769 6201
openSUSE Linux 11.3 and 11.4
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