Re: [IRCA] ââ"Science Fiction PL-380"-- Pest Control Version

[Walter Salmaniw <canswl@xxxxxxxxx>]

Sigh!  A good idea, but as you say, a small diameter Wellbrook loop fits
the bill nicely, except for the lack of backside suppression, which is less
of an issue at Rockwork.  After my poor experience of a random wire to a
SDR-IQ in Hawaii, I'm going to seriously look at bring a Wellbrook along on
my next exotic trip.  I'm sure the results will be far better.  73,...Walt

On Sun, Jan 24, 2016 at 4:16 AM, Guy Atkins <dx@xxxxxxxxxxxxx> wrote:

> Hi Walt,
>
> To my knowledge no one has perfected a broad band FSL that works with
> anything close to the performance of a single channel, carefully peaked
> version. This has often been a topic of discussion between Gary and myself.
> The broad band FSL I made a few years ago in the end turned out to be FAR
> below the sensitivity of a tuned FSL. This FSL used a Wellbrook FLG100
> module as a matching device and amplifier. In use at home I thought it was
> working well, but on a DXpedition it was sorely lacking vs. a Wellbrook
> 1-meter active broad band loop.
>
> Different matching ratio transformers have been tried without much success.
> A tuned FSL is like any other inductively coupled loop in that it's a
> resonant circuit, and gain goes up sharply at the expense of bandwidth...
> not of much use for broad spectrum SDR captures!
>
> 73,
>
> Guy Atkins
> Puyallup, WA
>
>
>
> > ---------- Forwarded message ----------
> > From: Walter Salmaniw <canswl@xxxxxxxxx>
> > To: Mailing list for the International Radio Club of America <
> > irca@xxxxxxxxxxxxxxxx>
> > Cc:
> > Date: Sun, 24 Jan 2016 01:52:37 +0000
> > Subject: Re: [IRCA]
> > ââ
> > â"Science Fiction PL-380"-- Pest Control Version
> > Fellas, I'm interested again with the removal of the variable tuning
> > capacitor and use for broad spectrum Perseus SDR captures.  As you
> recall,
> > a number of these early large units were kindly built by Gary.  One was
> > sent my way (and I may have the same in Masset).  Results have been
> > variable.  Would anything different be done with these units compared to
> > what we know today?   73,...Walt
> >
> >
> _______________________________________________
> IRCA mailing list
> IRCA@xxxxxxxxxxxxxxxx
> http://montreal.kotalampi.com/mailman/listinfo/irca
>
> Opinions expressed in messages on this mailing list are those of the
> original contributors and do not necessarily reflect the opinion of the
> IRCA, its editors, publishing staff, or officers
>
> For more information: http://www.ircaonline.org
>
> To Post a message: irca@xxxxxxxxxxxxxxxx
>
>
_______________________________________________
IRCA mailing list
IRCA@xxxxxxxxxxxxxxxx
http://montreal.kotalampi.com/mailman/listinfo/irca

Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers

For more information: http://www.ircaonline.org

To Post a message: irca@xxxxxxxxxxxxxxxx