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

[coffee_canuck <coffeecanuck@xxxxxxxxx>]

Not only that, the ALA can reject a whack of the RFI and QRN...

Colin Newell - CoffeeCrew.com - VA7WWV - Victoria - BC

> On Jan 23, 2016, at 11:15 PM, Walter Salmaniw <canswl@xxxxxxxxx> wrote:
> 
> That was my mistake.  A 30 ' random wire fed into the SDR IQ yielded only a
> handful of 9 kHz split stations, and lots of noise.  Next time!
> 73,....Walt
> 
> On Sun, Jan 24, 2016 at 7:01 AM, coffee_canuck <coffeecanuck@xxxxxxxxx>
> wrote:
> 
>> Whenever I've taken an ALA100 to Hawaii I've been overwhelmed with its
>> performance - 2 to 4 stations on every 9 kHz split -- and just using a 9 -
>> 12 foot loop of wire...
>> 
>> Colin Newell - CoffeeCrew.com - VA7WWV - Victoria - BC
>> 
>>> On Jan 23, 2016, at 10:10 PM, Walter Salmaniw <canswl@xxxxxxxxx> wrote:
>>> 
>>> 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
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