Re: [IRCA] Elad FDM-S1 and FDM-S2

[Nick Hall-Patch <nhp@xxxxxxxx>]

They certainly look ideal for travel 
Mark.    Principal question is how much the lack 
of preselection filters affects them (they call 
it a "sampler" at first, changing to "receiver" 
for under 30Mhz for which there is a low pass 
filter.)  The similarly priced SDR-IQ does have 
switched front end filters, but it  delivers 
192kHz bandwidth compared to up to 
6144kHz  (really, that's what they say;  the Elad 
started as a 192kHz receiver also)

A couple of us here on the west coast are talking 
about  making an investment to find out...there 
is a reasonably good review or two floating around on the web.

The S2 is very intriguing, though not yet widely 
available; 2 different receivers possible (though 
only at about 300kHz bandwidth each, I 
understand, though you can still get 6MHz 
bandwidth out of one; there's also the 
complication of a separate VHF receiver)...per 
Simon Brown on the sdr-radio list:

"Preliminary: FDM-S2 has a 122.88MHz sampling 
rate with 16bit ADC High performance analog to 
digital converter this means: 9kHz to 52MHz 
direct sampling SDR receiver; -132dBm MDS 
(Bandwidth 500Hz) @ 14 MHz ? USB Port Powered ? 2 
antennas input: one for HF one for VHF (VHF input 
has 2 filters: one for use Broadcasting FM Band 
(74-108MHz), one for 136-160 MHz, and more. - 
possibility two independent receivers: FDM-S2 has 
two independent NCO (Numerical Local Oscillator) 
and the new FDM-SW2 software, using Multichannel Extio Dll."

Stay tuned.....to a 6MHz wide swath.

best wishes,

Nick




At 23:13 02-03-14, you wrote:
> Elad FDM-S1 and FDM-S2
>
> http://shop.elad-usa.com/sdr-radio/fdm-s1/
> http://shop.elad-usa.com/sdr-radio/fdm-s2/
>
> I thought I saw a mention of these recently.
>
> Are these viable competitors to Perseus and 
> Excalibur in raw DXing capability terms and in 
> spectrum capture / replay ability?
>
> Of use for "field" operation:
> "FDM-S1 is powered by USB connection due to less 
> than 2.2 W power consumption."
>
> Mark Connelly, WA1ION
> South Yarmouth, MA
>
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