ElAD FDM S1

[PascalD]

Hello,

In a local Cash Express boutique there is a elad fdm s1 for sale 80 euros and is this a good sdr for buying? I have a airspy mini and ask if the fdm s1 is a better SDR for fm dx? I search for elad fdm s2 but the price is expensive for a novice fm dxer who dx's only occasionaly.

Good DX

Pascal

[Tim Bucknall]

read this
http://ecom.eladit.com/FDM-S1/en
http://sdr.eladit.com/FDM-S1%20Sampler/ ... 201.04.pdf

"FDM-S1 is a receiver with 61.44MHz ADC, can be used from 20KHz to 30MHz. In Sampler Mode frequency coverage rises up to 200MHz.
As say before, the device can be used as sampler for downsampling use taking advantage of the 200MHz front-end.
With the FDM-SW2 software it is possible to demodulate CW, LSB, USB, DSB, AM, SAM, DRM, FM e WFM signals"

so Band 2 is an afterthought and not properly supported

[satnipper]

The FDM-S2 uses undersampling for Band II.

[pe1etr]

read this
http://ecom.eladit.com/FDM-S1/en
http://sdr.eladit.com/FDM-S1%20Sampler/ ... 201.04.pdf

"FDM-S1 is a receiver with 61.44MHz ADC, can be used from 20KHz to 30MHz. In Sampler Mode frequency coverage rises up to 200MHz.
As say before, the device can be used as sampler for downsampling use taking advantage of the 200MHz front-end.
With the FDM-SW2 software it is possible to demodulate CW, LSB, USB, DSB, AM, SAM, DRM, FM e WFM signals"

so Band 2 is an afterthought and not properly supported

It uses undersampling for FM Band 2, just like the Elad FDM-S2 you have. The S2 is better in that the sampling rate is higher, so just one range of undersampling is used.

Peter