ELAD FDM-S2 Manuel d'utilisateur télécharger pdf

8 May 2014 radiouser

■ Mike Richards reviews the ELAD FDM-S2 direct sampling SDR receiver

■ All diagrams and images supplied by the author

review

lthough the original Elad

FDM-S1 arrived quietly on the

software deﬁ ned radio (SDR)

scene, it was a surprisingly good and

very compact SDR receiver. While

the new FDM-S2 has many similarities

because it is a direct sampling design,

the new model has some signiﬁ cant

technical advances, hence the higher

price tag. The FDM-S2 is USB powered

and provides continuous coverage

from 9kHz through to 52MHz and an

undersampling range that extends up

to 160MHz. I’ll explain a bit more about

undersampling later. The receiver comes

with its own bespoke software package

that supports two independent in-phase

and quadrature (IQ) channels, with

each IQ channel supporting up to four

receivers.

Connecting-Up

Although larger than the FDM-S1, the

FDM-S2 is still a very compact receiver

measuring just 40 x 110 x 90mm. As you

can see from the photos, the receiver

is housed in a rather swish anodised,

brushed aluminium case. The front

panel is very simple, with just two light

emitting diodes (LED) indicating power

and the USB connection. The rear panel

housed the external connections. There

were two SMA sockets for antennas,

one HF and the other for VHF. Antenna

switching was managed in software,

with the HF socket used for the 9kHz to

52MHz range and the VHF socket used

for the undersampled VHF coverage.

Both antenna connectors were excellent

quality and SMA to BNC adapters were

supplied in the box, which was handy if,

like me, you use BNCs for general shack

interconnections. The USB connection

employed a standard USB A connector

and was used to supply power and to

transfer the 16-bit IQ samples to the

computer software for processing and

demodulation. This makes for a very

neat and compact installation that’s good

for use in the shack or with a laptop

Mike Richards takes a look at

the next generation of direct

sampling receiver from Elad,

the FDM-S2.

Elad FDM-S2

The Elad FDM-S2 with supplied accessories.

The FDM-S2’s rear panel.

Elad FDM-S2 Review.indd 8Elad FDM-S2 Review.indd 8 02/04/2014 12:2502/04/2014 12:25

1 2 3 4 5

Résumé du contenu

Page 1 - Elad FDM-S2

8 May 2014 radiouser Mike Richards reviews the ELAD FDM-S2 direct sampling SDR receiver All diagrams and images supplied by the authorrevie

Page 2 - Table 1: IQ Sampling Rates

radiouser May 2014 9when travelling. In addition, on the real panel there was a 9-pin D connector for the external input/output (I/O) line. This is

Page 3 - May 2014 radiouser

the 74 to 108MHz and 135 to 160MHz undersampling bands.Table 2 contains an extract of the specification for the FDM-S2.SamplingThe FDM-S2 is one of th

Page 4 - Audio Versatility

cursor position. This kept the display clear but still gave access to the full database information. Because the software used a simple CSV file, it w

Page 5

12 May 2014 radiouser without having to convert to analogue and back. The FDM-SW2 software also allows selection of four different output formats,

Plus de documents pour Récepteur ELAD FDM-S2

Voir le document ELAD FDM-S2 Manuel d'utilisateur

ELAD FDM-S2 Manuel d'utilisateur (32 pages)

Commentaires sur ces manuels

Pas de commentaire

ELAD FDM-S2 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Récepteur ELAD FDM-S2. elad fdm-s2 review radiouser may 2014 Manuel d'utilisatio

Résumé du contenu

Plus de documents pour Récepteur ELAD FDM-S2

Commentaires sur ces manuels