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Reviews Categories | Receivers: General Coverage | Eladit FDM-77 Help

Reviews Summary for Eladit FDM-77
Eladit FDM-77 Reviews: 2 Average rating: 3.5/5 MSRP: $(missing—add MSRP)
Description: All Mode HF Receiver For HAM Radio or Broadcasting listener: LW,MW,HF Software Defined Radio Receiver
Product is in production.
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W2TCB Rating: 5/5 Jul 11, 2006 15:17 Send this review to a friend
Solid receiver with a quiet front end  Time owned: 0 to 3 months
My results were completely opposite from the first reviewer. I found the receiver to be very sensitive with great dynamic range and a very low noise floor, much lower than my Yaesu or Kenwood amateur radios. The advantages of the Elad were apparent on a 40-meter dipole, swl sloper or 6-meter ringo. It consistently pulled in signals that the other radios would not hear and with lower background noise. The filtering is excellent and I could really appreciate some of the 40-meter HF operators (around 7.20mhz) and their HiFi sound.

The software is upgradeable and version 4.0 is very stable. The unit runs USB, which is nice (so many high end radios still require serial ports which no new computer, in the last 2 years, have shipped with).

WinRadio is finally shipping USB based boxes (as opposed to the internal cards Ė again outdated) so in the future I may be able to compare but I donít have a great desire to do so. I guess I am satisfied.
M1JDK Rating: 2/5 Mar 16, 2006 14:39 Send this review to a friend
Want to hear your PC?  Time owned: 0 to 3 months
Despite the reasonable review in a UK radio mag, I found this receiver to be poor in several ways:

1. The software was buggy and would often crash, recovery from which had to be via a reboot.

2. This is a noisy receiver. Even with the antenna input terminated, there are lots of spurious signals over the whole HF spectrum. Not just carriers either, but modulated, S9+ signals that change depending on what the PC is currently doing.

3. The interface details (USB) are proprietary. Why Elad refuse to Open Source the command set and drivers is beyond me. I'm sure they'd sell more to the ham community if they did this - and we'd end up with a better product, with support for other operating systems.

In its defence, due to being a SDR, it did have a good range of IF bandwidths, and the analysis tools were reasonable.

In summary, although this is a Software Defined Radio, I think Elad have jumped on the SDR bandwagon and have produced an uninspiring radio with a (no wider than normal technology) 12KHz wide IF. They've then added some PC based DSP and called it a SDR, and that final step ruined the already poor noise performance.

Sorry Elad - you can keep it. I've heard the external WinRadio is a bit better...

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