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Reviews Categories | Filters, RF: bandpass, lowpass, highpass, RFI/EMI, etc.. | Nuova Elettronica LX.909 KIT Scanner Intermod Filter (88-108Mhz Help


Reviews Summary for Nuova Elettronica LX.909 KIT Scanner Intermod Filter (88-108Mhz
Nuova Elettronica LX.909 KIT Scanner Intermod Filter (88-108Mhz Reviews: 1 Average rating: 5.0/5 MSRP: $8 euro plus 5 for the review
Description: This filter is designed to attenuate by at least 20db
signals between 88-108Mhz. Intermodulations generated by the
receiver or the saturation of a preamplifier in the presence
of nearby FM powerhouses may be prevented. Instructions to
build this kit are in the review Nuova Elettronica n. 129
Product is in production.
More info: http://www.nuovaelettronica.it/
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You can write your own review of the Nuova Elettronica LX.909 KIT Scanner Intermod Filter (88-108Mhz.

KD7RDZI2 Rating: 5/5 Sep 16, 2009 06:36 Send this review to a friend
excellent filter  Time owned: 0 to 3 months
This kit is meant to be a notch filter that eliminates the FM band. This filter attenuates at least 20db in the range 88-107Mhz and 25db between 90-100Mhz. Compared to other filters this is much less performing. Other products can attenuate 40db to even 70db. 20db however may be just enough in many cases to prevent the saturation of the front-end or a preamplifier. This is because in the most performing units filter traps are usually used. This filter uses a Low-Pass filter (0-80Mhz) and a High-Pass filter (112Mhz-up to UHF) in parallel. The performance of this simple filter is outstanding, albeit filter traps are much more performing.
This design allows for much more flexibility. It may be used for instance, adding a connector, as a receiving diplexer to connect an HF and 6 meters antenna to the low pass filter and a V-U antenna to the high-pass filter, or instead one very wideband antenna to a HF receiver and a V-U receiver.

Mechanically this kit is excellent. The kit comes with 5 ceramic caps, 5 small toroids, the wire to wound, two BNC connectors and a nice wide enough box which is easy to solder.
 


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