[NLRS] Looking For Comments About DCI Filters

[kr7o at vhfdx.com]

Hi Duane,

For 6m and 2m ICE makes some nice filters that are inexpensive.  I'm not 
sure about the 2m version, but the 6m version is available in power ratings 
up to 6kw.  The 6m version also come in two flavors 50-54 and 
50.50.5MHz.  I use the narrow band 6m model and can barely copy TV CH2 
video carriers at 55 MHz when the band is wide open.  Insertion loss for 
the narrow model is .5db, which has not caused me any problems on 6m EME 
with no external preamp.  Right now I just run the low power model and I 
still have some grunge on 2m (but the antenna is only 3' away and I am 
running 1500w).  Eventually I will put the high power model on the output 
of the 8877.

The small insertion loss should not be a problem for all but the most 
serious terrestrial station and no problem If you are running an external 
preamp.  I think the IL of the wide-band versions are .2db from a previous 
discussion with the manufacturer, but it isn't published on the website.

http://www.arraysolutions.com/Products/ice/filtersrf.html#2
http://www.arraysolutions.com/images/ICEBPFdatasheet.pdf


At 08:29 PM 7/4/2005 -0700, Duane - N9DG wrote:


>I'm looking for a way to minimize or eliminate the amount of
>RX interference between the 50-432Mhz bands when transmitting
>on one while listening on the other 3. So I'm interested in
>comments from those who have tried the DCI family of filters
>and what their experiences have been? I'm especially
>curious/concerned about the insertion loss for the RX side of
>the equation.
>
>Also any suggestions for something similar but for higher TX
>power? Perhaps 1KW to legal limit range. I ideally want to
>keep the option of going to the high power category for
>contesting open as well.
>
>Duane
>N9DG
>
>
>
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73, Robert KR7O/YB2ARO, DM07ba/OI52ee  (ex.  N7STU)
kr7o at vhfdx.com

www.vhfdx.com (Norcal WSWSS activities & KR7O/YB2ARO homepages)