At 2/4/2009 21:19, you wrote: >The Vertex has a .20uV measured and the rest of the specs are just as >good.
You do not need a preamp. The RX might still need an extra pass cavity, but I'd go ahead & try it with just the duplexer if there isn't much RF in your neighborhood. > I am blessed with my location and yes, noise can be high. I'll >try without the preamp first and see where I'm at, and the use of the >proper antenna will help. I've spent so much alreqady that a few more >buckis for 7/8" won't make a difference and will err on the side of >caution with intermod. Again, 20 ft. of 7/8" for 2 meters is an unnecessary expense. 20 ft. of RG-214 has only 0.5 dB of loss @ 146 MHz - quite acceptable for a first-rate system, and it won't cost you that much even if you have to buy it @ retail $$. Bob NO6B
