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The coax only has a loss of 1 db for the length I am running it. I doubt
that at 2 meters I would see any benift of putting the preamp at the antenna. It is as easy to get a 1 db or less noise figure at 2 meters as it is to make any preamp and the 221 does need some help on the receiving side. From the articals I have read the beam width of most any single antennas at 2 meters is wide enough the ground noise will override that ammount of loss. Agreed. Your 1 dB preamp just became a 2 dB preamp and the visible ground temperature likely overrode either figure and by a good margin. I suspect the original poster with his S9 sun noise and "seeing" the Galactic plane was being a bit optimistic. W4ZCB |
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