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On Jan 1, 9:16 am, wrote:
I must be doing something right because we had another power outage last night, or early this morning from 1:00AM until 3:00AM. I had restrung a 50' random wire antenna from the WR LWA-0130 Long Wire Antenna Adapter mounted under the eves to a fiber glass pole tied to a fence post. I compared three antennas, a Lankford "Simplified Complimentary Antenna', the same antenna with a built in Lankford "Norton RF amp" and the LWZ-0130. After a few tests I dropped the active with the built in Norton RF amp. Simply put, there is still too much background noise to make the amp useful. I A/B tested the other 2 from CB, 27.035 had a nice distance conversation, down to 100KHz Loran C. As expected the Lankford "Simplified Complimentary Antenna' was the winner. At every frequency the signals were cleaner on the Lankford antenna, though in many cases the difference was just noticeable. At 3:03AM when the AC came back on, the LWA-0130 and 50' random wire antenna became nearly useless. The QRM jumped up to at least S3 up to 15MHz on the LWA-0130. The noise increased on the Lankford active antenna rose as well, but never reached S1. As I thought, if one lives in a remote RFquite area the typical random wire antenna is clearly a worthwhile antenna. In built up and noisy areas it's utility decrease. I admit that I need to mount the LWA-0130 at least 50' from our home, but that isn't practical right now. Terry Loop antennas are better at rejecting man made noise. I think I've plugged Wellbrook too much already on the group, but their products are the way to go for urban environments. But even in the boonies, my ala100 and homemade loop worked better than about 80ft of wire and the palomar magnetic balun. The advantage to the loop is you can rotate it to null the noise source if the frequency is relatively low. Certainly for MW and lower. |
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