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[ Previously GW4ALG (QRT in February 2007) ]

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Longwire Antenna

In early December 2022, I replaced my 110 m perimeter horizontal loop with two antennas.  This 54 m longwire (shown in yellow) was one of them.  An inverted V doublet (shown in red and white) was the other.


This unbalanced antenna is 54 m in length, and about 7 m high. It is matched to 50 ohms using a home made Pi network matching unit.

Initial results (when tuned against a poor RF ground) indicate that the longwire is one to two S points down relative to the doublet on 80m. On 160, there appears to be no significant difference between the performance of the longwire and the doublet. On both 160 and 80, the received local noise (SMPS noise, etc.) is significantly stronger on the longwire relative to the doublet. On 40m, the longwire is often significantly better than the doublet when working UK and other European stations.