JANUARY 9, 2019

Phased Verticals: Re-Resonating NE Vertical • F/B Locks In

Re-resonated Northeast vertical this afternoon, dropping it from 7.5 Mhz to 7.15 Mhz -- requiring 1.5 feet lengthening. Added a RF choke to base of Southwest vertical to bleed static build-up from it.

Homemade Static Bleed Choke

AWG #16 enamel copper wire wrapped around 3/4" PVC tube • bleeds static off vertical

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Upon return to the shack the following readings were taken at the feedline.

System Feedline Sweeps

Northeast, Southwest & Broadside (Omni)

7.04 Mhz

Northeast, Southwest and Broadside

7.15 Mhz

Northeast, Southwest and Broadside

7.3 Mhz

Northeast, Southwest and Broadside

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We are clearly pleased with these data, especially the exhibition of 38 Ohms in all three phase states on 7.150 Mhz. These readings confirm the NE vertical would require retuning after addition of radials to the three ground rods. We also note an increase in F/B ratio on receive and transmit in the several contacts made after completing field work in the salt marsh.