It trys to tune but blue light is flashing to suggest motor is ok but refuses to tune to selected frequency,any suggestions?
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Hi.... In the first place, the control box should be fueled from a secluded stockpile - either the one sent with it or inner batteries. On the off chance that you power it from a grounded supply (common for what the normal ham may have with a 12 V dissemination transport from a huge force supply) it will execute the regulator. At the circle, the radio wire connector goes to (1) the little determined circle through a capacitor and coordinating with circuit - there is no DC way there; and (2) to the dc engine driving the capacitor through a channel circuit. Low obstruction proposes an issue in the dc engine circuit or channel.
Hi.. an EZNEC model suggests that the gain is maximum at antenna heights between 1.5 and 2.5 meters, which is probably the reason they say to mount it between those heights. Looking at the maximum gain only, the gain difference between 2 meters and 10 meters height is about -2.7 dB on 40 meters. However at the higher height the difference at low elevation angles isn't that high. At 20 degrees elevation the gain is only down about 1.2 dB from the 2 meter height. The antenna produces less high angle signal at the higher height. I didn't look at the other bands. Mounted on a roof it will be difficult to determine the height the antenna sees because what is inside the roof is probably unknown.