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Topic Created Posts Views Last Activity
Tuning AV-680 Aug 29th 2016, 23:37 2 478 on 24/9/16
Drake 2-B Passband Adjustment Nov 23rd 2013, 02:43 2 1,478 on 27/11/13

Latest Posts

Topic Author Posted On
Tuning AV-680 AB1ZK on 24/9/16
I worked out the information myself, as I received no replies.

Length of spokes on Capacitor Hat :

80 Meter 48 inches
40 Meter 38 inches
30 Meter 23.5 inches
20 Meter 10 inches

Tuning AV-680 AB1ZK on 29/8/16

I have been having trouble tuning the 20 Meter and other bands on the AV-680 Hygain antenna.

My "guess" is that the tuning lengths in the AV-640 manual for the capacitance hat are the same for the AV-680.

Has anyone tried the tuning step ? The initial length for 20 Meters is 14.5 inches as shown on the diagram and the length in the AV-640 is about 10 inches.

Drake 2-B Passband Adjustment AB1ZK on 27/11/13
No Drake Owners around ?

Drake 2-B Passband Adjustment AB1ZK on 23/11/13

I have a Drake 2-B and a copy of the owners manual. However, I do not quite understand the operation and adjustment of the passband tuning.

How do I set the passband knob pointer ? I can rotate the knob 360 degree's and I do feel a slight "detent" at one position.


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