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Millen 90651 grid dipper calibration
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January 17th 05, 07:06 PM
Dale H. Cook
Posts: n/a
On 17 Jan 2005 09:47:43 -0800,
wrote:
The Millen grid dipper was never a calibrated ,or accurate device, to
get an accurate reading ,tune a receiver to the desired frequency and
set the dipper to the receiver ,You will be anble to get "in the ball
park"
If you need accuracy an alternative is to install a small cap (~10 pf
or less) connected to the plate of the tube and connected through,
say, a piece of RG-174 to a BNC jack. That will let you connect a freq
counter for accurate determination of the 90651 frequency.
Dale H. Cook, Chief Engineer, WWWR Roanoke VA, WCQV Moneta VA, WKBA
WZZI Vinton VA, WKPA WLNI WZZU Lynchburg VA, WMNA/WMNA-FM Gretna VA,
WOWZ Appomattox VA
http://members.cox.net/dalehcook/starcity.shtml
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