Hi Dale. Great idea. I was thinking that I no longer have a portable freq
counter - only a lab model - then remembered that my MFJ-259B has a freq
counter mode. I just set up the Millen next to the MFJ with a 1' whip and
was able to read the Millen frequency all the way up to 300 MHz just by
getting within a couple of inches of the Millen coil. Your idea would give
me a bit more flexibility and there's already a small hole in the side of
the Millen cabinet (factory hole) that could be used for the cable exit.

There's really no reason why the Millen analog scale couldn't be made to
read out at 1% or better accuracy. I'm going to remove the dial scale and
scan it and then relocate the index marks to be accurate. The corrected
scale will then be transferred to a new dial sheet and installed in place of
the old one. Sounds time consuming, but bound to be faster than screwing
around with those immovable trimmer caps and more accurate in the end.

Thanks for the idea.

73, Floyd - K8AC


"Dale H. Cook" wrote in message
...
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