"COLIN LAMB" wrote in message
k.net...
Hello Floyd:

Years ago, I decided to convert one of my Millen tube jobs to a solid
state
one, using the article in QST. It was an exercise more to see if I could
do
it than any other reason.

When I got done, the 2 highest bands were off calibration. Sounds just
about like yours. After looking at the options, I decided to simply make
new scales for those bands. I did it by hand and the result looks quite
good, although the paper is whiter than the original background.

This is what ham radio is all about. Now, I suppose I will get death
threats for converting a perfectly good Millen dip meter to solid state.

Personally, I think the 90651 in its original condition is one of the least
practical grid dip meters around. It's big, heavy, and you need two hands to
use it. On top of that, it is not that sensitive, and the sensitivity is not
adjustable! If you want a real instrument, get a Boonton/Measurements Model
59.

Unless yours serves as a shelf queen, I think any modification is an
improvement! Go for it!

"If you want a real instrument, get a Boonton/Measurements Model 59."

Boy, I will second that. I have a number of grid dip meters. The 59 is my
favorite and blows all the others away. It is as close to perfection as
anything should be.

Colin K7FM


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COLIN LAMB wrote:
"If you want a real instrument, get a Boonton/Measurements Model 59."

Boy, I will second that. I have a number of grid dip meters. The 59 is my
favorite and blows all the others away. It is as close to perfection as
anything should be.

Colin K7FM

The Measurements 59 is a great little GDO. Two things you must be
aware of, though: First is the coil sets are all slightly different
in terms of their stray capacitance and inductance. As a result each
set is serialized to the 59 frame it belongs with. The second is the
frequency tics were hand penned onto the dial during calibration.
Don't try and clean the dial!

-Chuck Harris