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Re: Grid Dip Oscillator
From: Mark S Graalman[SMTP:wb8jkr-at-juno-dot-com]
Sent: Saturday, November 22, 1997 7:46 AM
To: tesla-at-pupman-dot-com
Subject: Re: Grid Dip Oscillator
The dip meter is a useful device in antenna work and various other
things
involving tuned circuits. The main problem is that the FINEST dip meter
ever built (Millen) only went down to about 300 Khz, and the others only
to
1-1.5 Mhz. The other problems are the small coils the dip meter use don't
couple
well to the comparatively large coils used in Tesla systems. The use of a
dip meter
also requires some skill because as the dip meter is coupled to the
circuit under
test the dip meter oscillator can be pulled way off frequency if
coupled too
tightly.
Mark Graalman
On Fri, 21 Nov 1997 18:01:58 -0600 Tesla List <tesla-at-pupman-dot-com> writes:
>
>From: Anderson's Publishing[SMTP:andersons-at-geeky1.ebtech-dot-net]
>Sent: Thursday, November 20, 1997 7:55 PM
>To: tesla-at-pupman-dot-com
>Subject: Grid Dip Oscillator
>
>I was looking through the first issue of "On The Air!" magazine, a
>magazine for ham radio, and saw an article on building a device called
>a
>grid dip oscillator(or a drain dip oscillator). Has anyone any
>experience
>with these? The article says that you can use it to tune a circuit to
>a
>specific resonant frequency without powering the circuit. You set the
>dial to the desired frequency, then you adjust the circuit until the
>meter
>on the front dips. Sounds like a perfect tool for tesla coils. Any
>thoughts? TTYL!
>
>
>
>---
>Anderson's Publishing
>andersons-at-geeky1.ebtech-dot-net
>
>
>
>