[Boatanchors] Grid Dip Oscillator (GDO) Info Request

[Michael Bittner]

----- Original Message ----- 
From: "K5MYJ" <macklinbob at gmail.com>
To: "Jim" <Jbrannig at verizon.net>
Cc: "Boatanchors list" <boatanchors at mailman.qth.net>
Sent: Friday, June 01, 2018 12:40
Subject: Re: [Boatanchors] Grid Dip Oscillator (GDO) Info Request



> All coils have a parallel capacitor; it's call distributed capacitance.  I 
> have used my GDO to find the self-resonant frequency of stand-alone coils, 
> for example, in a multiband receiver where they can act as suck-out traps 
> for a coil that is currently active in the circuit.
>
> A coil without a parrellel capacitor is to make the antenna look longer. 
> It won't dip.

> But it should at a much higher frequency than you would normally expect.

Mike, W6MAB 


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