Astatic Silver K Eagle Schematic
I use an Astatic Silver Eagle that I modified for a better tone and proper impedance matched for my Icom 718 . . . . I really love it. I recently bought a Silver K Eagle at a ham fest for my wife’s radio. When I opened it I discovered a vastly different circuit. I know that it was full of CB sound effects which I have disabled. My problem is that I cannot find a schematic for its pre amp circuit. Does anyone have a schematic or modification for this mic?
5XR you might start here...
How do I adapt a microphone astatic D-104 to a Yaesu FT920?
Hi HAM friend's:
I need of their help, I want to adapt a microphone astatic silver eagle to a Yaesu FT920
I hope to have their help
3TT, like I posted above ... probably find both here...
W0LPQ mny tnx's
Ok, thanks for informations
There are several Internet web pages devoted to D-104 restorations, conversions and adaptation to modern solid-state transceivers.
WA2MZF D-104 notes and schematics
Astatic used a number of bases for the D-104 microphone, you need to verify the base that you are working with.
Here are the schematic diagrams for the Astatic base units (G; T-UG8; T-UG9):
IF you have a bad crystal element, an inexpensive and suitable replacement (25LM022) is available from Mouser (Kobitone product).
Page 1216 of their catalog
N4JK's adaptation and FET pre-amp
KK5DR Mic pre-amp -
based upon Doug DeMaw's original QST articles (FAR Circuits has PC boards)
ND2M Audio Projects - Baby(X) and EQ5+
Simple microphone pre-amp for elecret OR dynamic elements
Last edited by W9GB; 07-08-2010 at 01:04 PM.
Nullius in verba