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Thread: Astatic Silver K Eagle Schematic

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  1. #1

    Default 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?

    Thanks

    Wayne
    AD5XR

  2. #2
    Join Date
    Jan 2000
    Location
    Indiana
    Posts
    4,972

    Default

    5XR you might start here...

    http://www.qsl.net/g4wpw/astaticbook.pdf

  3. #3
    Join Date
    Oct 2006
    Location
    North Carolina
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  4. #4

    Default 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
    73's XE3TT

  5. #5
    Join Date
    Jan 2000
    Location
    Indiana
    Posts
    4,972

    Default

    3TT, like I posted above ... probably find both here...

    http://www.qsl.net/g4wpw/date.html

  6. #6

    Default W0LPQ mny tnx's

    Ok, thanks for informations

  7. #7

    Post

    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
    http://www.qsl.net/wa2mzf/d104.html

    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):
    http://www.barovelli.com/radio/astatic/astatic.htm

    IF you have a bad crystal element, an inexpensive and suitable replacement (25LM022) is available from Mouser (Kobitone product).
    Page 1216 of their catalog
    http://www.mouser.com/catalog/622/1216.pdf

    N4JK's adaptation and FET pre-amp
    http://members.cox.net/n4jk/d104.htm

    KK5DR Mic pre-amp -
    based upon Doug DeMaw's original QST articles (FAR Circuits has PC boards)
    http://www.kk5dr.com

    ND2M Audio Projects - Baby(X) and EQ5+
    http://nd2m.home.comcast.net/home.htm

    Simple microphone pre-amp for elecret OR dynamic elements
    http://www.epanorama.net/circuits/micamp.html

    w9gb
    Last edited by W9GB; 07-08-2010 at 01:04 PM.
    Nullius in verba

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