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Astatic Silver K Eagle Schematic

Discussion in 'Microphones, Speakers & Audio Processing' started by AD5XR, Mar 1, 2008.

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  1. AD5XR

    AD5XR Ham Member QRZ Page

    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. W0LPQ

    W0LPQ Ham Member QRZ Page

    5XR you might start here...

    http://www.qsl.net/g4wpw/astaticbook.pdf
     
  3. KI4RVH

    KI4RVH Ham Member QRZ Page

  4. XE3TT

    XE3TT Ham Member QRZ Page

    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. W0LPQ

    W0LPQ Ham Member QRZ Page

  6. XE3TT

    XE3TT Ham Member QRZ Page

    W0LPQ mny tnx's

    Ok, thanks for informations
     
  7. W9GB

    W9GB Ham Member QRZ Page

    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: Jul 8, 2010
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