[ICOM] D-104 on old Icom (IC-745)?

[Lawrence Young]

Art: The D-104 microphone was designed for audio amplifiers with a high impedance input in the hundreds of thousands to megohm input region. The IC745 is typical of todays tranceiver which requires a 600 to 900 Ohms output impedance microphone. You can use the D-104 if a suitable interface circuit is employed between the microphone and the transceiver. This can usually be put inside the microphone stand. A good description of this can be found on N4JK's web page at http://members.cox.net/n4jk/d104.htm.
Good luck. Larry K4LXV  

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