[Microphones] 729SRD microphone

[Bill Marx]

>From Drake list:

Drake sold their model 729SRD microphone as an accessory for the T-4XB. According to a sales brochure from the early 1970s it is
described as a, "Drake-modified EV 729SR for VOX or PTT with Drake Xmtrs.  Hi-Z Ceramic Mike. Highly directional.  Dimen: 8-1/4" x
4" W x 4-1/4" D.  Wt. 1lb., incl. cable."  The list price was $17.00.  The 4 inch width is due to the base in which the microphone
sat.

 The Drake HF transmitters were high impedance microphone inputs (50 kilohms nominal), although low impedance with the TR-7 was
provided via a separate pin input.  A scanned image of that portion of the sales brochure can be viewed at:
http://members.ispwest.com/n6mm/drake/drake.htm .
Also included in this portion of the brochure is a description of the MS-4 speaker cabinet.

73, Harvey, N6MM