Contents J 1. Description ...................... 1.1 Model SK 1008 Mikroport Transmitter. . .. . . . .. . . .. . . . .. 1.2 Microphones ,... 1.3 Model EM 1008 Mikroport Receiver. . . . . . . . . . . . . . . . . . . . . . 1.4 Antennae . . . . . . .. Page 1 2. Preparing equipment for operation. . 2.1 Transmitter.................. 2.2 Microphones ,... 2.3 Receiver.................... 2.4 Antennae ,. 1 2 3 4 5 3. Operation........................ 3.1 Transmitter.................. 5 5 6 6 3.
1. Description 0 The SM 1008 wireless microphone system consists of a battery-operated miniature transmitter, Model SK 1008, which can be equipped with several different special microphones, and the battery/AC operated receiver, Model EM 1008, which can be operated with a variety of special antennae. 1.1 Model SK 1008 Mikroport transmitter The Mikroport transmitter is operated trom an ordinary 9 V battery, Standard units are designed for two trequencies: 36.7 and 37.1 MHz.
If the micraphone spacing is increased, (or if loudness is reduced), It will be necessary to advance the control accordingly, while loud speech or a reduction in micraphone distance requires a lower setting. To facilitate precise matching of the system in studio operation, it should be mentioned that correct adjustment of the sensitivity control is obtained when the audio output of the receiver supplies + 6 db (1.55 volts) at modulation peaks. 3.
more receivers to be operated in the diversity mode. () Since it is highly unlikely that field strength minima will occur simultaneously at two different antenna sites, the antennae of the two receivers should be located at a distance of several yards from each other. The two receivers must be connected to each other, the cables provided for diversity operation being inserted into the 'diversity' sockets.
I 111: Technical Carrierfrequencies, switchable. . . 36.7 and 37.1 MHz Data SK 1008 Frequency drift at temperatures between + 68° F (+ 20° C) and + 113° F (+ 45° C) and an operating voltage deviation of 200/0 < 15 kHz Radiated output. approximately ~) I111 1]11 . . . . . . . . 1 mW 1I ,I Type of modulation. . . . FM 1111 Noiseswing. . . . . . . . . . . ~ 100 cis AF input sensitivity(variable) . . . 1 mV/40 kHz swing Transmissionrange:!: 3 db . . . . 35 Hz - 20 kHz Pre-emphasis. . .
Technical Data MD 1008 Response.. . . . . . . . . . . Maximum deviation from specified frequency microphone) response (for lavalier ......... Field no-load transmission factor at 0.2 mV/l-tbar 400 ohms . . . . . Dimensions . . . . . . . . . . . Weight.. . . . . . . . . . . . . spherical 1.6" x 1.7" x 1.3" Technical Input I. . . . . . unbalanced, for 60-ohm source impedance, 13 mm RF jack complying with DIN 47 283 Data EM 1008 Input Directional characteristic 0.24Ib. . . . . . . . . . . . . .
EM 1008 Signal-to-noise ratio at 40 kHz swing and more than 50 pV antenna . . . . . . . . . . > 65 db . . . . . . 36.7 and 37.1 MHz in accordance with the Reception frequencies voltage. transmitter Pull-in range of automatie tuning :t 100 kHz Adjacent channel rejection with 0.4 MHz channel spacing Electronic squelch circuit; Adjustable cut-off antenna voltage. . > 60 db Diversityoperation. I I I . . . . . . . Tape recorder remote control . . . 11111 I11 1II Power supply . . . . . . . . . .
(Oi Technical Input (unbalanced) Data T203 Output (unbalanced) . . . . . . . . . . . . . . . 1 V, variable Audio-trequency range. 100 - 15000 Hz . . . . . Deviation trom specitied trequency response (De-emphasis 50 usec) ;;;; :!: 2 dB Non-linear distortion at 40 kHzswing and 200 f-lVantenna voltage tor 1 V output voltage. . . . . . ;;;;3% Signal-to-noise ratio at 40 kHz swing and more than 20 f-lVantenna voltage. . . . . . . . > 50 dB . . . . . . 36.7 MHz and 37.
Technical Data MD 4008 Frequency response. . . . . . . 80 to 12,000 Hz Maximum deviation from nominal curve ,. :t 3 db Field no-load transmission factor at 1000 Hz ,..... .2 mV/,ubar Electrical impedance . . . . . . . 700 ohms Directionalcharacteristic . . . . . super cardioid Dimensions . . . . . . . Weight . . . . . . . . . . . . . 0) 1.6" x 1.7" x 1.3" .24Ibs. 11 111 11 1I 11 11 111 1 1 11111 11: : II 111 .») 1 11I1 111:1 111111 iIIill 11111I 11111.
