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Model RPT-30 
Remote Pick-Up Broadcast Transmitter

 

Specifications 

 

Frequency Range and 

Maximum Power Output: 

140 - 180 MHz. - 45 watts 
200 - 260 MHz. - 40 watts 
280 - 340 MHz. - 35 watts 
400 - 480 MHz. - 30 watts 

 

 

RF Connector:

 

SO-239 

 

 

Operating Temp. Range:

 

-10 C

º

 to +45 C

º

 

 

 

Modulation (Specify): 

10KOF3E 
25KOF3E 
50KOF3E 

FCC Frequency Group P 
FCC Frequency Group K, L, N2 
FCC Frequency Group N1, R 

 

 

Channels (Frequencies): 

Two frequencies selected by switch. Frequency separation 
1.1% maximum. 

 

 

Frequency Stability: 

Mobile:  .0005% 
Base:   .00025% (above 400 MHz.)  

 

 

Spurious Emissions: 

Meets FCC requirements. 

 

 

Audio inputs: 

Four balanced microphone (150 ohms) inputs (XLR-3) with 
mixing controls. One input switchable to balanced line level 
at microphone #4 input and D connector on rear panel. 

 

 

Modulation Control: 

Broadcast-quality compressor/limiter built in. 

 

 

Encoding: 

Subaudible 27 Hz. tone encoder built in. 

 

 

Metering/Indicators: 

Illuminated meter indicates audio compression, relative RF 
output, relative supply voltage. Flashing LEDs indicate 
“Antenna” (VSWR too high) and “Temp.” (over-tempera-
ture indicator). 

 

 

Controls: 

(4) INPUT LEVEL, METER switch, ENCODE switch, 
FREQUENCY switch, MONITOR jack. 

 

 

Power Requirements: 

120/220/240 VAC (voltage to be specified on original or-
der), 50/60 Hz 
DC operation on 11 - 13.5 volt 

negative ground

 

 

AC Fuse Rating: 

For 120 v. use

 2 1/2 Amp fuse

 

 

 

Accessory Connector: 

9-pin D connector for DC power, remote control, encode, 
line level input. 

 

 

Содержание RPT-30

Страница 1: ...or other costs of any nature as a result of the use of the products manufactured or supplied by the Seller whether used in accordance with instructions or not This warranty is in lieu of all others e...

Страница 2: ...and Adjustment Function of RPT 30 Semi Conductors Main Frame Schematic 702 074 Parts List 702 074 Pre Amp Mixer Schematic 800 251 Board Parts List 800 251 Audio Board Schematic 800 166 Parts List 800...

Страница 3: ...This page intentionally left blank...

Страница 4: ...processing technique pioneered and proven by Marti Electronics in thousands of re mote pick up broadcast transmitters over the past 25 years has been applied to this model re sulting in the highest au...

Страница 5: ...50 ohms inputs XLR 3 with mixing controls One input switchable to balanced line level at microphone 4 input and D connector on rear panel Modulation Control Broadcast quality compressor limiter built...

Страница 6: ...9 21 cm wide x 8 89 cm high x 33 78 cm deep Options available Second crystal for dual frequency operation rack mounting brackets mobile mounting brackets antenna switching relay audio companding etc F...

Страница 7: ...ghly inspect for concealed damage If damage is discovered stop further unpacking and request immediate inspection by local agent of carrier A written report of the agent s findings with his signature...

Страница 8: ...This system consists of the originating transmitter with its antenna inside the building which transmits to a mobile relay parked outside the building The mobile relay consists of a Marti Model AR 10...

Страница 9: ...operation anticipated The antenna s are usually mounted on top of the vehicle to provide maximum height Transmitter Mounting 1 Locate transmitter where vent holes on top and rear of unit are not obst...

Страница 10: ...ce should employ a relay with low resistance contacts lo cated near the transmitter Mobile Repeat Mobile repeat operation is covered under STATION ARY REMOTE BROADCAST INSTALLATION Electrical connecti...

Страница 11: ...arti After relay is installed connect RECEIVER jack on RPT 30 rear panel to receiver an tenna connector using 20 inch Coaxial Cable No 585 026 Receiver muting during transmitting is accomplished using...

Страница 12: ...nically tight then coated with a weather proofing material over at least two layers of vinyl plastic electrical tape Moisture problems in antenna systems are usually traced back to connectors which ha...

Страница 13: ...STALLING ANTENNAS KEEP AWAY FROM POWER LINES...

Страница 14: ...ace CONTROL switch in STANDBY position and allow METER pointer to reach 0 VU Slowly in crease gain clockwise until METER begins deflecting to the left on audio peaks Maximum deflection should be 3 to...

Страница 15: ...the transmitter This can be caused by obstructed vent holes in the top or rear of the unit inoperative cooling fan or antenna prob lems Do not operate RPT 30 until the cause of overheat ing is correct...

Страница 16: ...ulator RF output is frequency multiplied in the multiplier board to obtain the various operating frequencies listed on the RPT 30 specification sheet The multiplication factor for various frequency ba...

Страница 17: ...nnector as well as the AC line input have radio frequency filters In addition to the L and C filter components a reverse polarity protector diode D2 is located on the 800 253 board METER BOARD 800 252...

Страница 18: ...rator Marconi Model 2022C Spectrum Analyzer Hewlett Packard Model 8558B Wattmeter 50 ohms impedance Bird Model 43 5 or 50 watt element 100 250 MHz or 400 1000 MHz Bird Automatic Modulation Meter Wavet...

Страница 19: ...This page intentionally left blank...

Страница 20: ...0 90 TP5 0 30 0 60 TP5 0 80 1 60 q 8 volt regulator 7 45 7 65 q Audio Compressor Meter set at 0 VU q Limiter Set q Encode frequency set at 27 Hz q Encode frequency set at 1 KHz deviation q Set power o...

Страница 21: ...meter to TP2 adjust L1 and L2 for maximum indication 3 Move negative probe to TP3 adjust L3 and L4 for maximum indication 4 Move negative probe of meter to TP4 adjust L5 and L6 for maximum indication...

Страница 22: ...quency pot R37 for maximum indica tion on the DECODE SIGNAL LEVEL meter of the receiver 4 Connect an audio voltmeter to the output terminals of the Marti receiver Feed a 100 microvolt signal into the...

Страница 23: ...or Q2 800 160 Transistor Darlington Amplifier for Temperature Control D1 800 160 Diode Temperature Compensation 800 160 1 800 160 Module Frequency Control Q1 800 163 Transistor Frequency Tripler Q2 80...

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