Related Manuals for Pyramid Communications VR-100
Summary of Contents for Pyramid Communications VR-100
- Page 1 15182 Triton Lane #102 Huntington Beach CA 92649 VR-100 Vehicular Repeater Revision D Aug 25 1994...
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Page 2: Table Of Contents
Alignment ................... 8 RF Alignment ..................8 Repeater Alignment ................9 CTCSS Table ..................10 Figure 1 RF Test Points ..............11 Crystals ..................... 11 Figure 2 VR-100 Parts Locator ............12 Parts List ................... 13 Schematic ................. Fold Out... -
Page 3: Specifications
VR-100 Specifications General: Operation: Motorola PAC/RT® compatible plus trunking. Modes: Priority, non-priority disabled, test mode. Indicators: 8 high brightness LEDs, handheld queueing tones. Interface: 9 pin "D" connector with 6 ft. cable. Adjustments: Receive sensitivity, transmit dev., squelch threshold, local mic sens., lock tone decode frequency, lock tone dev., local speaker audio. -
Page 4: Introduction
VR-100 will repeat the signal to the users handheld. The user may also transmit back to the VR-100 via the handheld, and their transmission will be repeated back to the base by the high power mobile radio, effectively extending the range of the low power handheld. -
Page 5: Functional Description
3 minute time-out timer in the base to handheld direction. If the base transmits to the mobile for more than 3 minutes, the VR-100 will send an error tone to the handheld, unkey the repeater and remain idle until the base ceases transmissions. -
Page 6: Trunking Operation
VR-100 and increment it's priority counter and cease transmission. This is the self clearing mode to prevent radio "collisions". If the user were to key the mobile radio locally and his VR-100 is the priority, the VR-100 will detect the local mic PTT and repeat the transmission to the other handhelds at the site so that they would not miss half of the transmission. -
Page 7: Installation
Controls the polarity of the remote enable/disable feature of the VR-100. If the remote enable line (pin 3 of P1) goes low to activate the repeater, set JP1 to the (-) position. If pin 3 goes high, set JP1 to the (+) position. If pin 3 is not used and you wish to have the repeater active at all times set JP1 to the (-) position and ground pin 3. -
Page 8: Radio Connections
Note: This line does not have a pull up resistor; if connected to an open collector or dry contact output, add a 10K resistor between pin 3 and pin 5 of P1 on the VR-100 main PCB. Mobile PTT output. Connect to mic PTT on the mobile radio, Pin 4: or a line that goes active low to transmit. - Page 9 Local mic audio. When the user keys the mobile radio and the Pin 8: VR-100 connected to it is the priority unit, the local mic audio can be repeated to the handhelds. Connect this line to a point in (Brown) the mobile transmitter audio path after pre-emphasis but before limiting or filtering.
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Page 10: Alignment
RF Alignment Important: The case of the VR-100 is integral to the heat sink for the RF module and voltage regulators. Do not transmit at full power for extended periods of time with the PCB removed from the case or damage may result! 1. -
Page 11: Repeater Alignment
Set the service monitor connected to the Receive Audio Level: VR-100 to the generate mode and inject an RF signal at 1mV with a 1kHz tone at ±3kHz deviation. Connect a scope probe to TP1 on the main PCB. Adjust R122 on the RF PCB for 1VPP as read at TP1. -
Page 12: Ctcss Table
.4uV. Increase the signal generator output level to Local speaker level: 1mV. Connect an 8 Ohm speaker to J1 of the VR-100 and adjust RV7 on the main PCB for the desired receive audio level. Tone Tone 67.0... -
Page 13: Crystals
VR-100 Figure 1 RF Test Points Crystals The model VR-100 uses a Standard Communications Corp. CU33 telemetry module for the RF section. Crystals are available from: Frequency Management Co. 15302 Bolsa Chica Street Huntington Beach CA 90649 (800) 800-9825 The crystal frequencies can be determined from the following... - Page 14 Figure 2 VR-100 Main Board Page 12...
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Page 15: Parts List
VR-100 Parts List Reference Description Part # C1,C32,C34 .068μfd Polyester Cap 1040-683 C2,C21 1μfd 16V Electrolytic Cap 1032-105 C3-C6, C33 100ufd 16V Electrolytic Cap 1032-107 10μfd 16V Electrolytic Cap 1032-106 C8-C13,C22,C26-C31, C35,C37,C38 .1μfd Polyester Cap 1040-104 2.2μfd Tantalum Cap 1031-225... - Page 16 470K 470K Bias Bias Pyramid Communications Pyramid Communications Pyramid Communications MC3403 MC3403 MC3403 MC3403 1N914 1N914 VR-100 Vehicular Repeater VR-100 Vehicular Repeater VR-100 Vehicular Repeater 470K 470K Size Size Size CAGE Code CAGE Code CAGE Code DWG NO DWG NO...
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