INSTRUCTION MANUAL IFBR1a UHF Multi-Frequency Belt-Pack IFB Receiver IFBR1a, IFBR1a/E01, IFBR1a/E02 Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.
IFBR1a, IFBR1a/E01, IFBR1a/E02 FCC Notice Safety Notes Excessive sound levels can cause permanent hearing damage. 1. Always adjust the volume to the lowest level before listening to unknown transmissions. 2. Use the lowest reasonable level consistent with hearing safety. 3. Don’t use high sound levels in the earphone to overcome high ambient sound levels. That is absolutely foolish! Demand and use high isolation earphones. 4. Don’t expose your ears to sound levels that cause them to ring.
IFB Receiver Table of Contents Safety Notes............................................................................ 2 FCC Notice.............................................................................. 2 Features and Functions......................................................... 4 Control Knob......................................................................... 4 LED Indicator........................................................................ 4 Headphone Jack..........................
IFBR1a, IFBR1a/E01, IFBR1a/E02 Features and Functions The frequency agile IFB R1a FM Receiver is designed to operate with the Lectrosonics IFB transmitters and compatible Digital Hybrid transmitters. Microprocessor control of frequencies within each frequency block provides the ability to work around interference problems quickly and simply.
IFB Receiver Headphone Jack A 3.5 mm mini phone jack accommodates a standard mono or stereo type 3.5 mm plug. The unit will drive low or high impedance earphones. The jack is also the receiver antenna input with the earphone cord acting as the antenna. The cord length is not critical but must be at least 6 inches minimum. A simple strain relief to avoid accidental disconnection can be applied with the included small Velcro hook and loop strip.
IFBR1a, IFBR1a/E01, IFBR1a/E02 Battery Instructions Normal Operation The battery you use in the R1a receiver should be a 9 Volt alkaline or LiPolymer rechargeable type. Lithium batteries can also be used for extended operating time. An alkaline or LiPolymer battery will provide up to 8 hours of operation and a lithium battery will provide up to 20 hours of operation. Carbon zinc batteries, even if marked “heavy duty” will only provide about 2 hours of operation.
IFB Receiver 3. The unit goes into program mode and does a scan/ search. Previously programmed frequencies will be automatically skipped. When the unit stops on a new frequency audio from the transmitter will be heard in the earphone and the LED will stop blinking rapidly and will change to a slow blink mode. The unit is now waiting for an operator decision. You must now decide to either SKIP or STORE the frequency (step 4 or 5 below.) Switching the power to OFF without storing will delete the frequency.
IFBR1a, IFBR1a/E01, IFBR1a/E02 Advanced Operation Direct Entry Mode This mode takes away the scan capability and replaces it with the ability to program frequency channels into memory (pre-sets) directly via the knob and hex switches. In Direct Entry Mode, 5 additional channel pre-sets are available, for a total of 10.
IFB Receiver Defeating the Switch The switch function on the knob can be defeated if so desired to eliminate the scanning function. This is done by simply removing a washer from underneath the knob. 1) Use the allen wrench to loosen the set screws on the knob. 2) Remove the knob and the small washer P/N 28443. 3) Put the knob back on the shaft without the washer and slide it down flush with the housing. 4) Hold the knob against the housing and tighten the set screws.
IFBR1a, IFBR1a/E01, IFBR1a/E02 Troubleshooting Symptom Possible Cause LED NOT LIT • Battery not installed or depleted. • Power not turned on. NO SOUND IN HEADPHONE • AUDIO LEVEL turned all the way down. • Headphone plug not inserted fully. • Defective headphone or connector • Transmitter not operating. (See separate transmitter manual.) • Receiver not on the same frequency as the transmitter. See pages 6 and 8. DISTORTED SOUND • Transmitter gain (audio level) is far too high.
IFB Receiver Parts and Accessories PR1A Leather Pouch w/belt clip ON/Off/Volume knob and parts Knob Assembly Part Numbers 35854 allen (hex) wrench 28767 belleville washer 28764 set screws 26011-1 knob guard 28443 split lock washer 26297-1 blue knob Rio Rancho, NM 11
IFBR1a, IFBR1a/E01, IFBR1a/E02 Specifications and Features Operating frequencies (MHz): US E02 Block 470 470.100 - 495.600 779.125 - 787.875 Block 19 486.400 - 511.900 797.125 - 805.875 Block 20 512.000 - 537.500 806.125 - 809.750 Block 21 537.600 - 563.100 Block 22 563.200 - 588.700 Block 23 588.800 - 607.900 and 614.100 - 614.300 Block 24 614.400 - 639.900 Block 25 640.000 - 665.500 Block 26 665.600 - 691.100 Block 27 691.200 - 716.700* Block 28 716.800 - 742.300* Block 29 742.400 - 767.
IFB Receiver Service and Repair If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repair. Make sure you have followed the setup procedure and operating instructions. Check the interconnecting cables and then go through the Troubleshooting section in this manual. We strongly recommend that you do not try to repair the equipment yourself and do not have the local repair shop attempt anything other than the simplest repair.
IFBR1a, IFBR1a/E01, IFBR1a/E02 14 LECTROSONICS, INC.
IFB Receiver Rio Rancho, NM 15
LIMITED ONE YEAR WARRANTY The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer. This warranty does not cover equipment which has been abused or damaged by careless handling or shipping. This warranty does not apply to used or demonstrator equipment. Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor.
