B5DM515Low Power Transceiver Belt-Worn Wireless Microphone

Telex Model TR-800 Beltpack Owners/Users Manual (Preliminary Information). General Description: The Telex Model TR-800 Beltpack Transmitter/Receiver is a component of the BTR-800 Wireless Intercom System. Each BTR-800 can use up to 4 TR-800 units per base station. The TR-800 operates within the 518 to 608 and 614 to 746 MHz range. (TV Channels 22-36 and 38-59). The receiver section generally operates on selected frequencies within the lower half of the frequency range and the transmitter section operates within the upper half of the frequency range. The actual transmit and receive frequencies are contained within two 18 MHz wide sections of the frequency range. Maximum Transmitter Output Power is 50 mW. The TR-800 transmit power is automatically reduced when the unit is close-in to the base station to aid in intermodulation reduction. Operating frequencies can be selected from pre-set groups or the user can select special operating frequencies within the 18 MHz wide allotments. The Talk button on the top panel can be switch selected to operate in the Push to Talk mode or the Push to Transmit mode. Push to transmit allows multiple TR-800 units to function as simplex units on one of the BTR-800 Channels. The microphone gain control, along with the LCD Display, talk function switch and frequency/group controls are located on the back panel. The ON/OFF/Volume Control, Talk Button, Low Battery, Modulation Indicator and the Talk Light are located on the top panel. Wireless Talk Around and Stage Announce buttons with their indicators are also on the top panel Transmit and Receive antennas are attached to the TR-800. Either or both unscrew for field replacement. (screw connections are not coaxial). The TR-800 Beltpack can be powered by AA Alkaline or a Nickel-Metal Hydride Battery pack. TR-800 Users/Owners Manual Page 2 Specifications: Input Power.......................................9.0 VDC Alkaline or NiMH. Antennas..........................................attached. Channels, two, frequency agile, 25 KHz steps, within 18MHz allotments. Frequency Range........518-608 and 614-746 MHz. Within 3 TV Channels, 18 MHz allotments. Transmitter: RF Power Output..............................................50 mW typical. Frequency Deviation..........................................+/- 40 KHz Peak. Audio Frequency Response...................................200 Hz to 10 KHz. Microphone input level..........................7.75 mV for 40 KHz Deviation. Receiver: Sensitivity...............................................0.8 uV for 12 dB SINAD. Squelch................................................Opens at 20 dB SINAD. Modulation Acceptance...................................40 KHz Nominal. Audio Frequency Response...................................200 Hz to 10 KHz. Audio Output (headset).....................................200 mW, 600 Ohms. END

IN MIC AMPLIMITERCOMPANDGATEPREEMPLPFPLLVCO TR-800 BLOCK DIAGRAM 632-722 MHZ LPFOUTPUT TR-800 ACTIVE DEVICES DES PART NO. FUNCTION 1. Q802 VP0610 SWITCH 2. Q803 BFG540X AMPLIFIER 3. Q804 BFG540X AMPLIFIER 4. Q805 MMBT3906 CURRENT SOURCE 5. Q806 MMUN2112 SWITCH 6. Q807 MMUN2212 SWITCH 7. Q808 BFG540X AMPLIFIER 8. Q809 MMBT3906 CURRENT SOURCE 9. Q810 BFG540X AMPLIFIER 10. U801 TC55RP500 REGULATOR 11. U802 TRF2050 SYNTHESIZER

TR-800 Operational Description A. Microphone Amplifier U1 amplifies the signal from the microphone by an amount determined by the user adjustable gain control. The range of adjustment is from 0 to 40 dB. B. Modulation Limiter U2A is configured as a variable gain amplifier and U3 is configured as a window detector. When the audio fed into U3 exceeds the preset threshold, U3A pulls low on negative peaks and U3B pulls low on positive peaks. This discharges C13 and reduces the gain of U2A until the input to U3 is just at the threshold of limiting. C. Compressor U2C is a linear compressor that is used to improve the system signal to noise ratio. A complementary expander is used at the receiver. D. Gate U4A is configured as an audio gate. When Q3 is off the audio entering U4A is amplified by a factor of 2. When Q3 is on the audio is gated off. E. Pre-emphasis U4B provides pre-emphasis which begins at 100 microseconds and ends at 15 microseconds. The output of U4B feeds the modulation limiter. F. Low Pass Filter U4D is a 3 pole low pass filter with a cutoff frequency of 10 kHz. G. PLL HY801 is a VCO operating on the output frequency. U802 is a phase locked loop that controls HY801. U802 is serially loaded with frequency data by U901. The modulating signal is fed into the loop via VR801, which is used to set the frequency deviation. H. Output Amplifiers Q803, Q804, Q808 and Q810 amplify the signal from HY801 and provide reverse isolation. Q807 is used to turn these stages on only after the loop has achieved lock. C831, C832, C833, L809 and L810 provide impedance matching and harmonic suppression. Operational Description. TR-800 Receive Board Assembly Rev PB 12-05-00 RF Signals from the antenna arrive at J301-1 and are applied to the Ceramic resonator Circuits of Z301, 302, Z303 and their components. These parts add selectivity before the signal is applied to the 1 st RF Amplifier Q301. The signal is amplified by Q301 and routed to Z304, Z305 and their components where further selectivity is applied. Total selectivity at this point is 18 MHz bandwidth. The signal is then fed to U402, the 1 st IF IC. Also fed to U402, through C424 is the 1 st LO Signal. The 1 st LO is a PLL VCO consisting of the VCO HY401, and U401A the main PLL lock circuit that receives its frequency data off-board. The frequency range of the VCO is from 452.3 MHz to 638.3 MHz, in 18 MHz wide bands. (low end of each band –65.7 MHz). The LO signal is subtracted from the RF signal in mixer U402 to produce the 1 st IF frequency of 65.700 MHz. This IF signal flows through T401/L401 and their components resonant at 65.7 MHz. The 65.7 MHz signal is then routed to U403A-1, the 2 nd mixer. Crystal Y401 and its components oscillate at 55.0 MHz and are applied to mixer U403A. The difference signal between 55.0 and 65.7 is selected as the 2 nd IF signal of 10.7 MHz. The 10.7 MHz IF signal is applied to L403 and its components and ceramic filter FL401 for additional selectivity. This signal is applied to U403B-18 where it is amplified and fed to another ceramic filter, FL402. The filtered IF signal is then applied to U403C-14 where the signal is limited, detected and a RSSI signal is available at U403C-7 for use as a transmit power control signal. L405 is the Quadrature detector inductor and is tuned for best audio at U403C-8. This audio is fed to IC U405 where the signal is buffered and set to the correct level for its following circuits. Q401 is used to set the VCO and PLL IC operating voltage to 5.0 VDC. END

Bill of Materials 770643PD.S01 TR-800 PARTS LIST AUDIO BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== 1 1DA TLV2362 U10 BE-SO8 1 1DA LM393 U3 BE-SO8 1 1DA LM393 U7 BE-SO8 1 1DA LM393 U9 BE-SO8 1 2464 24AA64 U12 BE-SO8 2 2951 LP2951 U5,U6 BE-SO8 1 34119N MC34119 U8 BE-SO8 1 4DA TLV2362 U10 BE-SO8 1 4DA LM393 U7 1 4DA LM393 U9 BE-SO8 1 575ALC SA575 U4 BE-SSOP20 1 575EC SA575 U2 BE-SSOP20 1 575EC SA575 U4 BE-SSOP20 1 575EE SA575 U2 BE-SSOP20 1 575EE SA575 U4 15-Jan-01 16:36 Page 1 Bill of Materials 770643PD.S01 TR-800 PARTS LIST AUDIO BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== BE-SSOP20 1 575EE1 SA575 U4 BE-SSOP20 1 7DA TLV2361 U1 BE-SOT23-5 1 7SZ66 NC7SZ66 U11 BE-SOT23-5 11 C 100PF C11,C2,C30,C4,C43,C46, BE-0603 C47,C48,C55,C6,C9 1 C .022UF C12 BE-0603 2 C .001UF C14,C33 BE-0603 3 C .0015UF C23,C26,C28 BE-0603 3 C .015UF C24,C25,C27 BE-0603 3 C .01UF C31,C32,C37 BE-0603 2 C .1UF C36,C54 BE-0603 1 C .0018UF C53 BE-0805 1 C 390PF C56 BE-0603 7 CE 10UF C1,C10,C13,C16,C21,C3, BE-ST-A C34 1 CE .47UF C15 BE-ST-A 15-Jan-01 16:36 Page 2 Bill of Materials 770643PD.S01 TR-800 PARTS LIST AUDIO BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== 5 CE 2.2UF C17,C18,C41,C45,C7 BE-ST-A 10 CE 1UF C19,C20,C22,C39,C40,C42, BE-ST-A C49,C5,C50,C57 2 CE 10UF C35,C38 BE-ST-B 4 CE .1UF C44,C51,C52,C8 BE-ST-A 2 D TMPD4148 D1,D3 BE-SOT23 1 DD70 BAV70 D2 1 DL TALK DS1 1 DL LO BAT/PEAK DS2 4 E VAL E1,E2,E3,E4 4 E VAL E5,E6,E7,E8 SHORTING-PAD 4 FB FB1,FB2,FB3,FB4 BE-0805 1 FL-EXC EXCCET220U FL1 BE-FLEXC 2 LA 270NH L1,L2 BE-0805CS 1 P J1-1 J1 JST-ZH-2PIN-CON 15-Jan-01 16:36 Page 3 Bill of Materials 770643PD.S01 TR-800 PARTS LIST AUDIO BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== 1 P J2-1 J2 FW-SAMTEC-12PIN 1 P J3-1 J3 CON-SAM-FC1-15 1 P J4-1 J4 CON-SAM-FC1-10 1 P J5-1 J5 FW-SAMTEC-12PIN 1 P J6-1 J6 CON-SAM-FC1-10 1 P J7-1 J7 SLM-8 1 P J8-1 J8 JST-ZH-2PIN-CON 1 Q1100 MTSF2P02 Q5 BE-SSOP-8 3 QNEBC MMBT3904 Q2,Q3,Q4 BE-SOT23 1 QPEBC MMBT3906 Q1 BE-SOT23 2 R 1K R1,R9 BE-0603 1 R 150K R10 BE-0603 5 R 47.5K R11,R18,R33,R47,R8 BE-0603 11 R 10K R12,R13,R15,R21,R34,R35, BE-0603 R37,R39,R45,R46,R61 1 R 3.32K R14 15-Jan-01 16:36 Page 4 Bill of Materials 770643PD.S01 TR-800 PARTS LIST AUDIO BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== BE-0603 2 R 33.2K R16,R50 BE-0603 2 R 26.7K R17,R3 BE-0603 6 R 100K R19,R36,R5,R6,R62,R63 BE-0603 1 R 18.2K R2 BE-0603 3 R 56.2K R20,R28,R38 BE-0603 1 R 562K R22 BE-0603 1 R 267K R23 BE-0603 2 R 976K R24,R26 BE-0603 3 R 182K R25,R32,R4 BE-0603 1 R 2.37K R29 BE-0603 1 R 4.99K R30 BE-0603 1 R 7.5K R31 BE-0603 1 R 24.3K R40 BE-0603 1 R 3.01K R41 BE-0603 15-Jan-01 16:36 Page 5 Bill of Materials 770643PD.S01 TR-800 PARTS LIST AUDIO BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== 2 R 75K R42,R51 BE-0603 2 R 10 R43,R44 BE-0603 1 R 30.1K R48 BE-0603 1 R 39.2K R49 BE-0603 2 R 332 R52,R53 BE-0603 2 R 200K R54,R57 BE-0603 1 R 22.1K R55 BE-0603 1 R 332K R56 BE-0603 1 R 1.5K R58 BE-0603 1 R 15K R59 BE-0603 1 R 3.92K R60 BE-0603 1 R 2.21K R7 BE-0603 1 RVA 10K VR2 RV-57212 1 RVA-SSS 10K VR1 15-Jan-01 16:36 Page 6 Bill of Materials 770643PD.S01 TR-800 PARTS LIST AUDIO BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== 30 TP TP1,TP10,TP11,TP12,TP13, PAD050 TP14,TP15,TP16,TP17, TP18,TP19,TP2,TP20,T P21, TP22,TP23,TP24,TP25, TP26,TP27,TP28,TP29, TP3, TP30,TP4,TP5,TP6,TP7 , TP8,TP9 Total Parts: 202 15-Jan-01 16:36 Page 7 Bill of Materials 770645PC.S01 TR-800 PARTS LIST RECEIVER BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== 1 13143 MC13143 U402 1 605 SA615 U403 1 7025A TRF2050 U401 1 7DA LM821 U405 6 C * C301,C302,C303,C307, BE-0603 C308,C309 7 C 100PF C304,C306,C413,C424, C425,C427,C428 5 C .001UF C305,C405,C417,C426, C438 14 C .1UF C408,C410,C411,C412, C422,C423,C434,C441, C442,C444,C445,C446, C447,C454 5 C .01UF C409,C418,C435,C450, C451 2 C .047UF C414,C416 2 C 22PF C419,C436 2 C 10PF C429,C437 1 C .5PF C430 1 C 82PF C431 15-Jan-01 16:38 Page 1 Bill of Materials 770645PC.S01 TR-800 PARTS LIST RECEIVER BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== 2 C 47PF C432,C449 1 C 8.2PF C433 1 C 27PF C439 1 C 24PF C440 1 C 2.7PF C448 2 CE 10UF C415,C420 1 CE 100UF C421 2 CE 1UF C443,C455 1 CE .1UF C453 6 CF 100PF C401,C402,C403,C404, C406,C407 5 CV 1-5PF VC301,VC302,VC303,VC304, TRIMMER-9402SL VC305 1 E VAL E401 PAD100 2 IFFILTER SFECV10.7MS3 FL401,FL402 SMT-SFECV10.7 1 JH J301-1 J301 CON-SAM-2P 15-Jan-01 16:38 Page 2 Bill of Materials 770645PC.S01 TR-800 PARTS LIST RECEIVER BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== 1 JH J402-1 J402 CON-SAM-3P 1 LA .68UH L402 1 LA 4.7UH L403 1 LA 39UH L404 1 LVA MC-152 L401 1 LVA 4.7UH L405 1 NPN-BCEE BFG425 Q301 SOT343R 1 NPN-EBC MMBT3904 Q401 SOT23 1 P J302-1 J302 CON-SAM-3P 1 P J401-1 J401 CON-SAM-2P 1 P J403-1 J403 CLP-SAMTEC-12PIN 1 POT 10K VR401 SMT-POT 1 R 8.2K R418 1 R 825 R422 1 R 10K R430 15-Jan-01 16:38 Page 3 Bill of Materials 770645PC.S01 TR-800 PARTS LIST RECEIVER BOARD Quan Type Value Ref Designators PATTERN ==================================================================== ==== 1 R ? R431 BE-0603 1 RES03 82 R301 BE-0603 1 RES03 220 R302 BE-0603 1 RES03 15K R303 BE-0603 2 RES03 51 R401,R402 SMT0603 1 RES03 18K R403 BE-0603 1 RES03 47K R404 BE-0603 1 RES03 270 R405 BE-0603 1 RES03 180 R406 BE-0603 1 RES03 2.7K R407 SMT0603 1 RES03 470 R408 SMT0603 2 RES03 15…

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TR-800 Tune-Up Info 1. Connect battery contacts to 9vdc. 2. Couple transmit antenna into frequency counter and deviation meter. 3. Set mode switch to push to talk and mic gain to maximum. 4. Rotate volume control to turn unit on. Press TALK button once so that TALK LED is on. 5. Feed 1kHz into pins 1(ground) and 2(hot) of headset connector. Increase level until BAT/OM LED lights(about 8 mv). Adjust VR801 for +/- 40kHz deviation. 6. Adjust VC901 for correct frequency.

3.92K R60 TP25 J2-9 J2-7 J2-5 J2-3 J2-1 J2-2 J2-4 J2-6 J2-8 J2-10 J2-12 J5-4 J5-6 J5-12 J5-11 J5-9 J5-7 J5-5 R47 47.5K .001UF C14 J3-2 J8-1 J8-2 U2:D SA575 17 18 19 SA575 U2:B 3 2 1 .015UF C24 R23 267K C28 .0015UF R26 976K C27 .015UF R25 182K R24 976K C25 .015UF C26 .0015UF TP11 TP10 C17 2.2UF + U11 7SZ66 12 4 53 1UF C40 + R38 56.2K R39 10K 15K R59 1.5K R58 390PF C56 200K R57 TLV2362 U10:A 4 3 2 1 TMPD4148 D3 .1UF C54 332K R56 10K VR2 22.1K R55 976K R54 LM393 U7:A 4 2 3 1 R61 10K MMBT3904 Q4 J6-7 J6-6 J6-2 J4-1 J4-2 J4-3 J4-4 J4-5 J4-6 J4-7 J4-8 J4-9 J4-10 J3-13 J7-8 J7-7 J7-6 J7-5 J7-4 J7-3 J7-2 J7-1 TP13 10UF C35 + LP2951 U5 GND 4 ADJ 76 5V 8 INOUT 1 2 SENS U6 LP2951 SENS 2 1 OUTIN 8 5V 67 ADJ 4 GND 47.5K R33 182K R32 C37 .01UF C34 10UF + C38 10UF + R37 10K R36 100K 1UF C39 + R35 10K R34 10K TP22 TP23 TP14TP15 TP20 TP21 J3-6 J5-2 J5-1 J5-3 J3-1 J3-3 J3-4 J3-5 J3-7 J3-8 J3-9 J3-10 TP19 TP18TP17TP16 .1UF C36 MTSF2P02 Q5 FL1 EXCCET220U J1-1 J1-2 TP8 1UF C19 + TP5 TP7TP6 TP4 TP3 TP2 TP1 R17 26.7K 33.2K R16 .022UF C12 C15 .47UF + 2.21K R7 R6 100K 1UF C5 + 100PF C4 Q2 MMBT3904 R4 182K 10UF C3 + R3 26.7K R2 18.2K D1 TMPD4148 100PF C2 R1 1K Q1 MMBT3906 10UF C1 + C7 2.2UF + 100PF C6 FB4 FB3 FB2 FB1 10UF C16 + SA575 U2:A 9 4 7 6 3.9K 10K10K G 5 10 2.2UF C18 + SA575 U2:C 16 11 1413 15 8 1220 G 10K 3.9K 10K L1 270NH 10K R13 47.5K R11 150K R10 1K R9 47.5K R8 .1UF C8 100K R5 E4 E1 E3 E2 100PF C9 10UF C10 + U1 TLV2361 1 3 4 2 5 C11 100PF LM393 U9:B 6 5 8 7 LM393 U9:A 4 3 2 1 R45 10K R48 30.1K 1UF C49 + R46 10K 1UF C20 + R18 47.5K 56.2K R20 C22 1UF + 100PF C30 R28 56.2K .0015UF C23 10K R21 U4:B SA575 2 1 3 R29 2.37K R30 4.99K R31 7.5K C31 .01UF C32 .01UF C33 .001UF U4:D SA575 19 18 17 SA575 U4:A 9 4 6 7 8105 20 3.9K 10K10K G 270NH L2 10UF C21 + MMBT3904 Q3 TP12 TP9 TP28 TP27 TP26 E7 E6 E5 33.2K R50 .1UF C51 TP29 E8 .1UF C52 75K R51 C42 1UF + 24.3K R40 U4:C SA575 14 13 16 11 12 15 G 10K 10K 3.9K 100PF C43 .1UF C44 C57 1UF + R41 3.01K 2.2UF C45 + 10 R44 10 R43 100PF C48 100PF C47 75K R42 100PF C46 MC34119 U8 1 72 5 8 6 4 3 C41 2.2UF + TP24 TP30 R53 332 LO BAT/PEAK DS2 10K VR1:A VR1:B POWER .0018UF C53 TLV2362 U10:B 6 5 8 7 R19 100K R52 332 TALK DS1 LM393 U7:B 5 6 8 7 J6-5 J6-4 J6-3 J6-1 J3-15 J3-14 24AA64 U12 4 586 100K R62 100K R63 R22 562K LM393 U3:A 4 2 3 1 10K R15 LM393 U3:B 6 5 8 7 3.32K R14 10UF C13 + C50 1UF + 100PF C55 10K R12 BAV70 D2 39.2K R49 TJY12/12/00VALUE CHANGES, DELETED PARTS AND ADDED TEST POINT 25PC TJY11/13/00REVISED CHANGES FROM 11/09/00 AND ONPB WTA FLASH SA IC CH 1. REFERENCE TO BOARD 750497. IC LED TALK GND 4 MHZ REF PLL CLOCK PLL DATA IC LED RCV PLL STROBE XMIT PLL STROBE PLL LD PA GATE TONE RSSI RESET CONNECTOR PROGRAM RESET RB3 RB6 RB7 PLL CLOCK PLL DATA 5V GND BOARD SWITCH BOARD VCO GATE BOARD SWITCH BAT AF IN GND PLL LD PLL STROBE PLL CLOCK PLL DATA 4 MHZ REF PA GATE VCO GATE TRANSMIT BOARD XMIT PWR GND GND 4 MHZ REF PLL CLOCK PLL DATA 6V 6V RSSI RECEIVE BOARD PLL STROBE AF OUT TOP PANEL BAT 5V AUDIO GATE TALK GND GAIN POT GAIN POT BAT HEADSET 1 OF 1 TR-800 AUDIO BOARD 770643 770643 VOLUME 8/12/99 R. BASINE WTA FLASH SA 5V IC CH D SHT REV STATUS REV SHEET 4321 = .050 IN = .030 IN = .010 IN DESCRIPTIONQTY PART NO hy-gain O RO R TELEX TELEX COMMUNICATIONS INC. Lincoln Nebraska U.S.A This drawing, written description or specification represents a proprietary product of TELEX, Lincoln, NE., and shall not be released, disclosed, nor duplicated without the written permission of TELEX. NEXT ASSY. USED ON ITEM PROD APPD. CHK BY DR BY DATE SHEET SIZE TITLE MATERIAL: DESIGNATOR DWG.NO. 57010 CODE IDENT SCALE APPLICATIONS ANGLES 1 : BENDS 2 STRAIGHTNESS AND/OR FLATNESS .005 IN./1 IN. CONCENTRICITY .010 TIR UNMARKED ANGLES, BENDS o AND INTERSECTIONS 90 THREADS- EXT. CLASS 2A INT. CLASS 2B - + + + - - oo + - + 64 FINISH: MACHINED - FRACTION: .XXX .XX .X DECIMAL: UNSPECIFIED LIMITS OF TOLERANCE APPDDATECHG NOLTRDESCRIPTION REVISIONS NOTES: R822 26.7 J801-10 J801-3 J801-6 J801-4 J801-1 J801-2 J801-5 J801-7 J801-8 J801-12 J801-9 MMUN2212 Q807 22K 22K MMUN2112 Q806 22K 22K HY801 102 14 E801 BAV99 D801 R802 22.1K R803 221K 10PF C811 .001UF C818 .27UH L803 150 R817 100 R823 Q802 VP0610 R804 3.92K 100 VR801 C805 .1UF C808 .001UF R807 475 4.7UF C809 + C804 .001UF U802 TRF2050 3 2 1 8 18 13 5 6 7 14 201915 10 12 1716 4 C806 .1UF C807 .1UF R811 221 L801 .27UH 5.6PF C813 .001UF C819 .001UF C817 .001UF C827 MMBT3906 Q805 MMBT3906 Q809 .001UF C828 3.9PF C833 100PF C834 3.3PF C832 8NH L810 1PF C831 22NH L809 3.3PF C826 4.75K R824 .27UH L808 .27UH L807 100PF C829 .001UF C830 BFG540X Q810 10 R825 .001UF C825 22NH L806 R812 47.5 C814 .001UF Q803 BFG540X L802 .27UH R814 100 R813 22.1K C815 3.9PF Q804 BFG540X C823 .001UF C822 100PF C816 12PF R815 22.1 R816 6.81K .001UF C821 .27UH L804 8NH L805 1.5PF C820 C824 3.3PF R819 10 R820 10K Q808 BFG540X 10K R821 TC55RP500 U801 OUTIN GND C801 1UF + 1UF C802 + C803 .001UF R801 10K 10UF C812 + R810 47.5 TP801 TP803 TP804 TP810 TP811 TP802 TP805 TP809TP808 TP807TP806 TP812 TP814 R809 100K C810 .001UF R808 4.75K TP813 C835 .1UF TJY11/28/00PRE-RELEASE PRE-RELEASE PC 770644 770644 XMIT PWR TR700 TRANSMIT BOARD R. BASINE 7/12/00 PA GATE VCO GATE GND BAT AF IN PLL DATA PLL CLOCK PLL LD PLL STROBE 4 MHZ REF PB10/20/00DN Lincoln Nebraska U.S.A TELEX COMMUNICATIONS INC. TELEX R OR O hy-gain nor duplicated without the written permission of Lincoln, NE., and shall not be released, disclosed, represents a proprietary product of TELEX, This drawing, written description or specification TELEX APPDDATEDESCRIPTION REVISIONS LTRCHG.NO. USED ONNEXT ASSY. APPLICATIONS 64FINISH: MACHINED INT. CLASS 2B THREADS- EXT. CLASS 2A O AND INTERSECTIONS 90 UNMARKED ANGLES, BENDS STRAIGHTNESS AND/OR FLATNESS .005 IN./1 IN. CONCENTRICITY .010 TIR OO -- ++ ANGLES 1 , BENDS 2 - - - + + + = .030 IN = .050 IN .XXX .X .XX FRACTION:DECIMAL: UNSPECIFIED LIMITS OF TOLERANCE DESCRIPTIONITEMPART NO. DATE DR BY CHK BY APPD. PROD. MATERIAL: SPECIFICATION TITLE 57010 C SIZECODE IDENTDWG. NO. SCALE: SHEET: = .010…

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FCC ID: B5DM515 MFA p0110002, d0110037 Date of Report: January 23, 2001 Date of Submission: January 30, 2001 Federal Communications Commission Via: Electronic Filing Attention: Authorization & Evaluation Division Applicant: Telex Communications, Inc. Equipment: TR-800 FCC ID: B5DM515 FCC Rules: 74H Gentlemen: On behalf of the Applicant, enclosed please find Application Form 731, Engineering Test Report and all pertinent documentation, the whole for approval of the referenced equipment as shown. Filing fees are attached. We trust the same is in order. Should you need any further information, kindly contact the writer who is authorized to act as agent. Sincerely yours, Morton Flom, P. Eng. enclosure(s) cc: Applicant MF/cvr FCC ID: B5DM515 MFA p0110002, d0110037 LIST OF EXHIBITS (FCCCERTIFICATION(TRANSMITTERS) - REVISED 9/28/98) APPLICANT: Telex Communications, Inc. FCC ID: B5DM515 BY APPLICANT: 1. LETTER OF AUTHORIZATION 2. IDENTIFICATION DRAWINGS, 2.1033(c)(11) LABEL LOCATION OF LABEL COMPLIANCE STATEMENT LOCATION OF COMPLIANCE STATEMENT 3. PHOTOGRAPHS, 2.1033(c)(12) 4. DOCUMENTATION: 2.1033(c) (3) USER MANUAL (9) TUNE UP INFO (10) SCHEMATIC DIAGRAM (10) CIRCUIT DESCRIPTION BLOCK DIAGRAM PARTS LIST ACTIVE DEVICES 5. PART 90.203(e) & (g) ATTESTATION BY M.F.A. INC. A. TESTIMONIAL & STATEMENT OF CERTIFICATION B. STATEMENT OF QUALIFICATIONS FCC ID: B5DM515 MFA p0110002, d0110037 TRANSMITTER CERTIFICATION of FCC ID: B5DM515 MODEL: TR-800 to FEDERAL COMMUNICATIONS COMMISSION Rule Part(s) 74H DATE OF REPORT: January 23, 2001 ON THE BEHALF OF THE APPLICANT: Telex Communications, Inc. AT THE REQUEST OF : P.O. UPS 1/4/01 Telex Communications, Inc. 8601 E. Cornhusker Highway P.O. Box 5579 Lincoln, NE 68505-5579 Attention of: Charles E. Conner, Project Engineer (402) 467-5321; FAX: -3279 E-mail: [email protected] SUPERVISED BY: Morton Flom, P. Eng. FCC ID: B5DM515 MFA p0110002, d0110037 THE APPLICANT HAS BEEN CAUTIONED AS TO THE FOLLOWING: 15.21 INFORMATION TO USER. The users manual or instruction manual for an intentional radiator shall caution the user that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 15.27(a) SPECIAL ACCESSORIES. Equipment marketed to a consumer must be capable of complying with the necessary regulations in the configuration in which the equipment is marketed. Where special accessories, such as shielded cables and/or special connectors are required to enable an unintentional or intentional radiator to comply with the emission limits in this part, the equipment must be marketed with, i.e. shipped and sold with, those special accessories. However, in lieu of shipping or packaging the special accessories with the unintentional or intentional radiator, the responsible party may employ other methods of ensuring that the special accessories are provided to the consumer, without additional charge. Information detailing any alternative method used to supply the special accessories for a grant of equipment authorization or retained in the verification records, as appropriate. The party responsible for the equipment, as detailed in § 2.909 of this chapter, shall ensure that these special accessories are provided with the equipment. The instruction manual for such devices shall include appropriate instructions on the first page of text concerned with the installation of the device that these special accessories must be used with the device. It is the responsibility of the user to use the needed special accessories supplied with the equipment. FCC ID: B5DM515 MFA p0110002, d0110037 TABLE OF CONTENTS RULEDESCRIPTIONPAGE . Test Report 1 2.1033(c) General Information Required 2 2.1033(c)(14) Rule Summary 5 . Standard Test Conditions and Engineering Practices 6 2.1046(a) Carrier Output Power (Conducted) 7 2.1046(a). Carrier Output Power (Radiated) 9 2.1051 Unwanted Emissions (Transmitter Conducted) 11 2.1053(a) Field Strength of Spurious Radiation 14 2.1049(c)(1) Emission Masks (Occupied Bandwidth) 18 2.1047(a) Audio Frequency Response 26 2.1047(b) Modulation Limiting 28 2.1055(a)(1) Frequency Stability (Temperature Variation) 30 2.1055(b)(1) Frequency Stability (Voltage Variation) 33 2.202(g) Necessary Bandwidth and Emission Bandwidth 34 FCC ID: B5DM515 MFA p0110002, d0110037 PAGE NO.1of34. Required information per ISO/IEC Guide 25-1990, paragraph 13.2: a) TEST REPORT b) Laboratory: (FCC: 31040/SIT) (Canada: IC 2044) M. Flom Associates, Inc. 3356 N. San Marcos Place, Suite 107 Chandler, AZ 85224 c) Report Number: d0110037 d) Client: Telex Communications, Inc. 8601 E. Cornhusker Highway P.O. Box 5579 Lincoln, NE 68505-5579 e) Identification: TR-800 FCC ID: B5DM515 Description: UHF FM Portable Transceiver f) EUT Condition: Not required unless specified in individual tests. g) Report Date: January 23, 2001 EUT Received: January 4, 2001 h, j, k): As indicated in individual tests. i) Sampling method: No sampling procedure used. l) Uncertainty: In accordance with MFA internal quality manual. m) Supervised by: Morton Flom, P. Eng. n) Results: The results presented in this report relate only to the item tested. o) Reproduction: This report must not be reproduced, except in full, without written permission from this laboratory. FCC ID: B5DM515 MFA p0110002, d0110037 PAGE NO.2of34. LIST OF GENERAL INFORMATION REQUIRED FOR CERTIFICATION IN ACCORDANCE WITH FCC RULES AND REGULATIONS, VOLUME II, PART 2 AND TO 74H Sub-part 2.1033 (c)(1): NAME AND ADDRESS OF APPLICANT: Telex Communications, Inc. 8601 E. Cornhusker Highway P.O. Box 5579 Lincoln, NE 68505-5579 MANUFACTURER: Applicant (c)(2): FCC ID: B5DM515 MODEL NO: TR-800 (c)(3): INSTRUCTION MANUAL(S): PLEASE SEE ATTACHED EXHIBITS (c)(4): TYPE OF EMISSION: 91K0F3E (c)(5): FREQUENCY RANGE, MHz : 614 to 746 (c)(6): POWER RATING, Watts: 0.050 Switchable Variable x N/A FCC GRANT NOTE: (c)(7): MAXIMUM POWER RATING, Watts: 0.250 DUT DESCRIPTION : This unit pass…

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