Tune Up etc

FCC ID: AZPT2PG-75

Parts List/Tune Up Info

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FCCID_139186

Page 1—13 FPCC APPLICATION DATA Dec.2000 DURATRAX: 75.710MHz Futaba Corporation CHECK. CHECK. DESIGN

Page 2—13 A P P L I CAT I ON DAT A DURATRAX GENERAL INFORMAT 1 ON NAME OF APPL I CAT I ON F ut a ba C o r por a t i o n. ADDRESS OF APPL 1 CANT 6 2 9 O s h i ba Mo ba ra Ci ty Ch i b a J APAN NAME OF MANUFACTURER F ut a ba C o r pora t i o n. ADDRES S OF MANUFACTURER 6 2 9 O s h i ba Mo ba ra C i ty Ch i b a J AP AN I DENT I F 1 CAT ION OF EQU I PMENT AZP T2 PG— 7 5 I NFORMAT I ON ON PRODUCT ION QUANT I TY Yes, More t han one. . TECHN J CAL DATA S e e P age Afotoer 3~ . 1 DENT I F 1 CAT 1 ON LABEL S e e — P HOT OGRAPHS S e e —

Page 3—13 D. TECHN ICAL DESCR I PT 1 ON—TRANSMITTER. 1. TYPE OF EMISS 1 ON 1D. 2. FREQUENCY RANGE a. T un i ng Range. 7 5~7 6 MH :. b. Ex t e rna l ly se l e c t a ble channe ls. NON E. 3. V AR IABLE OUTPUT POWER Ou t pu t powe r is f oi xo e d. 4. MAX I MUM OUTPUT POWER 2 9 9 mW. ATTACHED DUMMY LOAD 390 30pF | L. 620 20dB ATTIENATION 1x Ant | W odt 419 50 Q 360 68 62 METHOD OF STOP MODURAT I ON Attach a resistor 4.7KOHM between No.18 and No.19 of FP2108T. 5. F I NAL RF STAGE TEST RESULTS: (R) (V) (P) Dummy Load RF Voltage |_ Calculated Out—putpower_ | [OHM] [r.m.s] [mW] [dBm] 47 3.75 299 _i 248 Fina!l 0.C. Input | A [ ! | 1K 2. Tu U | L___80. (ma) | P _: 1080 (mW) 2804272 . |v : 120

Page 4—13 6. FUNCT 1 ON OF EACH ACTIVE DEV I CE : Q 1 (28C3172) ; Buffer & Driver. @2 (28C4272F) _ ; Final stage R.F.Amplifier. IC1___(FP2108T) ; Encoder Voltage Stabilizer Wave Form Shaper. TUNE—UP AL IGNMENT PROCEDURE : DAdjust L3.L4.L6 and L7 for maximum power output. @Turn the core of L2 c.w. until oscillation stops. @Then turn L2 c.c.w. to the point where the oscillation just starts and then it 1 turn c.c.w. @Again adjust L3.L4.L6 and L7 for maximum output. $)Turn the core of L7 c.w. to 1/4. FREQUENCY S TAB I L 1 Z ING C I RCU ITRY : IC1(FP2108T) ; Internal voltage regulator. X‘ t a 1 : Stabilizes oscillating frequency. C 1 (CH3p) ;Temperature compensated capacitors. C 4 (CH33p) ; Temperature compensated capacitors. 9, ADDIT IONAL C IRCUIT DESCR I| PT 1 ON a . T y pe o f o s ce oi l a t o r c i rcu i t u t i l i ze d. Mo d i f i e d C o l pi t t s O s c i l l a t o r. b. Suppre s sor o fos pur i ou s ra d i a t i o n f r om An t enn a. L 6.L 7 (MTD3—005) _ C 20 (CHA4Tp) i0 C 21 (CH15p) i > Low Pass Filter Modification x . C 23 (CH68p) C 25 (CH15p) 10 2 c. S uppres s or o fos pur i ou s ra d i a t i o n f rom o t her o f An t enna. No n e . d. Mo d ul a t i on Li mi t t e r N o n e .

Page 5—13 e. Au d io Low Pas s Fi l t e r IC1 FP2108T C32 15n(M) f. Ou t pu t L imict t er N o n e . 1 0. DI1IGITAL MODULAT I ON N o n e . 1 1. PHASE LOCKED LOOP N o n e .


Document Created: 2001-02-06 16:00:02
Document Modified: 2001-02-06 16:00:02
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