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Ramsey Electronics RRW1A - page 1
RRW1A • 1 Ramsey Electr onics Model N o. RR W1A Have you ever been fr ustrated wi th the rang e of your r emote controls? Tir ed of havi ng to bounc e your IR r emote off of ceilings an d walls? D o you want to run y our system from another r oom or floor ? H ere is the ans wer to your prayer s! Extend the r ange of y our rem ote controls through ...
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Ramsey Electronics RRW1A - page 2
RRW1A • 2 RAMSEY TRANSMITTER KITS • FM100B Professio nal FM Ster eo Transmitter • FM25B Sy nthesized Stereo FM Tr ansmitter • MR6 Model Roc ket Tracking Transmitter • TV6 Television Trans mitter RAMSEY RECEIVER KITS • FR1 FM Broad cast Receive r • AR1 Air craft Band Receiver • SR2 Shortwave Rec eiver • SC1 Shortwave Conv erter RAM ...
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Ramsey Electronics RRW1A - page 3
RRW1A • 3 RR W1A WIRELESS REMOTE REPEA TER KIT (T ransmitter) Rams ey Publicat ion No. MRRW 1A Pri ce $5 .00 TABLE OF CONTENTS Introduct ion ............................................ 4 Circuit T heor y ........................................ 5 Learn As You Bu ild ............................... 7 Parts List ................................... ...
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Ramsey Electronics RRW1A - page 4
RRW1A • 4 RRW1 A INTRODUCT ION W elcome to the RRW 1A kit (and if you don’t have t he tim e, the wired a nd tested ver sion). L et’s tak e a m oment to help you under stand the b asic work ings of IR rem ote contr ols and h ow the RRW 1 pair works . This will bet ter help you understa nd what you are about to build. As sim ple as it m ay look ...
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Ramsey Electronics RRW1A - page 5
RRW1A • 5 RRW1 P A IR T HEORY OF OPER A TION The RRW 1A (tr ansmitter b oard) m ay look quite sim ple but t here is ac tuall y quite a lot being done ins ide eac h one of the parts . Man y individ ual com po- nents are packed ins ide of the IR recei ver part ( U2) itself ; so m any in fact th at if it was built u p with dis crete c om ponents, it ...
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Ramsey Electronics RRW1A - page 6
RRW1A • 6 W hen the IR detector on the RRW 1A ( transm itter board) “ sees” a 38 k Hz IR signal, t he output of the det ector goes low (it is invert ed). W hen there is no 38 kHz signal present th e output i dles hig h. On the output of the IR detect or you won’t see t he 38 k Hz, just the d ata that the 38 k Hz represents from your IR rem ...
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Ramsey Electronics RRW1A - page 7
RRW1A • 7 RAMSEY “LE ARN-AS-YOU-BUILD” A SSEM BLY STR A TEGY Be sure to read thr ough all of the steps and ch eck the boxes as you go to be sure you didn't m iss an y important ones . Althoug h you m ay be in a h urry to see the end res ults, b efore you switch on the power be sure to c heck all wiring and components (espec iall y capaci ...
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Ramsey Electronics RRW1A - page 8
RRW1A • 8 This project will no t work as well as you m ay wish if you just s lap it toge ther without f ollowing go od ass embl y tec hniques and all of the inst ructions . No matter how clear we ma y th ink our manual is , if you have an y questio ns give us a call at the factor y instead of j umping to co nclusions . W e will be happ y to help ...
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Ramsey Electronics RRW1A - page 9
RRW1A • 9 PARTS SU PPLIED WIT H YOUR RRW1 A (TRANSMITT ER) KIT Capacitors 1 2.2 pF cer am ic capacitor (mark ed 2.2) [C7] 1 8.2 pF cer am ic capacitor (mark ed 8.2) [C8] 3 47 pF cer amic capacitor s (m arked 47) [C1,4,6 ] 1 0.001 uF ceram ic capacitor (mark ed .001 or 10 2 or 1 n F) [C3] 1 0.01 uF ceram ic capacitor (m arked . ...
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Ramsey Electronics RRW1A - page 10
RRW1A • 10 ASSE M BLY OF THE RRW1A Assem bly of the RRW 1A is straight f orward bu t it do es requir e som e time and patienc e. T o get our be arings, we will start b y mountin g the po wer jack and move o n from there. It serves as a good ref erence poi nt for the other parts. 1. Install J 1, the 2.1 m m power jack . Be sure to g et a solid ...
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Ramsey Electronics RRW1A - page 11
RRW1A • 11 10. Instal l R4, a 22 K ohm resistor ( red-red-ora nge). 11. Instal l C4, a 47 pF cera m ic capacitor (m arked 47) . This capacitor works with Q1 to isolate the anten na from the osc illator s ection. T he capacit or value of 47 pF was chosen because it look s lik e a direc t short to gr ound at 433 MH z so an y RF on the bas e ...
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Ramsey Electronics RRW1A - page 12
RRW1A • 12 23. Instal l R8, a 4.7 K ohm resistor ( yellow-violet-r ed). 24. Instal l Q4, a 2N 3904 tra nsistor ( mark ed 3904). T his transistor is us ed to amplif y the sm all am ount of c urrent provid ed from the IR detec tor to a large en ough am ount to dri ve the LED indicat or. The L ED will b link O FF when a sig nal is se en, so ...
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Ramsey Electronics RRW1A - page 13
RRW1A • 13 TEST ING T HE RRW1 A Method #1 To begin testing t he RRW 1A you will nee d the foll owing it em s: AC Power s uppl y between 6 and 12V AC or.. DC power supp ly bet ween 8 and 14 VDC. A known f unctiona l IR rem ote control Apply po wer to J1 an d turn on the po wer switch (S1). T he Data L ED (D1) should turn on and stay on ...
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Ramsey Electronics RRW1A - page 14
RRW1A • 14 Method #2 If you are not luck y enough to have a r adio th at can rec eive 433.4 2 MHz, the next best way to chec k the RRW 1A transm itter is by using an R RW 1B re- ceiver. You just n eed to h ave fait h that you have as sem bled ever ything cor- rectly up t o this po int! It can be ver y diffic ult to trou bleshoot this item without ...
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Ramsey Electronics RRW1A - page 15
RRW1A • 15 USING THE RRW1 There reall y is no secret to using the RRW 1 system. You prim aril y w ant to position the RRW 1B in the stereo c abinet or o n top of your com ponents so the antenna ca n stick up. The RRW1A s hould be p laced so tha t the IR se nsor can see your r emote c ontrol’s IR signal and is in th e location you want your rem ...
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Ramsey Electronics RRW1A - page 16
RRW1A • 16 ...
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Ramsey Electronics RRW1A - page 17
RRW1A • 17 RRW1 A PA RT S LAYOUT DIAGR A M ...
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Ramsey Electronics RRW1A - page 18
RRW1A • 18 TROUBLESHOOTING GUIDE PROBLEM: T he gree n Data LE D does not l ight. SOLUTI ON: 1) T he LED (D 1) m ay be installed back wards. Re-c heck its orien- tation as describe d in the a ssembl y steps. 2) Check pin 3 of U1 for +5V . If you have no po wer here, c heck the wall transf orm er to mak e sure the c enter lug is positiv e and the r ...
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Ramsey Electronics RRW1A - page 19
RRW1A • 19 The Ramsey Kit Warr anty Please read carefully BEFORE c alling or writing in about y our kit. Most proble ms can be solved without contacting the factory. Notice that this is not a " fi ne print" warranty. We want you to understand your rights and ours too ! All Ramsey kits w ill work if assembled properly. The very fa ct tha ...
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Ramsey Electronics RRW1A - page 20
RRW1A • 20 RRW1 A REMOTE REPE ATER KIT Quick Refe rence Page Guid e Introduction ............................................ 4 Theor y of Operation .............................. 5 Parts List ............................................... 9 Assem bly ............................................. 10 Testing ...................................... ...
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