Radio Shack TRC-237 manual

OWNER’S MANUAL Ca t. N o. 2 1-1 650 TRC-237 40-C hannel 5-Watt CB Walkie Talkie with Chann el 9/19 P riorit y Switc h Ple ase re ad be fo re usin g t hi s eq ui pm ent . 21-1 650. fm Page 1 Thursda y, Au gust 5, 1999 11: 43 AM[...]

2 FEATURES Your Rad ioS ha ck TRC -23 7 4 0-Cha nn el 5- Watt CB Walkie Talkie with Cha nnel 9/19 Priority Switc h is a portab le, two-wa y radio you ca n c arry alm ost anyw her e. T he cha n- nel priority switch lets you quickly switch to ei the r Ch anne l 9 to repo rt emer genc y si t u- at i ons , or t o Chan ne l 1 9 t o t r ansm i t an d r e[...]

3 2-Digit LED Displ ay — let s you easily see the sel ected chann el numbe r. Automatic Noise Li miter ( ANL) Cir cuit — reduces noise caused by nearby elec - tri cal equip m e nt such as motor s or auto- motive i gnition sy stems. Batter y Test But ton and Batt ery In dica- tor — let s you che ck the batt eries’ co ndi- tion t o fi nd out [...]

4 FCC INFORMATION The Federal Communic ations Co mmis- sion (FCC) does n ot require y ou to have a license to oper ate this walkie tal kie. However , the FCC does requi re that yo u read and know Part 95 of FCC Rules . These r ules appl y to the opera tion of a Class D CB. We have provi ded a copy of these regul atio ns wit h your T RC-237 . Int er[...]

5 CONTEN TS Po we rin g t h e C B ..... ... .. ..... .. ... ..... .. .. ... 6 Using the POWER Jack and ALKA LI N E/N I-C D Sw itc h . ..... .. ... .... ... 6 Usi ng Ba tte rie s .... .. ..... .. ... ..... .. ... .... ... 7 T est ing th e B at tery Po we r ..... .. .. . 10 Recharg ing Ni ckel-Cadmi um Ba tter ie s .. ..... ... .. ..... .. ... ..... [...]

6 POWERING THE CB You can power your TRC-237 from any of these s ourc es (none suppli ed): • Eight AA alkali ne batteri es with the two suppl ied dummy batt er ies • T en rechar geable AA nickel - cadm iu m batte ries • 12-vo lt vehicl e batt ery power us ing a fused power cor d • Standa rd AC power using a power suppl y USING THE POWER JAC[...]

7 •S e t i t t o ALKALINE b ef or e y o u c on- nect a n exter nal power source (vehi - cle bat tery power or AC adapte r) to th e POW ER jac k or whil e you ar e us- ing i nternal batt eries ( alkali ne or re- chargeab le). •S e t i t t o NI - CD only when you con- nect a batt ery cha r ge r to the POW ER jack t o charge the in sta lled re ch [...]

8 Cautions : • A lwa ys use f resh, o r f reshl y cha rged, batter ies o f the re quired size and recomm ended t ype. • Do not mix o ld and ne w batteries, different types of batteries (st an- dard , alkaline, or recharge able nicke l-cadmium ), or rec hargeable batter i es of diff erent cap aci ties. Follo w these steps to ins tall the bat t e[...]

9 4. Be sure A LKALINE /NI - CD insi de the ba tt ery co mp artm ent is s et to ALKA- LIN E . 5. Put eigh t AA alkalin e batterie s and the two supp lied dummy bat te ries, or ten AA nicke l-cadmium bat ter i es into the batt ery compartment , as indi- cated by t he polar i t y symbols ( + and –) marked in side. Note : Bef ore yo u use the TRC -2[...]

10 T e sting the Batt ery Power 1. Tur n on th e TR C -2 3 7 by r ot at i ng OFF/ VOLUM E c lo ckwis e u ntil it c l ick s. 2. Hold down BA T T TEST . If th e ind ica - tor lights, there i s enoug h batt ery power t o opera te the CB. If the indi- cator is dim or does not l ig ht, replac e or recharg e the batteri es. Recharging Nickel- Cadmium Bat[...]

11 Foll ow t hese step s to char ge ni ckel- cadmium batter ies in the T RC-237. 1. If t he TRC-237 is on, tu rn OFF/VOLUME fu ll y co unterc lockwi se unti l it cl icks t o tur n it o ff. 2. Set A LKA LI N E/ NI - CD insi de the bat - tery c ompartment to NI - CD (see “ Us - ing th e Power Jack and ALKALINE/ NI-CD Swit ch” on Page 6) . 3. Conn[...]

12 Note: You can use a n e xterna l ch arge r (su ch as Cat. No. 23-1 34, not sup- plied ) to rec harg e the nick el- c a dm iu m batt eries. Af ter rem oving the bat teries from t he TRC-237, fol low the i nstructions that come wi th t he extern al ch arger. Importa nt : You r TR C -237 i s capab le of us ing nicke l-cad m ium bat te ries. At the [...]

13 • Wh en you finish usi ng the TRC-237, unplug the f used c ord from the c iga- rett e-light er socket before you dis- connect it f rom your TRC-237 . 1. If t he TRC-237 i s on, t u rn OFF/VOL- UME full y co unt erc lo ckwi se u nt il it clic ks to t urn i t o f f. 2. Be sure A LKALINE /NI - CD insi de the ba tt ery co mp artm ent is s et to AL[...]

14 Cauti ons: • The powe r suppl y must be able to deli ver 12 vol ts and at leas t 1200 mil- li amps of power . The recom mended power supp ly meet s these specif ica- ti ons. Using a power sup ply that does not meet th ese speci ficati ons coul d dama ge the TRC-237 or th e power supp ly . • Y ou must use a DC f us ed cord that suppl ies 12 v[...]

15 Note: I f the TRC- 237 does not op er ate when you us e the DC f used cord, turn the power su ppl y off , unpl ug th e co rd fr om the power suppl y’s power sock et, th en clean any debris from the socket . I f your TRC- 237 sti ll does not wor k, check the f use in the DC fuse d cord and r epl ace it if neces - sary. CONNECTING THE ANTENNA Ca[...]

16 Connecting an Optional Antenna Yo ur w alk ie ta lkie co me s wi th a flex ib le anten na that is ide al for most appl icatio ns. However , the walkie talki e’s antenna j ack mak es it easy to co nnect ot her t ypes of anten nas, too. For mobile or base stat ion use, you mi ght want to con nect an opti on- al ext ernal antenn a. Your local Ra-[...]

17 Follo w the i nstal lation i nstru ction s sup- plied with the antenna , route t he ante nna cable t o the TRC-237, then co nnect i t to the an tenna jack. Cautions : • D o not run t he cable over sharp edges or movi ng parts. • D o not run the cable ne xt to power cables or o ther CB antenna c ables. • D o not r un the cab le throu gh a v[...]

18 OPERATION Bef ore y ou us e y ou r TR C -23 7, we r e com - mend yo u read “ CB Op erat ion Tip s” o n Page 21 , w hich c on tains in fo rma tio n t o he l p y ou us e i t ef f ect iv el y a nd co urt eou sl y. RECEIVING T RANSM ISSIONS AN D ADJUSTI NG SQUEL CH 1. If you did not connec t an exter nal anten na, hol d the TRC-237 so the anten [...]

19 T o redisp lay the c hannel number fo r about 20 sec onds, si mply pres s and releas e D ISPLA Y . 4. If yo u set OUT – CH9 – CH19 to OUT , repeat edly pr ess CH s to s el ect higher channel s, o r CH t t o s ele ct lower ch annels. T o move rapi dly throug h the ch annels, hol d down CH s or t. 5. Adjust OFF/ VOLUM E to a comfortabl e list [...]

20 Note : Do n ot tu rn SQ UELCH too far cloc kwise beca use you might als o cut out weak si gnals. 7. T o t urn off the TRC-237, tu rn OFF/ VOLUME tow a rd OFF u n t il it cl ic k s. T RANSM ITTING 1. Follow Steps 1–6 in “Receivin g T ransm issions and Adj ustin g Squelc h” on Page 18 . 2. Hold the TRC-237 2 to 3 inc hes from your mouth . Pr[...]

21 CB OPERATION TI PS The fol lowing t ips wil l help yo u get t he most en joyment from your T RC-237. COMMON USES F OR A CB RADIO Business Uses • T ruck dr ive rs and d elive ry per sonnel can lear n road and traf fi c conditi ons and get as sista nce in locat ing dest i- na ti ons. A wa lkie talk ie i s als o go od compan y on t hose “l ong [...]

22 • Campi ng, fi shing, and other sports are mor e fun wi th a walkie talkie. Locat e a friend or fi nd out “what ’s cooki ng” ba ck at camp. USING COMM ON 10-C ODES Citi zen’s band o perator s have larg ely adopt ed the 10-cod es for s tandar d ques- ti ons an d answers. Their use pe rmits fast- er c ommunicat ion an d better int elligi[...]

23 Note : Although thi s table lists th e 10- codes’ mean ings in the fo rm of a state - ment, t hey can a lso be p hrased as ques - tions (10-6 : Are you bus y?, 10- 20: W hat i s your l ocation? ). 10- 15 Messa ge d eli vere d. 10- 16 Rep ly t o m ess age. 10-17 En ro ute. 10-18 Urg ent. 10- 19 Con tact ____ ____ __. 10- 20 My loc atio n is __ [...]

24 CB COURTESY • W ait f or a pause i n someone else’s tra nsmissi on before you ask for a break . • If you do not r eceive an answer to your ca ll after a se cond at tempt, sig n of f and wa it se veral minu tes befor e try ing ag ai n. • Do no t press and hold PUSH T O TA L K when you are not ta lking. (T hi s is c alle d dead keying .) ?[...]

25 T ROUBLE SHOOTI NG If you r TRC-237 is n ot working a s it should, follow thes e suggestions to see if you can el iminat e the p roblem. If you can - not, take it t o your l ocal RadioSha ck stor e for assi st ance. Symptom S uggestion Weak , bad, or no recep- tion. Be sure the TRC- 237 is t urned on. Be sure the vol u m e i s tu rned up. Be sur[...]

26 MAINTENANCE Your Radi oShack TRC- 237 40-Channel 5-W at t C B Wal kie Ta lkie with Channel 9/ 19 Pri ority Swi tch is a n example o f supe- rio r desi gn a nd craf tsmanshi p. The fo llow- ing su ggest ions wi ll help you care for your TRC-237 so you can e njoy it for years . Keep the TRC-237 dr y. If it gets wet, wipe it dry i mmedi- ately . Li[...]

27 SPECIFIC ATIONS Receiv er F req uenc y Cov e rag e .. . 26 .9 65 – 27.405 MHz Sens iti vity (Max. ) ... .. 0.5 µ V at 1 0 dB (S+N)/N Adja c ent Ch an nel R eje ctio n ... ... ........ ... 45 d B Squ elc h ... .... .... . Ad justa bl e from 1 µ V to 1 m V Aud io Outp ut (10% THD) ....... ... .... ... 40 0 mW Cu rre nt Drai n ... .... ... ....[...]

RadioShack A Divisi on of T andy Corpora tion Fo rt Wo rth, T exas 76102 81 108096 0B 4A 8 Pr int ed in C h ina Lim it ed Nine ty-Day W arrant y This pr oduct is warra nted b y RadioSha ck a g ainst m anu- factur in g defects in mat erial and wor kmansh ip under no r- mal use fo r ninet y (90 ) d a y s from t he date of purchas e from RadioSh ack c[...]