Owner’s manual cat. No. 21-1620 trc-235 2 watt 3-channel cb walkie-talkie please read before using this equipment. 21-1620.Fm page 1 thursday, august 5, 1999 11:16 am.
2 features your radioshack trc-235 2 watt 3- channel cb walkie-talkie is a portable, two-way radio you can carry almost any- where. You can use your trc-235 around the house, in your office, or in your car or boat. You can also use it on fishing and camping trips, or at your business for supervisory...
3 power/charging jack — lets you power your trc-235 from an ac or dc power source, so you can use the trc-235 with- out draining the batteries. And, lets you charge nickel-cadmium batteries without removing them from the trc-235. Note: you need eight aa alkaline batter- ies or ten nickel-cadmium rec...
4 your trc-235 might cause tv or radio interference even when it is operating properly. To determine whether your trc-235 is causing the interference, turn off your trc-235. If the interference goes away, your trc-235 is causing it. Try to eliminate the interference by: • moving your trc-235 away fr...
5 contents powering the cb ................................ 6 using the power jack and alkaline/ni-cd switch................... 6 using batteries ................................. 7 testing the battery power .......... 10 recharging nickel-cadmium batteries ..................................... 10 u...
6 powering the cb you can power your trc-235 from any of these sources: • eight aa alkaline batteries (not sup- plied) with two dummy batteries (supplied) • te n r e ch a rg e a b le a a n ic k e l- cadmium batteries (not supplied) • 12-volt vehicle battery power using a fused power cord (not suppli...
7 • set it to alkaline before you con- nect an external power source (vehi- cle battery power or ac adapter) to the power jack or while you are us- ing internal batteries (alkaline or re- chargeable). • set it to ni – cd only when you are connecting a battery charger in order to charge the installed...
8 cautions: • always use fresh, or freshly charged, batteries of the required size and type. • do not mix old and new batteries, different types of batteries (stan- dard, alkaline, or rechargeable nickel-cadmium), or rechargeable batteries of different capacities. Follow these steps to install the b...
9 4. Be sure alkaline/ni – cd inside the battery compartment is set to alka- line . 5. Put eight aa alkaline batteries and the two supplied dummy batteries, or ten aa nickel-cadmium batteries into the battery compartment, as indi- cated by the polarity symbols (+ and –) marked inside. Note: before y...
10 testing the battery power 1. Turn on the trc-235 by rotating off/volume clockwise until it clicks. 2. Hold down batt test . If the indica- tor lights, there is enough battery power to operate the cb. If the indi- cator is dim or does not light, replace or recharge the batteries. Recharging nickel...
11 follow these steps to charge nickel- cadmium batteries in the trc-235. 1. If the trc-235 is on, turn off/volume fully counterclockwise until it clicks to turn it off. 2. Set alkaline/ni – cd inside the bat- tery compartment to ni – cd (see “us- ing the power jack and alkaline/ni- cd switch” on pa...
12 4. When charging is complete, unplug the battery charger’s plug from the ac outlet. Then, disconnect the bat- tery charger’s barrel plug from the power jack. Note: you can use an external charger (such as cat. No. 23-134, not sup- plied) to recharge the nickel-cadmium batteries. After removing th...
13 • when you finish using the trc-235, unplug the fused cord from the ciga- rette-lighter socket before you dis- connect it from your trc-235. 1. If the trc-235 is on, turn off/vol- ume fully counterclockwise until it clicks to turn it off. 2. Be sure alkaline/ni – cd inside the battery compartment...
14 • to help prevent an electrical short, unplug the adapter from the ac out- let before you unplug the adapter from the trc-235. Follow these steps to connect the trc- 235 to ac power. 1. Connect the adapter’s 5.5 mm outer diameter/2.1 mm inner diameter bar- rel plug to the adapter’s cord, setting ...
15 external antenna your walkie-talkie comes with a telescop- ing antenna that is ideal for most applica- tions. However, the walkie-talkie’s ext antenna jack makes it easy to connect other types of antennas, too. For mobile or base station use, you might want to connect an optional external antenna...
16 • for the best performance when you use an external antenna, do not extend the trc-235’s telescoping antenna. Follow the installation instructions sup- plied with the antenna, route the antenna cable to the trc-235, then connect it to the ext antenna jack. Cautions: • do not run the cable over sh...
17 operation before you use your trc-235, we recom- mend you read “cb operation tips” on page 20, which contains information to help you use it effectively and courteously. Receiving transmissions and adjusting squelch 1. If you did not con- nect an external antenna, fully ex- tend the trc- 235’s te...
18 3. Turn on the trc-235 by turning off/ volume clockwise until you hear a click and a hissing sound. Note: you might not hear a hissing sound if channel is set to b or c and you haven’t installed any crys- tals in channel positions b or c. 4. Adjust off/volume to a comfortable listening level. 5. ...
19 transmitting 1. Follow steps 1–5 in “receiving transmissions and adjusting squelch” on page 17. 2. Hold the trc-235 2 to 3 inches from your mouth. Hold down push to talk on the side of the trc-235 and speak in a normal voice into the microphone. When you finish speaking, release the button. Note:...
20 cb operation tips the following tips will help you get the most enjoyment from your trc-235. Common uses for a cb radio business uses • truck drivers and delivery personnel can learn road and traffic conditions and get assistance in locating desti- nations. A walkie-talkie is also good company on...
21 • camping, fishing, and other sports are more fun with a walkie-talkie. Locate a friend or find out “what’s cooking” back at camp. Using common 10-codes citizen’s band operators have largely adopted the 10-codes for standard ques- tions and answers. Their use permits fast- er communication and be...
22 note: although this table lists the 10- codes’ meanings in the form of a state- ment, they can also be phrased as ques- tions (10-6: are you busy?, 10-20: what is your location?). 10-15 message delivered. 10-16 reply to message. 10-17 en route. 10-18 urgent. 10-19 contact __________. 10-20 my loc...
23 cb courtesy • wait for a pause in someone else’s transmission before you ask for a break. • if you do not receive an answer to your call after a second attempt, sign off and wait several minutes before trying again. • do not hold down push to talk when you are not talking. (this is called dead ke...
24 adding crystals your trc-235 includes two crystals (transmit and receive) installed in channel position a. The crystals let you use the cb on channel 14. You can add two more crystals in channel positions b and c so you can use any two other channels of the 40 allotted to cbs. However, you must u...
25 note: a crystal is marked with its fre- quency. Follow these steps to change or install crystals in your trc-235. 1. If the trc-235 is on, turn off/vol- ume fully counterclockwise until it clicks to turn it off. 2. Remove the batteries (if installed). 16 27.155 26.700 17 27.165 26.710 18 27.175 2...
26 3. Set channel to a , slide your thumb under the right edge of channel , then carefully pull channel up to remove it. 4. Use a phillips screwdriver to remove the back cover’s three screws. Caution: the batt test button might come off of the front of the trc-235 when you remove the front cover. If...
27 6. Insert a new matched pair of crystals (send and receive) into the sockets for channel b or c. The sockets for the crystals are marked next to channel a on the cir- cuit board with x1 (receive) and x2 (transmit). The channel’s letter (a, b, or c) is marked on the circuit board and on the diagra...
28 troubleshooting if your trc-235 is not working as it should, follow these suggestions to see if you can eliminate the problem. If you can- not, take it to your local radioshack store for assistance. Symptom suggestion weak, bad, or no recep- tion. Be sure the trc-235 is turned on. Be sure the vol...
29 maintenance your radioshack trc-235 2 watt 3- channel cb walkie-talkie is an example of superior design and craftsmanship. The following suggestions will help you care for your trc-235 so you can enjoy it for years. Keep the trc-235 dry. If it gets wet, wipe it dry immedi- ately. Liquids might co...
30 specifications receiver frequency coverage ... 26.965 – 27.405 mhz supplied with channel 14 receive (26.670 mhz) and transmit (27.125 mhz) crystals in the channel a position sensitivity (maximum) ......................... 0.6 µ v adjacent channel rejection ................. 45 db squelch ...........
31 notes 21-1620.Fm page 31 thursday, august 5, 1999 11:16 am.
Radioshack a division of tandy corporation fort worth, texas 76102 6a7 printed in china limited ninety-day warranty this product is warranted by radioshack against manu- facturing defects in material and workmanship under nor- mal use for ninety (90) days from the date of purchase from radioshack co...
