Instruction/ maintenance manual of the product 20-422 Radio Shack
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Cat. No. 20- 422 OWNER’S MANUAL Please re ad befor e using this equi pment. 200CH VHF/Air/UHF Home Scanner with Scanner Control Protocol and WX Alert 20-422.
2 FEATURES Y our Radio Shack 20 0Ch VHF/A ir/UHF Home Sca nner lets you in on all the ac- tion! Thi s scanner gives y ou direct ac - cess to o ver 23,000 freque ncies, includi ng tho se u sed by poli ce an d fire departme nts, ambul ance and tran spor- tation servi ces, gov ernment age ncies, and amat eur radio s ervic es.
3 Key Confirmation Tones — the scan- ner sounds a tone when y ou perfor m an operatio n corr ectly an d sound s an erro r tone if you mak e an error . Memory Backup — ke eps ch annel f re- quencies stored i n memory fo r an ex- tended tim e eve n if y our scann er lo ses power .
4 FCC NOTICE Your sc anner m ight caus e TV or r adio interfer ence ev en wh en it i s oper ating properly . To deter mine whe ther you r scanner i s cau sing the int er fer en ce, tur n off your scan ner. If the interfe rence goe s away, your s canner is caus ing it.
5 CONTENTS Preparation ....... ............. ............ .................... ............. ............. ............. ................... 6 Removing the Display Protec tor ............... ............. ............. ............. ..................
6 PREPARATION This sca nner is de signe d for use in the home as a base sta tion. Y ou can place it on an y fl at su rfac e such as a desk , shel f, or t abl e. REMOVING THE DISPLAY PROTECTOR Y our sca nner ’s dis play is prote cted dur - ing ship ment by a piece o f film.
7 adapter . Y our loca l Radio Shack s tore carries a wi de v ar ie ty of c oax ia l a nten na cable an d conn ectors. Once you choos e an antenn a, foll ow the mounting instruc tions s upplie d with the antenna. Th en route the an tenna’s cable to the sc anner and co nnect the ca ble to the ANT jack on the back of the s canner .
8 CONNECTING AN EXTERNAL SPEAKER Y ou can con nect an opti onal exter nal speaker with a 1 / 8 -inch (3.5-mm) plug to the sc anner . Use an 8- ohm exter nal speaker that can ha ndle a t least 2.5 watts of power . Y our l ocal Ra dioSh ack store sel ls scan ner acces sorie s, includ - ing exter nal spe akers.
9 UNDERSTANDING Y OUR SCANNER A LOOK AT THE FR ONT P ANEL VO L U M E Turns th e scanne r on or off and a djusts t he volum e. SQUELCH Adjus ts the s canner ’s sque lch.
10 1–9, 0 Each key has a singl e-digit label, and the 1 – 9 a nd 0 keys also ha ve a range of numbe rs. Use th e digits on the keys to enter the numbers fo r a channel or a frequenc y. Use the range of numb ers above the key ( 61–80 , for example) t o se- lect or d eselect the ch annels in a cha nnel- storage bank.
11 PRI Appears wh en the pri ority featu re is tu rned on. L/O (lockout) Ap pear s when y ou lo ck ou t chan nels or skip a fr equenc y, or when you ma nu al ly se le ct a ch a nnel o r f req ue nc y t hat i s lo cke d out or ski pp ed . DLY Appears when the scan ner is sc anning or searc hing when yo u have pro grammed a 2-second delay .
12 UNDERSTANDING B ANKS AND BAN DS You can stor e frequen cies in to eith er a program ma ble m emo ry l oc ati on c alled a chann el, or a te mpora ry memory loca - tion cal led a moni tor memor y. You c an store a freq uency i n each of the scan - ner’s chan nels (up to 200) a nd up to 10 monitor memor ie s.
13 This ta ble shows the frequen cy ba nd ranges display ed by the s canner a nd the typic al usage, fr equency cove rage, and step f or each. Notes: • Y our scann er sear ches at the preset frequency step rate (5 or 12.5 kHz) for e ach band. Y ou c annot chan ge the f requenc y step rate.
14 OPERATION T URNIN G ON THE SCANNER/SETTING V OLUME A ND SQUELCH 1. T urn VOLUME and SQUELCH full y counte rcloc kwise. 2. T urn VOLUME cl ockw ise until you hear a hi ssing s ound. 3. T urn SQUELCH clockwi se, then leave i t set to a po int j ust after the hissin g soun d stops.
15 Follow th ese steps to manua lly stor e a frequenc y int o a channe l. 1. If the scanner is sc annin g, press MANUAL . 2. Us ing the number key s, enter the channel number where y ou want to store a frequenc y .
16 2. T o manuall y search the ban d, press HOLD after t he scan ner sta rts auto - matical ly searc hing the fr equen - cies. T he scanner disp lays H (hold), ▲ or ▼ , and a freque ncy w ithin the band you selec ted. 3. Repe at edl y pres s ▲ to step from the lower to the upper rang e, or ▼ to step from the uppe r to the lowe r range.
17 Y ou can also se lect a monito r memor y by rep eatedly pressi ng MON ITOR until the desir ed monit or mem ory app ears. Note: T o l isten to the monito r memor ies, the prio rity chan nel fe ature mu st be turned off (see “ Priority ” on P age 20) .
18 Notes: • Y ou can ma nually se lect an y chan - nel in a bank, even if the bank is turned off. • Y ou cannot turn off all ten bank s. • The scanner skips cha nnels that have been locked o ut (see “ Skipping Frequenc ies/Ch annels” on Page 19.
19 SPECIAL FEATURES DELAY Many agen cies us e a two-w ay radio sys- tem that might hav e a pause of seve ral seco nds betwe en a qu ery and a r eply . T o avoi d miss ing a reply , you can pro- gram a 2- second de lay in to any of y our scanner ’s channel s or fr equencie s.
20 Note: If you turned the key ton e off (see “T urning the Key T one On or O ff” on Page 2 1), the sc anner do es no t beep when you h old down S/S-LOCKOUT . Removing Lockout from Channels Follow t hese step s to r emove the lo ck- out from a channel while sc annin g.
21 T o turn off the prio rity featur e, press PR I- ORITY . PRI disapp ears. Note: If you ar e scann ing mo re than o ne bank in wh ich a p riority c hanne l has been program med, the scanner stops on the l owes t- num bere d p rior ity ch ann el first wh ile scanni ng.
22 A GENERAL GUIDE TO SCANN ING Your sc anner’s receptio n is mainl y “line- of-sig ht.” You us ually ca nnot hear stations that are b eyond the horizon . GUIDE TO FREQUENCIES Ham Radio Frequencies Ham radio op erators ofte n broad cast em ergency in format ion when other means of commu nication brea k down.
23 GUIDE TO THE ACTION BAND S Typical Band Usage Primary Usage As a gene ral rul e, most of th e radio ac tivity is co ncentrat ed o n the follow ing frequen- cies: VHF Band UHF Band Note: Remote contro l statio ns a nd mob ile uni ts oper ate at 5 MHz h igher th an the ir associ ated ba se st ations an d relay repea ter units .
24 BAND ALLOCATION Use the fo llowing l isting of the t ypical servi ces withi n yo ur scan ner’s fre quency c over- age to assis t you to decide whic h frequenc y ranges to scan. T hese freque ncies ar e subject to chang e, a nd mig ht v ar y from ar ea to ar ea.
25 TSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trunked Systems TVn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM-TV Audio Broadcas t USXX . . . . . .
26 152.030–15 2.240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB 152.270–15 2.480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, T AXI, BUS 152.510–15 2.
27 70-cm Amateur Band (420–45 0 MH z) 420.000–45 0.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM Low Band (450–470 MHz) 450.050–45 0.925 . . . . . . . . . . . . . . . . . . . . . . . . .
28 T ROUBLESHOOTING If your scann er is not wor king as it shou ld, thes e suggesti ons might he lp you elim i- nate th e problem . If the scan ner still does n ot oper ate prop erly, ta ke it to you r local RadioShac k store fo r assi stanc e. SYMPTOM S UGGEST ION Scann er is on , but will not sc an.
29 CARE AND MAINTENAN CE Your RadioShac k 200Ch VHF/Air /UHF Hom e Scanner is an exampl e of superio r de- sign and craftsman ship. The following sugge stion s will help you ca re for your sc an- ner so you can enjoy it for y ears. Keep the s canner dry.
30 SPECIFICA TIONS F requen cy Cov er age: VHF Lo ........... ............. ................... ............. ............. .... 29.7 – 50 MHz ( in 5 kHz step s) Amateur Radio ......................... ............. ............. .......... 29 – 29.
31 Antenna Im pedance .............. ............. ............. ................... ............. ............. . 50 Ohms A u dio P ower .................... ............ ............. .................... ............. .... 840 mW Maximum Built-I n Speaker .
RadioShack A Division of T andy Corporation Fort Worth, T exas 7 6102 UBZZ01309Z Z 12A99 Printed i n the Phili ppines Limited O ne-Y ear Wa rranty This pro duct is warrante d by RadioShack aga inst ma.
An important point after buying a device Radio Shack 20-422 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Radio Shack 20-422 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Radio Shack 20-422 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Radio Shack 20-422 you will learn all the available features of the product, as well as information on its operation. The information that you get Radio Shack 20-422 will certainly help you make a decision on the purchase.
If you already are a holder of Radio Shack 20-422, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Radio Shack 20-422.
However, one of the most important roles played by the user manual is to help in solving problems with Radio Shack 20-422. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Radio Shack 20-422 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
