Radio Shack 20-426 manual Set up your scanner, Turn on your scanner, Set the squelch

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The Basics

step 4: set up your scanner

turn on your scanner

Turn VOL clockwise. The scanner turns on and the ALERT indicator lights for a moment. Then the alert tone beeps and TEST appears. The last setting you selected before turning the scanner off appears.

Note	The alert tone depends on the currently selected setting
	(see “Setting the Alert Tone Volume”).

set the squelch

Think of squelch as a gate. If the gate is too low (squelch too low), everything (all noise as well as signals) gets through. If the gate is set too high (squelch too high), nothing gets through. If the gate is set just right (the squelch is set properly), just the desired signals get through.

1.To set the squelch, press HOLD/RESUME to stop scanning. HOLD appears. If needed, adjust VOL until you do not hear a signal.

2.Turn SQL fully counterclockwise until you hear a hissing sound. This lowers the “squelch gate,” allowing all signals and noise to get through.

3.Turn SQL clockwise just until the hiss stops. This raises the “squelch gate,” allowing only strong signals to get through. In a city, you may want to adjust the squelch even further clockwise to decrease the range of the highway warning alert signal. This prevents the alert from sounding unnecessarily due to farther, less important sources.

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Contents Pro-2051 1,000-Channel Triple Trunking Mobile/Base Scanner Contents Set up your scanner Power your scannerBasics BasicsBeyond the Basics Advanced scanner featuresScanning a private bank Highway patrol alertsSignal Stalker Contents SkywarnWired programming WarrantyHOLD/RESUME Your scanner’s keypadTo Do This Your scanner’s rear view Trunk Your scanner’s displayFCC wants you to know Mounting the scanner in your vehicle Install your scannerThrough your vehicle’s ignition negative ground only Power your scannerFrom a wall outlet Rear View From your vehicle’s cigarrette lighterConnect your scanner Connecting the supplied antennaConnecting an external antenna Use extreme caution when installing or removing an Connecting an external speakerListening Safely Set the squelch Set up your scannerTurn on your scanner Scanning overview Basics Listen to preprogrammed frequenciesCommon scanner terms Basics Beyond the Basics Advanced scanner featuresChannel storage banks Storing known frequencies into channelsBeyond the Basics Locking out a channel in scanning mode Locking out a channel in hold modeBeyond the Basics Deleting a stored frequency Locking out channelsRestoring all locked-out channels Restoring a locked-out channel in hold modeMemory lock Beyond the Basics Hold/resume Direct channel accessScanning a private bank Changing the priority channel Beyond the Basics Priority scanService scanning Beyond the Basics Band search Setting a search bandSearch hold Data skipStoring search frequencies Beyond the Basics Frequency skipDelay Selecting the state Highway patrol alertsHighway patrol/local police scanning State Code Order Press these buttons Action Highway warning alert Setting the alert tone volumeBeyond the Basics Scan hold Highway patrol priority channels Adjusting alertMuting the alert tone Skip frequenciesTrunked highway frequencies About Skywarn SkywarnNWR Same Programming Fips Programming a Fips codeBeyond the Basics Signal Stalker Setting the signal stalker options Beyond the Basics Using signal stalker Trunk tracking Setting the squelchProgramming trunking frequencies Selecting Trunking System Type Programming id scan lists manually Edacs talk groups Motorola talk groupsReceiving trunked systems LTR talk groupsID scan hold mode ID scan modeID search hold mode Direct entry id hold modeID search mode Deleting a stored ID ID monitor modeProgramming scan lists during search Restoring locked-out IDs ID lockoutReviewing ID lockout Trunking frequency conﬁrmation Setting the delay mode for trunking modeSetting priority in trunking mode Multi-track Moving between scan list memoriesAbout multi-track Programming Edacs system frequencies Edacs trackingAFS partial entry Special Edacs featuresBeyond the Basics An Edacs trunked system Edacs ID blockout Edacs ID range searchEdacs Scat Tracking LTR systemsBeyond the Basics Tracking Motorola systems ﬂeet map programming Preset Fleet Maps E1P1 E1P5 E1P11 User-deﬁned ﬂeet maps Selecting a Preset Fleet MapFleet Map Size Codes Programming a Hybrid system Size code restrictionsProgramming a user ﬂeet map You can only enter within a range of 5-100 kHz, and 5 or Toggling the status bit Control channel only mode Disconnect tone detect option end code If the scanner receives no data from the PC for more than Cloning your scanner Birdies Replacing the fuse in the DC power cordProperly Beyond the Basics Resetting your scannerDrive by patrol cars but do not hear alarms? Frequently asked questions FAQsError appears on the display. What does it mean? If Frequencies SpeciﬁcationsGlossary Care Service and repair