Question about Ritron /Jobcom Lapel /Jobcom JBS146D, 446D, JBX151, 155, 455, JMX102, 141D, 144D, 146D, 441D, 4... 2-Way Radio

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Realistic pro 2021 squelch problem

I have squelch problem with pro 2021 scanner .
The problem seem te be R80 3.3k when i put my finger on it the problem is solve when i remove my finger the problem come back .i make all the solder on the pcb .any idle thanking you in advance.J.P

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  • JPFX Mar 20, 2008

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1 Answer

Just insert a sausage in there. A sausage is meat with skin around it.... a finger is the same thing.

Posted on Jun 13, 2008


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2 Answers

Owners manuel for Radio Shack Pro-2039

Nope... seems that since Radio Shack folded up it's tents almost all of the old links have dried up! And GEE, I had one of these scanners but have no idea where it is now?

A FEW of the exceptions follow...

This Link is for the Pro-2021 BUT your PRO-2039 programming will be much the same!

Radio Shack Realistic Pro 2021 Scanner Programming and Overview

This link may help you too but it's a much more advanced scanner!

RadioShack Pro 2050 Scanner Programming Tutorial Police Scanner

PRO-2039 SPECIFICATIONS RigPix Database RadioShack Realistic Pro 2039 20 7462

GENERAL Type:VHF/UHF receiver/scanner Frequency range:66-88 / 108-174 / 380-512 / 806-960 MHz (Europe) Tuning steps: Mode:AM/FM Channels/memory management:200 regular in 10 banks @ 25 ch/sec
10 monitor Power supply:Mains Current drain/power consumption:Max 13 W @ 230 VAC Antenna impedance/connector:50-75 ohms / ? or built-in telescopic whip Dimensions (W*H*D):190*80*180 mm (7.5*3.12*7.12") Weight:1 Kg (2.2 lbs) Other features: RECEIVER SECTION Receiver system:Double conversion superheterodyne
1st IF: 10.7 MHz
2nd IF: 455 KHz Sensitivity: Selectivity: Image rejection: AF output power/speaker:1 W at ?% distortion / 8 ohms External speaker connector: MISCELLANEOUS Manufactured:China, 199x-199x (Discontinued)

For "PURE AUDIO" there is a MODIFICATION/Link:


Dec 21, 2017 | Radio Shack Radio Communications

1 Answer

Why won't my Realistic Pro 2020 stop scanning

You might have the squelch turned up too high so the broadcast cannot break the squelch open. Here's an instruction manual (with how-to) for your scanner. Seems easy. Also make sure you have a good antenna so you can pick up signals.

Sep 08, 2015 | Radio Communications

1 Answer

I have a Pro 96 radio and for whatever reason it suddenly just make a squelching sound.

hello this is natural thing with a scanner what you were probanly noticing was a static discharge some where in the vacinity of your scanner to avoid this ajust the squelch level 3/4 turn maybe this will solve your problem

Feb 14, 2011 | Radio Shack Pro-96 Scanner

1 Answer

I just bought a used PRO-2021 Programmable Scanner. Shouldn't the display have backlighting? If so, can I get it repaired? What cost am I looking at? Thanks. --- Al

The PRO-2021 has a, "Electro Luminescence" (lighting) panel mounted behind the LCD display which has likely died of old age. The panel is Radio Shack part number L-1976 (GE-85D-6067), but with your scanner being out of production for about 25 years, the part will be just about impossible to find.

Bill B
Listening in since the 60's

Sep 24, 2010 | Radio Shack Radio Communications

1 Answer

Radio scanner no volume realistic pro- 2021 model #20-113 has loud squelch but voices only whisper what is the problem and how can i fix it. Thank You Lyman

frequency may not be accurate. get the correct frequency your tuning in to. could be off a few digits. then readjust your squelch.

Feb 16, 2010 | Radio Shack Radio Communications

1 Answer

Unable to operate no instructions

Try going

Sep 22, 2009 | Radio Communications

1 Answer

I have a Realistic Pro 2021 and it doesn't pick up no channels, and idk how to program it please help.

your scanner will have to have some crystals put in it that are specifically for the signals you wish to scan. go to any radio shack store or scanner store with your scanner and they will gladly assist you.

Sep 07, 2009 | Office Equipment & Supplies

1 Answer

Squelch quit working in regular scan mode PRO-528

Just fixed my squelch problem; I don't know how it happened but Resistor 138 was burned & intermittant. It was so badly burned that I could not read the color code but it measured 880 ohms intermittantly. I replaced it with an 860 ohm carbon resistor & all seems well; time will tell. R-138 is located on the circuit board right behind the squelch potentiometer. R-139 is immediately behind the pot & R-138 is next to R-139. All I had to do is remove the 4 screws on the back of the case & the unit splits in half. I clipped the old resistor out leaving a bit of the old leads so I could solder in the new resistor without having to get to the backside of the circuit board. Scanner is working as I type this & I hope it does not burn out again. Hopefully this is the same problem in your scanner & an easy fix. Good luck.
Bob Tomlin

Dec 11, 2008 | Radio Shack Pro-95 Handheld Scanner

1 Answer

Not scanning

Assuming that the squelch operates, the problem lies in a circuit that interfaces the squelch & scanning circuits. Probably not worth the cost of repair.

May 13, 2008 | Radio Shack Pro-95 Handheld Scanner

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