Radio Shack (Realistic) PRO-2020 Scanner stuck in Scan Mode
I use the scanner to monitor water tower level, so it stays on one frequency all the time (never use it to scan). When there is a storm, I unplug it. This time when I plugged it in, it went into scan mode like usual, but the buttons had no effect: Couldn't stop scan to select a channel. Often one can reset some units by unplugging for a minute or so. Even 48 hours. If I turn off the unit, hold PROGRAM and 1,2,4,5,7,or 8, while I turn it on, it beeps and does not scan. Still, no entries can be made from the pad. It is stuck until I turn off/on, when it goes back to scanning. I can do the off/on trick while holding LOCKOUT, where it locks out the lowest channel, but can't unlock. Channel 1 and 2 are locked out now. The battery is dead, so I lost all my memory frequencies (that's OK, I only used one of them). SCAN or MANUAL buttons are supposed to stop the scan, but they don't. Is this thing toast?
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Re: Radio Shack (Realistic) PRO-2020 Scanner stuck in...
Sounds like old age - the 2020 is nearly 30 years old! Have you tried just using the LOCKOUT feature on all channels except the you want? How about just programming the same frequency into all 20 channels?
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Your PRO-2020, circa 1982, is old and tired, but not quite obsolete. The receiving bandwidth of this oldie is wide enough that you can just ignore the fourth digit. In some cases this may result in interference from an adjacent frequency, but it will usually work just fine. The 2020 is further limited in that it will not receive 800MHz frequencies, and it is not capable of tracking trunking systems or receiving digital transmissions, but what it does, it still does well. The PRO-2020, by the way, was one of the first keyboard-programmable scanners, and the first used in military intelligence surveillance operations.
Wow, that's a real oldie -- circa 1981. To program it: 1. Power the scanner ON. 2. Press MANUAL . 3. Select the channel that you wish to program. You can do this by repeatedly pressing the MANUAL key, or enter the desired channel (01 - 20) followed by the MANUAL key. 4. Press PROGRAM. 5. Enter the desired frequeny, including the decimal point (e.g., 156.55). 6. Presto ENTER. 7. To program more frequencies, press PROGRAM and then repeat steps 2 through 6.
The memory on the unit is not retaining the frequencies. Check for a small battery on the circuit board like a button battery you would find on your computer motherboard. Replace the battery and reprogram the unit.
You have to program it TRUNKING mode when you enter the control channel frequencies. It is decoding okay as the MO shows motorola control channel and +DG means digital decoded and an OPEN group. You need to press the 'trunk' button everytime a talkgroup comes up that you want it to remember for future 'closed' group (-DG) talk groups. I suggest you go to 'RadioReference DOT com" and there are many forums there for your radio, as well as one or two YAHOO GROUPS specifically for your scanner. 73's
If you mean a Bearcat 2020 radio, then that unit is ancient, and I'm amazed that it still works. If you're only monitoring one frequency, you can get a really cheap scanner to do that and replace the 2020.
The Realistic PRO-2052 is an old (vintage) scanner receiver with fixed
AM and FM modes on the bands it cover, as specified by the U.S. band
allocation. The PRO-2020 covers only the VHF and UHF frequencies and
modes AM and FM is not user selectable. Frequencies can be programmed
into any of the 20 memory channels
U.S. Coverage: (varies from state to state and other countries. We
don't use 30-50 Mhz here in the Philippines for 2 way mobile
communications, except for cordless phones)
30-50 Mhz Lower VHF at FM narrowband only (covers mobile, emergencies, businesses, etc. and
108-136 Mhz Aircraft band at AM narrowband only
138-174 Mhz Amateur and Commercial band at FM narrowband only (2 meter band)
410-512 MHz Amateur and Commercial band at FM narrowband only (70 cm band)
If you're trying to select AM or FM for a specified frequency, I'm afraid you can't do that as it is not selectable.
If you are trying to program AM Broadcast frequencies (mediumwave (MW)
or FM Broadcast frequencies (FM radio stations), those were not covered
by your PRO-2020's microprocessor. Even if you modify your scanner to
receive those bands, you will not hear radio transmission properly
since the receiver do not decode FM wideband, which is the standard
mode for FM broadcast and Television band.
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