Category Archives: Scanner 101

Force Write full Database (HP1, HP2 BCD436 and BCD536)

Posted on by

When updating a HP series (HomePatrol 1 and 2, BCD436HP and BCD536HP) scanner one of the update is the database that the ZIP Code feature relies on. If the database has old or incorrect data then it can affect whether you will be able to hear your target. If you update the database on a regular basis you can help ensure that you will hear what you want.

When you update the database within Sentinel (the free software provided by Uniden to support these scanners) it doesn’t actually update the database on the scanner itself. You have to “Force-Write” the database to the scanner. This is easy; after you “Update Master HPDB” in the Update menu just click the “Force-Write Full Database” button on the Write to Scanner (or Write to HomePatrol) item in the Scanner (or HomePatrol) menu.

This ensures that the Master HomePatrol database on your scanner is up to date.

When the best scanner isn’t a scanner (Unication Receivers)

Posted on by

Unication G5 Dual BandIf you live in an area covered by a Simulcast P-25 radio system you likely have suffered from Simulcast Distortion. This is the interference and missed calls caused by simulcast sites of these radio systems interfering with each other. All scanners have this issue and there are various things one can do to remedy the situation. This includes relocating or reducing the antenna, use of a directional antenna or turning on the attenuator.

Sometimes even this doesn’t help. If you really get in a bind there are other ways to get better reception. For some this means getting a specially programmed two-way radio set up on the system and using it as a monitor. While sometimes these can be programmed for receive only there are problems with this approach. First off is legality. Unless authorized by the system owner it may be illegal to have such a radio set up on the system due to the use of a “System Key”. Some states even This is considered to be intellectual property and restricted to authorized personnel. Even if you got past this hurdle two-way radios for these systems are expensive, sometimes over $5000. Add into that programming software ($300) and cables ($200) and pretty soon you are talking about real money.

The Unication receivers provide a possible solution that is much more reasonably priced, does not require permission or special codes or keys for the system but with reception rivaling that of the expensive radios at a fraction of the cost. The downside is that the Unication is not as flexible as a scanner and does not allow for field programming.

The Unication provides professional quality reception at a hobbyist price. While more expensive than scanners, it receives P25 Simulcast systems as well as the expensive two-way radios do at a much lower price.

ScannerMaster can program the Unication radio for you, be sure to select this option at the time of purchase if you want it. You can also do the programming yourself with a Windows computer, the software is free from Unication. Of course if there are any questions our knowledgeable staff is here to help!

The Unication G4 works in the 700 and 800 MHz. bands. The G5 works in these bands plus another, such as VHF or 2 different UHF bands. Currently they work on Phase 1 systems only but a Phase 2 upgrade will be available soon. This will be a paid update but pricing has not yet been announced.

Update the firmware on your scanner!

Posted on by

Why would you want to update the firmware on your scanner, and how do you do it?
First, let’s explain WHAT firmware is. Firmware is the operating system of your radio, it works behind the scenes and tells the radio how to deal with things like keyboard inputs, frequencies, etc. Just like your computer or phone has an operating system (Like Windows 10, iOS etc.) scanners do too. Remember, scanners these days are miniature computers; they work much in the same way.

Firmware updates are released for a couple reasons. They either fix a problem or add/change features. Sometimes they do both. As an example, the BCD436HP’s most recent firmware update added the ability to add ProVoice and DMR digital protocols, before that firmware updates addressed an issue with clock settings.

When updating firmware one must follow ALL instructions CAREFULLY! You have the possibility of “bricking” your radio if you don’t do it right. This means that your $500 scanner may now be more useful as a brick than a radio… Follow the provided instructions to the letter and make sure that the program and firmware file you use is intended for your radio. The firmware for the PRO106 will not work on the WS1040!

Before trying to update the firmware on your radio make sure you have properly downloaded the firmware file itself as well as the installation program (if needed) BEFORE you start. If you do not have a replacement firmware file to install do not start the process since this erases the existing firmware to make the radio ready for the new version. No new version means no radio once you get going.

Some radios firmware updates are easier than others. The HomePatrol type radios use a program called Sentinel to check for new firmware versions and install them (easy, safe). Other Uniden scanners use a “Bearcat Version Updater” program to install a new update. GRE/RadioShack/Whistler scanners also use an application to install new firmware versions (nerve-wracking maybe).

What they all have in common is that they require a computer running Windows to update. (You can do it with a Mac running Windows with Parallels, Fusion, Bootcamp etc.) You also need the appropriate cable to connect from your computer to the radio. This is usually done via USB but some older radios use a Serial port.

Before updating your firmware make sure you have the following on hand:
• The radio you want to update
• The proper cable for your radio, along with the drivers already installed (if needed)
• The Firmware Updating program appropriate for your radio
• The actual firmware file itself (Imperative!)
• A strong sedative or plenty of alcohol to calm your nerves (optional)

Follow the instructions included with the firmware update TO THE LETTER. Make sure your radio and the computer can communicate properly. If you have programming software for your radio then read it first and save the programming file just in case you need to restore it to the radio. This also ensures that the radio and computer can communicate.

We also suggest that you check the RadioReference forum for your radio to see what other people’s experiences have been. Reading about someone else’s mistake is a lot easier than trying to fix your own.

Owners of PRO651 and PRO652 scanners that had tried to update their radios’ firmware versions had issues since no firmware updates were available until recently. Now one can download them and install them so previously bricked radios can be reincarnated.

ScannerMaster can update the firmware on many different models of scanners. Download the Hometown Programming Form for your radio and check the Firmware Update option if you would prefer our expert programmers to do this for you. We keep them heavily sedated all of the time already so their nerves are steady. Firmware Updates for “Zip Code Scanners” (HomePatrol, 436/536 and the TRX/WS1080/1088/1095/1098 series scanners) is included with the Setup and Optimize package already, it is an extra cost option for other scanners. If you aren’t sure call us and we will let you know.

Got a bunch of scanners and only 1 antenna? Get a Multicoupler.

Posted on by

Got radios (plural)? If you have more than 1 radio and want an outside antenna you can share the antenna with multiple radios. There are 2 ways to do this, the cheap way and the right way.

The cheap way is to just put a passive splitter or “T” adapter. While this will work for 2 radios listening to strong local signals, it will not work well for anything else. It also opens you up to interference between the two radios.

The right way is to use a multicoupler. A multicoupler has special circuitry to isolate the radios from each other so they don’t cause interference. It also reduces loss and maintains proper impedance matches. Active (powered) multicouplers include a small amplifier that overcomes the insertion loss caused by the multicoupler itself so that the signal appearing at the radio is the same as it would be if the antenna were connected directly to it.

The Stridsberg line of Active Multicouplers are well known as the best way to allow many radios to share a single antenna. With the isolation and amplification provided by it there is little or no interference between the scanners. You can connect up to 8 receivers to one antenna with no loss or interference.

Stridsberg multicouplers come in 4 or 8 port versions. They use BNC connectors for the antenna input and radio outputs. ScannerMaster also sells BNC cable jumpers to connect the multicoupler to the scanner.

DMR, ProVoice and Ultimate Updates for Uniden Scanners.

Posted on by

ScannerMaster offers a service to install the various paid updates for Uniden HomePatrol, x36 and P2 series scanners. These updates include the HomePatrol Ultimate Update (for HomePatrol 1 and 2 scanners) as well as the ProVoice and DMR/TRBO updates for the BCD436HP, BCD536HP, BCD996P2 and BCD325P2 scanners.

If you buy one of these scanners from ScannerMaster we offer a service to install these options for you before we ship the scanner. You can also send the scanner to us to perform the update, we then send the radio back to you.

Sometimes however it is not practical to send the radio to us. For US and Canadian customers it is pretty simple to buy the update directly from Uniden and install it yourself. For customers in other countries however it is a different story. Uniden can only accept credit cards from US and Canadian addresses. If you live in other countries then Uniden cannot accept your credit card for payment for these updates. They will refer you to a third party like ScannerMaster to obtain your updates.

ScannerMaster can accept credit cards from most countries. As long as the card works on our payment system we can provide you with the secret code to unlock the update for your radio. There are a couple things you will need to do to make this all work out:

First you need to update the FIRMWARE for your scanner. This is so important that if you don’t do it the paid updates just will not work! On the HomePatrol and x36 scanners it is done thru the Sentinel software, on the 325 and 996P2 radios it is done thru a separate (free) program available from Uniden’s website.

Once you have done the Firmware Updates then you need to obtain the “ESN” (Electronic Serial Number” from your scanner along with the “SUM” code. Here are the procedures for this:

HomePatrol-1 and HomePatrol-2:

  • Press Menu
  • Press Advanced Menu
  • Press the down arrow to get to the second page of items
  • Press the Version Information Button.

The ESN is listed and starts with 36 for the HP-1 and 37 for the HP-2. The SUM Code is the last 3 digits past the second dash. The ESN will look something like 36327-0040012345-123, the SUM code is the “123” part.

BCD436HP, BCD536HP, BCD325Ps and BCD996P2:

  • Press Menu
  • Select Settings.
  • (If you do NOT see “Upgrade” as an item in the list go back and update the firmware and start over!)
  • Select See Scanner Information
  • Select Firmware Version
  • The ESN will be listed as “SN37……”
  • The SUM Code will be a 3-digit letter/number combination.
  • We need both the ESN and the SUM Code. Don’t worry about the M-VER code.

We need the complete ESN and the SUM Code as well as the model of radio you have. With this info we can obtain the one-time code that unlocks the feature you want and send that code to you. You then go to the Upgrade menu on your scanner and enter it using the rotary knob to select the numbers. Once the code is properly added the radio will think it over for a minute or so and then announce that it was successful.

Once properly updated the code will stay working on the radio and will not need to be reinstalled. The code will only work for the radio it was obtained and if you dispose of the radio there is no way to transfer the code or feature to another radio.

GPS Based Scanning Tips

Posted on by

Several Uniden scanners support GPS based scanning. There are two main ways this works; Database based and Programming Based.

Scanners that support ZIP Code based programming (The HomePatrol and x36 types) can support GPS in both ways. Scanners that do not have the ZIP Code feature only support Programming based GPS.

ZIP Code based GPS scanning allows the radio to reload itself with the local frequencies based on locations provided by the attached GPS receiver. Instead of pulling over to change the ZIP code every once in awhile the GPS receiver sends the location to the scanner and it will update the location on a regular basis and reload the channels for that area.

Since these use the RadioReference database to provide the information, the GPS centers and ranges are set in the database and included when you update the scanner’s database in Sentinel.

Programming based GPS scanning requires that the Systems, Sites and Groups (or Favorites Lists) be programmed with GPS coordinates and ranges. The GPS sends the location to the radio and when the radio determines that you are within the circle drawn based on the location and range it turns on that item. When you leave the circle it turns it off.

If you use your scanner over a wide area a GPS can allow you to automatically turn on and off systems, sites, groups and/or Favorites Lists automatically and without having to punch in a ZIP Code all the time. If you only use the scanner at home or around a small area a GPS wouldn’t help you but if you travel a lot (RV folk, truckers etc.) it can be invaluable.

Most people use the Uniden GPS receiver with their scanners. It works on all Bearcat GPS-aware scanners without needing to configure it. If you want to use another GPS it has to support the older Serial format and the baud rate settings must be set to match that of the scanner. Most GPS receivers these days (Garmin, TomTom etc.) do not support Serial mode so you will likely be better off with the Uniden GPS.

Scanners that support GPS Scanning:

How to connect the Uniden Bearcat GPS Receiver to the Uniden Bearcat BCD325P2 and the SDS100 Scanner with the optional cable.

Pro and Con scanner vs Baofeng etc.

Posted on by

Over the past few years there have been many inexpensive two-way radios on the market that have been very popular. For under $50 one can get a Wouxen, Baofeng or other brand two-way radio that can operate on many of the common police, fire and EMS channels. While as capable as they are cheap they are not viable as a mission-critical device and are not particularly useful as a scanner. These are commonly called “CCR’s” (Cheap Chinese Radios).

There are several reasons these are not ideally suited as a scanner replacement. The frequency range of these is often limited to certain VHF and UHF ranges. While they may have some of the same features as scanners, like field programmability, limited scanning and others they do not behave like scanners in many ways. Most scanners cover more frequency ranges, have more channels, more flexible scanning and often other features not found in CCR’s.

While these CCR’s are fine for family communications and amateur use, they are not appropriate for mission critical or serious comms. Without trunking, digital modes and other features they are not usually a good replacement for scanners unless you have very limited monitoring needs.

 

Antennas: Get creative!

Posted on by

Scannists are always looking for better antennas. The right anttenna can make the difference between hearing your target or not. It is often said that the antenna is more important than the radio it is connected too. One can spend more money on the antenna system that the radio, it is that important. Even more important that the antenna itself can be the coax that connects it to the radio.

That all being said, sometimes there is a way to improve your antenna situation without breaking the bank. In this spirit let’s look at a couple rules that can be broken creatively to get a decent antenna solution at a reasonable price.

Let’s start at the top. With antennas elevation rules all. The higher it goes the better, well most of the time anyway. Does it have to be mounted on the roof however? It might work quite well in the attic. Attic installations can also save on other matters. You usually don’t need fancy mounting gear for attic antennas, just hang it from a rafter or set it on the floor. Antennas in the attic are well protected from the weather and you can do installations in the rain without getting wet.

If you live in an HOA then you might not be allowed rooftop antennas anyway so the attic might be the only way to go. It is not without its problems however. If you have a metal roof or other metallic structures above they would be a problem. Watch for metal backed insulation sheeting, HVAC hoses and other obstructions.

If you live in rental housing or a condo you might not even have the ability to use attic antennas at all. If this is the case then you are stuck with inside antennas. There are a couple things you still could do. Can you mount an antenna on a balcony or patio? How about putting a mobile magnet mount antenna on a refrigerator or air conditioner? Hang a rooftop type antenna from the ceiling or mount on the balcony? There are a lot of different things you can do when limited by space, rules or conditions.

When mounting an antenna on the roof or in the attic be sure to use quality feedline (coax). For scanners either 50 or 75 ohm coax works fine. Avoid the use of adapters as much as possible and try to use the shortest amount of coax as possible. Having 30 feet of coax coiled up in a corner will reduce the effectiveness of the antenna dramatically.

As always, if there are more questions you can ask your friendly (well sometimes grouchy) scanner expert here at ScannerMaster!

What to do with my scanner when the cops go to encryption?

Posted on by

Encryption is a four-letter word among scanner enthusiasts. Encryption is the act of scrambling a signal to make it unmonitorable to radios not equipped with the proper technology and (most importantly) the proper key. The encryption keys are code numbers that are set up to assure that only permitted radios may hear and participate in a communication.

There is no way to decrypt a modern encrypted communication with a scanner, even with any of the various updates. Contrary to the occasional belief, the “Extreme Update” etc. does not open encryption. Neither will any firmware updates.

The only way possible to hear an encrypted communication is with a properly programmed System Radio programmed with the encryption keys. Occasionally police departments with encrypted systems will provide a system radio with basic talkgroups to media, wreckers, neighboring agencies and others that might have a legitimate need to monitor them. Unfortunately this privilege does not extend to scanner users.

So now what do you do if your agency goes to encryption? Often the police will be the only ones to go encryption so you may still be able to listen to other agencies like Fire/EMS, Street and Utility departments and mutual aid channels, often on the same radio system as the encrypted agency. Often the old channels are still in use for other purposes, as backup, tactical, or car-to car use. Some agencies only have encryption on certain channels, for example Tac or Swat, while leaving Dispatch in the clear.

Your scanner may still be used for many other services that rarely use encryption and you may discover all new listening experiences. For example, railroads, aircraft and business operations may still be monitored. Try listening to these services for a while and you might get interested in them. They can be fascinating, even more so than police traffic.

There is also the (slight) possibility that the agency could remove or reduce the use of encryption. In these days of mistrust of the police, however unjustified, encryption can be seen as a block to transparency. Some agencies have since removed encryption from routine dispatch channels for this reason.

PS: Modern encryption is most common these days on P25 digital systems but can also be used on other digital systems. Older analog systems occasionally used rudimentary scrambling that could be cracked with decoder kits or even monitored by some people that could make it out audibly. Those systems are pretty much all gone these days and rarely encountered due to the ease of being overcome.

Just because the police are gone from your scanner doesn’t mean the scanner is totally useless.

Sentinel, Sentinel: What’s the difference?

Posted on by

Owners of Uniden ZIP Code scanners can use the free Sentinel software to do database and firmware updates as well as create and edit Favorites Lists. While they look and feel very much the same, the versions of Sentinel for the HomePatrols is different than that for the BCD436HP and BCD536HP.

The HomePatrol Sentinel works for both the original HomePatrol 1 and the newer HomePatrol 2. When installed on your Windows computer it will have a brown shield icon on the desktop.

The BCDx36HP Sentinel works for both the BCD436HP handheld and the BCD536HP desktop/mobile scanners and has a green shield icon on the desktop.

You can easily share Favorites Lists between HP-1’s and HP-2’s as well as between 436’s and 536’s. In order to share Favorites Lists between HomePatrol’s and “x36’s” you need to export from one and import it to the other.

If you have both types of radios you will need to install both versions of Sentinel. Even though they look and feel the same they cannot handle the other radio types. There is no additional learning curve but there are a few terminology differences. For example, in the HomePatrol Sentinel the menu used to read or write to the radio is called “HomePatrol” while the x36 version it is “Scanner”.