Siren Speaker Mounting Tip


If you are one to install equipment yourself or you work in an upfitting shop, you do need to keep some things in mind when going through the installation process.

In the case with some siren speakers, you need to pay attention to the markings and stickers that are on them. (They're not just there for decoration)

I only bring this up because we recently had to perform some re-work on a vehicle that was upfitted by another company. The vehicle had Code 3 C3900 Slim speakers mounted on it and the 'owner' was complaining that the siren no longer worked. After troubleshooting the problem, we quickly realized that the problem was with the speakers that were attached to the system and not the siren itself. Upon inspecting the speakers themselves, we also noticed that both speakers were mounted upside down.

These particular speakers state, in two places, the orientation in which they need to be mounted; one on the sticker located on top of the speaker and one located on the bottom front face of the speaker. In this case, orientation is important; since they were mounted upside-down, rainwater (and I'm also assuming water from car washes) was able to enter the speaker and was not able to drain. 

In a nutshell, not following the manufacturer's instructions was roughly a $260 mistake (and there is no telling how many other upfitted vehicles are suffering from the same mistake).


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ORM T-MARC cable FAQs


What is the T-MARC?


The ORM T-MARC stands for "Tactical Modular Antenna Relocation Cable". It is a cable that is specifically built to move a two-way radio antenna from on top of the radio to another location on the wearer's body.

Why would I need a T-MARC?

Often, when operators are using radio communications gear with VHF or Multi-Band radios, the antenna can measure between 6" and 16" tall. Depending on where the operator wishes to wear/place the two-way radio (usually when mounted on an exterior body armor carrier or plate carrier), the antenna can cause potential interference with visual line of sight, weapon manipulation, weapon placement, other gear, and dexterity; especially when transitioning from a standing position to a seated on (like when trying to sit in a vehicle). In order to alleviate these problems and offer a higher line of sight for radio communications, the T-MARC is routed through the exterior body armor carrier or plate carrier, one end of the cable is connected to the wearer's radio, and the antenna is connected to the other end (typically at a higher point on the body (i.e. shoulder area)). This provides a greater degree of freedom for the operator while helping eliminate interference and obstructions.


As seen on eBay? Want more options?

Chances are that you may have stumbled across one of our postings on eBay. Due to the "variation" restrictions that eBay imposes (due to their coding), we are not listing every option available on eBay. In order to get the full list of options available, you have to go to ORMOHIO.SHOP. We would much rather list them all on eBay but it's just not possible. 

If we end up selling on Amazon, it may be a similar situation.

How do I know what length T-MARC to buy?

The easiest way to measure for your T-MARC is to mount your radio in the position in which you wish to have it. Then take a piece of string or 550 cord (parachute cord) and run it from your radio, through the exterior body armor or plate carrier webbing, and up to one of your carrier's shoulders. Once the string is routed, mark the string and remove it from the carrier. Now you can measure the total length of string up to the mark that you made. That distance, in inches, is what you will place in the "cable length" box during ordering. 

You can also guesstimate on how much cable you will need. However, since the idea is to route the cable with as little exposed to prevent snagging, this method is not suggested.

What options are available for the T-MARC?

Options for different radio systems and colors are available to suit a wide variety of applications. Most of which are available at our store. If you do not see an option available, do not fret; just email us at sales@ormohio.com and we can make a custom cable for you.

Who is the T-MARC designed to be used by?

The T-MARC is primarily designed with law enforcement and military personnel in mind. With that said, the T-MARC can also be used by security and security contractor personnel, survivalists, as well as Airsoft, Paintball, and MilSim personnel. Basically, anyone that is using a radio communication system and is wearing gear that the antenna can attach to is able to use the T-MARC.

Is the T-MARC made with quality materials?

YES. We designed the T-MARC with emergency services personnel in mind and communications within that realm is crucial; in fact, their life depends on it. Because we want the T-MARC to operate flawlessly in adverse conditions and in high-stress environments, we only source high-quality, mil-spec materials from our vendors. We will never use cheap, counterfeit, or low-standard materials in our T-MARC cables.

Is the T-MARC made in the USA?

Yes. While some of our vendor components come from Germany or Japan, the T-MARC is 100% Made in the USA by skilled Americans that have a background in RF Communications.

Why is the T-MARC so cheap when compared to some of your competitors?

This is because of a couple of reasons.

First, we understand that we are operating in a niche market and our potential clientele is rather narrow compared to if we were selling a standard product to the masses. We also understand that, within this niche market, law enforcement or military personnel are often buying this type of gear out of their own pocket versus receiving it from their department or company. We would much rather be more available to our clientele and make a smaller profit than attempt to alienate our customer base and strive for larger profits.

Secondly, we employ a lean manufacturing process that offers us the ability to operate without a large overhead. While this means that it may take 3-5 days before your T-MARC ships, it also means that we can keep costs down since we are not buying components/equipment that is not required.

Finally, we are not spending a lot of money on advertising, marketing, and trade shows. All of these tactics allow us to produce a robust and quality product without having to charge an arm and a leg.

What radios will the T-MARC work with?

For the most part, if the radio has a removable antenna, a T-MARC will be able to be installed. Below is a partial list of applicable portable radios, if you have any questions about if a T-MARC will work with a particular radio that is not on this list, feel free to email us at sales@ormohio.com.

  • Motorola MT Series
  • Motorola Saber Series
  • Motorola XTS Series
  • Motorola APX Series
  • Harris AN/PRC 152
  • Harris XL Series
  • Thales AN/PRC 148
  • Kenwood TK Series
  • Kenwood NX Series
  • ICOM F4000 Series
  • ICOM F1000 Series
  • ICOM F3000 Series
  • ICOM F7000 Series
  • Vertex VX Series
  • Most BaoFeng portable radios
  • Most TYT portable radios
  • Retevis portable radios with removable antennae
  • TRI Tactical radio clones (TRI PRC 152, TRI PRC 148, etc)
We can also make custom cables for SINCGARS radios such as the RT-1439, RT-1523, RT-1523, AN/PRC-117, AN/PRC-119, and AN/PRC-154. Just email us with information concerning your particular application. 


Why do you ask for a Radio Model on the order form?

This is primarily set up as a fail-safe measure. With us knowing what radio you wish to use the T-MARC for, we can potentially catch an accidental connector option prior to building and shipping. 

For example, if you are wanting to get a T-MARC cable for a Motorola XTS5000, which uses an SMA-Female connector, and your selected option for the radio side connector is a TNC male, we can then email you to confirm your connector choice. Some people are not sure which connector to order (by the way, you can always as us before ordering) and we don't want you to open your T-MARC and then be disappointed because you can't use it due to the wrong connector being ordered/installed.

How long of a T-MARC cable can I order?

Typical T-MARC cables (that are physically worn) are between 12" and 48" in length. However, we technically have the ability to make custom cables up to 50 feet in length (orders for cables over 48" (4 feet) in length are custom and we must receive an email request since that length does change cable pricing). 

Keep in mind that we will contact you if you do order a T-MARC that is longer than 10 feet in length. We do this because we want to make sure that your order wasn't the result of a typo and we want to make sure that the requested length of cable is applicable to your end-use. After all, if you attempt to use a 5-watt radio with 50 feet of cable, the total signal loss involved basically cuts the radio output to 1.5 watts instead of the original 5w; you will not get the performance that you are wanting. 

Can I order a sleeving (braiding) color that is not on the list?

Yes. We have approximately 18 different color options that we can get from our vendor but we only listed and stock the 7 most common colors in our store. If you want a particular color from the following list (Airsofters and Paintballers), just email us and we can do a custom order for you.
  • ACU Digital
  • Acid Purple
  • Dayglow Yellow/Neon Green
  • Imperial Red
  • Multi Camo
  • Neon Green
  • Neon Orange
  • Neon Pink
  • Neon Turquoise
  • Neon Yellow
  • Royal Blue 


Is there a warranty on the T-MARC?

Due to the variable environments that the T-MARC can be deployed in, we offer a limited warranty on the T-MARC cable.

T-MARC cables are covered by a limited 12-month warranty. Warranty coverage is limited to defects in manufacturing or materials. Items physically damaged or when there is evidence of improper use are not covered under the product warranty. ORM does provide reasonable and discounted repair services for non-warranty repairs and do, on occasion and with prior approval, repair product manufactured by other companies as a courtesy to our customers.

Do you offer bulk T-MARC discounts?

Yes, we have a basic discount for 3 or more T-MARC cables available on our ORMOhio Store. If you are a government agency, police department, or military unit, contact us before submitting a bulk order and we may be able to grant you an additional discount for your order. 


Are the connectors available in black?

There are a couple 'black' connectors that we have found and we are currently testing them. So, while we may offer black connectors in the future, they are currently not available.





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