Bakers Communications: ComTrain Certificate # 2026-20350-10

The certification number shown above is registered to the company with each employee assigned an individual ID card bearing this number. Each employee is issued a certification card which must be carried on their person and be able to display their certification card when working on-site at any time a request is made by an authority.

Copies of Baker’s employee’s ComTrain certification cards are shown in the appendix with the employee resume’s.

Our Tower Crew Employees have received certification in Safety LMS Training for tower climbing as Competent Climber along with Competent Rescuer. We also have an on-staff Safety LMS Instructor for training.

Baker’s Communications has several technicians that are trained and certified in the operation and reading of the Anritsu Sitemaster antenna system analyzer. The current model (331D) is what we use to check existing 3 main item of a antenna system. First is the Distance To Fault (DTF), Return Loss (RL) and Cable Loss (CL).

The insertion loss of the cable needs to be taken into consideration when making system return loss measurements. The picture below illustrates how the cable loss changes the perceived antenna performance. The antenna itself has a return loss of 15 dB but the 5 dB insertion loss improves the perceived system return loss by 10 dB (5 dB *2). Even though this is something system designers take into consideration when setting up the specifications of the site, it is important to be aware of the effects the insertion loss and also cable return loss can have on the overall system return loss. A very good system return loss may not necessarily be a result of an excellent antenna; it could be a faulty cable with too much insertion loss and an antenna out of specification. This would result in a larger than expected signal drop and once the signal reaches the antenna, a great portion of the signal is now reflected since the match is worse than expected. The end result is that the transmitted signal is lower than needed and the overall coverage area is now affected. In other words, if your system return loss is too good, it is not always a good thing.

The return loss and VSWR measurements are key measurements for anyone making cable and antenna measurements in the field. These measurements show the user the match of the system and if it conforms to system engineering specifications. If problems show up during this test, there is a very good likelihood that the system has problems that will affect the end user.