WHAT'S IN THE BOX
- All Trig products come with a two year warranty, starting from the day of installation
- Installation Manual and Operating Manual - contained on Trig USB
- Installation kit (frequency database sample file - contained on Trig USB)
- EASA Form One
FREQUENTLY ASKED QUESTIONS
Is the Trig stack radio a plug and play retro fit radio?
The Trig stack radio is not a plug and play product. The radios offer features such as, stereo intercom and support for stereo music. To exploit these features some re-wiring is required. However, the radio is shorter, lighter and comes with a Trig tray to make replacement of an existing radio as practical as possible. The installation manual provides wiring information on legacy radios to help configure the installation.
How does the 'Push Step' feature affect 8.33kHz tuning?
The 8.33/25K push step does not affect the mode of the radio. You cannot turn off the 8.33 capability. The push step is only changing the size of the steps when you are tuning. It's there to make tuning faster – 4 times less turns to reach your desired frequency.
For example, if you tune to an 8.33 channel, then click the push step to display the small 25k symbol, then you are still transmitting and receiving on the 8.33 channel you selected, only the size of the tuning steps changes for when you next turn the tuning knob.
How do I create my USB frequency database?
Each radio is shipped with a Trig USB stick. This contains full instructions for the product in the form of the User Manual and Installation Guide - TY96/96A /TY97/97A.
The same Trig USB is used for uploading a frequency database, that you create. Each stick contains a sample database file. A PC or laptop is required with a USB port to configure and load the USB stick.
Once the USB is plugged in, open the CSV file that is saved on the memory stick. This file can be opened with either a notepad or spread sheet application, such as Microsoft Excel. This file has a few sample frequencies already saved. Follow the same convention and add all radio channels that you would like. The Trig USB enables you to create a unique database for yourself. You can save up to 250 frequencies on your Trig stack radio.
Alternatively you can create a frequency database at https://www.trig-avionics.com/support/trig-radio-database/
How do I load my database from my USB onto my radio?
Once you are happy with your database, save this to your memory stick. To load or save this to your radio, you need to put the memory stick into your radio’s USB port when the unit is turned off.
Only when the radio is then powered on, it detects the USB stick and will offer to save or load your database. If there are data entries already on your radio you will be offered the choice to replace the whole database, or add entries from the USB stick. Similarly, if there is already a database on the USB stick you can either overwrite it or add the radio data to the existing file.
To return to normal radio operation, remove the USB device and switch the radio off and then turn it back on again.
In normal radio operation, the USB port is powered off.
Can I link this radio to my GPS? To push frequencies to SBY?
Yes – You can use any GPS system that can push this information using the Apollo SL40 protocol($PMRRC)
Can I play music through this radio?
Yes – The Trig stack radio has a dedicated stereo music input. This has its own independent volume control and can be set to automatically mute on inbound transmissions.
Can the TY96/97 interface with my existing audio panel/external intercom?
Yes – The Trig stack radio has a dedicated mono audio output for interfacing with standalone audio panels/intercoms. Full details of these connections can be found in our installation manual with examples for the most common units.
Can I use CS-STAN to install a Trig radio?
Trig has created a CS-STAN document to help with your TY96/TY97 installations in EASA aircraft. To find out more about how to use a CS-STAN document – click here.
If I am required to comply with the ICNIRP public limits for my aircraft radios, what do I need to do?
The ICNIRP is the International Commission on Non-Ionizing Radiation Protection, and they have proposed limits on the amount of radio frequency energy that the public should be exposed to. These limits cover every transmitting source, from TV stations to 5G mobile phone masts, and includes aircraft radios.
Because the amount of energy that reaches a body is a function of the distance from the transmitter, and because we know the transmit power of our radios, we can work out the safe distance that must be maintained to meet these limits. Fortunately, the average power of our radios is low compared to most broadcast transmitters, and therefore our safe distances are very small. For any Trig transponder, although the instantaneous pulse power is high, the duty cycle and the total transmitter-on time is so short that the average power is well below the 10 W applicability limit for ICNIRP, and therefore your transponder is not affected by ICNIRP.
For our VHF radios, although you probably don’t transmit all the time, it is certainly possible to exceed the 10 W limit. That is even true for our 6 W rated transmitters - because the ICNIRP limit takes account of the antenna gain and directionality, and the field strength can be higher than the nominal power. You therefore need to consider the safe distance for these radios between the transmitting antenna and any member of the public. The actual safe distance will depend on the transmitting antenna configuration, but we have calculated the distances for conventional aircraft antennas.
Allowing for typical antenna cable losses, for our 16 W radios, such as TY97 and TY92, the safe distance is about 1.8 metres or 6 feet. For our 10 W radios, such as TY96 or TY96A, the safe distance is about 1.51 metres, or 5 feet. Finally, for our 6 W radios the distance is about 1.17 metres, or 3 feet 10 inches.
You can see that none of these distances will affect members of the public near to your aircraft in flight, or even whilst operating on the ground. The definition of “general public” also does not include the pilot of the aircraft, or anyone involved in operating the aircraft – they are assumed to be aware of the risks, and to have taken an informed decision to participate.
The “general public” however, does include passengers. You therefore need to consider the orientation of the passenger seats in relation to any transmitting antenna, and the extent to which they are shielded by the cabin structure and by any ground plane provisions. For many metal aircraft the construction means that the occupants are naturally shielded from transmissions, making this less of an issue. For other types, you may need to perform more analysis. Solving that is outside the scope of this FAQ. for information about the ICNIRP see www.icnirp.org