My easyTRX2/S shows the red “Error”-LED. What does that mean?

This can caused by a lot and you cannot say it easy. To solve the problem please connect by USB to your PC and open the Programming-Tool.

Under the page “Diagnostic” you can see the error.

 

VSWR exceeds limit:
The easyTRX2 / S measures after every transmission how much power was sent to your antenna(Forward power) system and how much of it comes back(Reverse power). The easyTRX2 / S use these values and calculated if your antenna is good or bad. An error is reported when the “Forward TX power” no longer is worth at least 3 times higher than the “TX reverse power”. You can find these values in our Programming-Tool.

If this happens, please check your antenna system and whether all adapters and connectors are properly connected.
A defect of the easyTRX2/S you can find out with the following steps:
1. Make a note of “TX power forward” and “reverse TX Power” if your unit is sent with attached antenna.
2. Now disconnect the antenna and wait for 6 minutes. If the values differ only low (about 30), so please contact our technical support.

How can I see if my antenna connection to the easyTRX works fine?

FAQ: Antennas >>>

It is not easy to give a limit for a good or bad antenna installation.

But here are some values which could be a guideline:

Fwd-Pwr Banten 1: 143
Fwd-Pwr Banten 2: 154
Fwd-Pwr Discone: 145
Fwd-Pwr no antenna: 34

Rev-Pwr Banten 1: 31
Rev-Pwr Banten 2: 15
Rev-Pwr Discone: 23
Rev-Pwr no antenna: 26

VSWR Banten 1: 4,6
VSWR Banten 2: 10,3
VSWR Discone: 6,3
VSWR no antenna: 1,3

Explanation of the table: When you start the Link2AIS program and look at the “Maintenance / Modem Data”, you can see the “forward power” (Fwd-Pwr) and the “reverse power” (Rev-Pwr).

1.) Please wait until the easyTRX has transmitted a message.
You can see that when the values are changing.

2.) Then divide the fwd-pwr by the rev-pwr values. You see that ratio in the VSWR-rows.
VSWF means “voltage standing wave ratio”

In the last row there is a value below 3 (VSWR no antenna: 1,3). That means it is bad. Of cause, because we had no antenna connected.

The other three columns show typical values, which are all perfect.

Conclusion: If the VSWR value is higher than 3, you have a good antenna installation and good cable connection.

I want to mount the antenna for easyTRX in the top of the mast e.g. 15m up – do you have any fixed solution for extension of cables?

With reference to the cable we did the following: The existing cable is already 5m long. We tested the VHF/GPS combination antenna with an additional 10 m long cable. At the end the total cable length was 15 m. The additional cable was a simple RG58 cable. It had a male TNC plug and a female TNC plug as extension plugs between the existing cable and the TRX. The plugs were crimped to the cable. This worked very well. All the satellites in our hemisphere were visible.Therefore we can guarantee a 100% working for a cable length of 15m with RG 58 But as you know as better the cable is, as better the reception and transmission will work.

I want to mount the antenna for easyTRX in the top of the mast e.g. 15m up – do you have any fixed solution for extension of cables?

With reference to the cable we did following:The exsiting cable is already 5m long. We tested the VHF/GPS combination antenna with an additional 10 m long cable. At the end the total cable length was 15 m. The additional cable was a simple RG58 cable. It had a male TNC plug and a female TNC plug as extension plugs between the existing cable and the TRX. The plugs were crimped to the cable. This worked very well. All the satellites in our hemisphere were visible.

Therefore we can guarantee a 100% working for a cable length of 15m with RG 58. But as you know as better the cable is, as better the reception and transmission will work.

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