Ni signal

[Herbie56]

I'm using an Ambrogio L200 Evolution on a roof of a parking garage. We are encountering in different zones a "no signal" message. The cable looks good /4.2 ohms). Firmware 27-4-2009.
Any expereance with a bot on a roof or similar "no signal" alarms?
Thanks for help !

[LawnBotts.com]

Is your transmitter flashing green and orange? If it's solid green check the perimeter wire for a cut or corroded splice.

[Herbie56]

Hi !
Thank you for the tip !
I checked the light. I have flashing orange and green signal. The cable has an impetance of 4 to5 ohms. That should be ok.
The wiring is still complex and I have only problems on the roof (iron concrete) with about one yeard between garage roof and lawn.
On the pen land the bot is working well. I unpuged all radio units like wireless phones to have a crean singnal. But still the same problem. One thing that is very strange is, that the problem zone is moving slightly to the sounth.

Thank you for all the help !

Herbie

[LawnBotts.com]

You have a unique case being on a roof top and interference could be the problem. You may want to consult your dealer about the issue. There are some options they can try like change the frequency of your mower, perhaps boost the signal plus more.

[Herbie56]

Thank you for your answer! The strange thing is, that in the first year of the mower (2007) the system was working well. In 2008 was just some smaler issues. Since last year we have sports, where the signal is very bad. This blind spot is moving slowley to the south.
We unpluged all transmitters like WiFi wirless phones etc. - the dealer tried to change frequencies.

But I'm not sure if he changed the signal strength. I'll ask him to do so.
Do you have a tip for "more" ?

[LawnBotts.com]

A signal booster is normally used for wire lengths over 2,000 ft. If the problem is getting worse every year, I would be inclined to check the splices if any. Some corrosion could be causing the signal to get weaker. Also check and clean all the connections from the transmitter to the base.

You could try updating the mower's firmwire to see if that helps as well.