Repeater Bug

[RusAvakado]

Help! My rover cannot communicate with KSC. Two repeaters fly in orbit around Dune. The map shows that the rover is connected to the repeater, and the repeater is connected to the KSC. What's the matter?

[Gargamel]

Is the issue you cannot connect to the KSP from Duna, or that you cannot control the rover?  2 Relay satellites around a planet can't give 100% coverage, there will be blackout periods, so you might be trying to control the rover during these blackout periods.     If you cannot control the rover, there's a lot of resons why.   Some screen shots would help.

 

[jimmymcgoochie]

Common reasons for no control include, but are not limited to, the following:

• No connection. If the little probe icon beside the signal gauge is orange and there’s no signal strength, that’s probably your issue.
• No power. Check you actually have electric charge in your rover, because no power = no communications and no control either. If the probe icon is red and there’s no signal bar at all, this is probably your issue UNLESS you set ‘require signal for control’ in the game settings, in which case it could also indicate that you have no signal and the game correctly prevents you from controlling the rover.
• Probe core in hibernate mode. If you DO have a signal but the probe icon is still orange, that’s probably the issue as the probe must be in active mode to control it. Right click the probe core and toggle ‘hibernate’ to off (active) and that should resolve it.
• Mod interference. If you have mods installed- and you’re in the modded installs section so I’m guessing you do- then please provide a list of mods and your KSP version as something obvious might show itself. Log files are good too as they may reveal exceptions or errors in the KSP application that may be causing the issue. I’m thinking of RemoteTech or CommNet Constellation which both make a lot of changes to the communications systems, and possibly Near Future Exploration which adds some new mechanics around signal power, but there may be more I don’t know of or haven’t thought of.

Lack of signal can be caused by a few things:

• No connection between rover and relays. Check your rover’s antenna(e) are deployed and not broken, and that you have a line of sight to the relay that isn’t blocked by the ground. You may not have enough range, although this is more of an issue trying to connect back to Kerbin than between two vessels in the same SOI unless your rover is relying on a really weak antenna or even the built-in one from a probe core.
• No connection between the relays and Kerbin. This can happen if you only have the KSC ground station active and Kerbin is facing the wrong way, or because your relays are blocked by something else, or because they just don’t have the range- the distance between Kerbin and Duna varies considerably as they orbit and you’ll need three or four RA-2 relay dishes (with 100% DSN and antenna power settings) to get a solid connection at all times, or a single RA-15/RA-100.
• Wrong type of antenna used on the relays. They have to be relay dishes to be able to bounce the signals from other craft to Kerbin and vice versa, a direct antenna will not work. The stock relay dishes are HG-5, RA-2, RA-15 and RA-100, the rest are direct dishes. Every antenna, stock or from mods, will say what type it is in the VAB or SPH editors, so make sure you’re using the right type.