ARC-5 frequencies

Hello,

I have recently installed the MIG-15 module and one thing I can really not get to work is the ARC-5 radio navigation system.

When I turn the switch to modify the frequencies range, the switch rotates to every three positions but the indicator remains blocked only on the first frequencies range (see pics).

Am I missing a point to enable the two other frequencies range ?

Thanks for help

That switch to the right of the green light should be on Compass, is it?

Radio Compass Mode Selector to КОМП= COMP (Auto Compass mode)

Hi Britchot,

Yes indeed the correct position is on Compass. But I tried all positions as it did not work (even shortly earlier today).

But I found something useful I think. After testing the system on an airborne start, everything worked well. So I pondered about what might have gone wrong on the ground.

And the most plausible answer is, I think, electrical power. I have noticed that if you do not respect the procedure with electrical power, you may ruin the battery, and indeed, in that situation I was unable to change the frequencies, again.

But if you do things in the correct order, and use properly the gound power supply, everything works...

So I think this thread can be set as SOLVED, yet who knows, it might help other people having the same problem as me.

And thanks for answering :thumbup:

No worries, I’m glad you were able to find something out. I use ground power on my starts so I wouldn’t have guessed that the battery could have been the cause.

And don’t forget to keep the engine RPM above 4000 or it won’t generate enough to keep the battery charged.

That being said, If I recall correctly rotating the switch in the real thing (sitting in one in the museum), the indicator was a strictly mechanical device connected to the switch, so battery power, or ground power, or Girl Power, or Power Rangers or whatever power should be irrelevant :D.

Looks like a bug / incorrect implementation then, but not serious issue.