swiss_lipo 发布于2018年3月5日 发布于2018年3月5日 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
Britchot 发布于2018年3月5日 发布于2018年3月5日 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) [sIGPIC][/sIGPIC] CPU - Intel 8088 @ 4.77 MHz; Memory - 128KB; 360KB double-sided 5 1/4" full-height floppy disk drive; 10MB Seagate ST-412 hard drive JG-1 MiG-21bis Checklist
swiss_lipo 发布于2018年3月5日 楼主 发布于2018年3月5日 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:
Britchot 发布于2018年3月6日 发布于2018年3月6日 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. [sIGPIC][/sIGPIC] CPU - Intel 8088 @ 4.77 MHz; Memory - 128KB; 360KB double-sided 5 1/4" full-height floppy disk drive; 10MB Seagate ST-412 hard drive JG-1 MiG-21bis Checklist
Akatsuki 发布于2018年3月6日 发布于2018年3月6日 And don’t forget to keep the engine RPM above 4000 or it won’t generate enough to keep the battery charged.
Art-J 发布于2018年3月6日 发布于2018年3月6日 (已编辑) 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. 本帖最后于2018年3月6日，由Art-J编辑 i7 9700K @ stock speed, single GTX1070, 32 gigs of RAM, TH Warthog, MFG Crosswind, Win10.
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