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Collins 18 S-4
I am looking for a schematic for a Collins 18 S-4. It is apparently a 10
channel 100 Watt tranceiver that was used in aircraft. I have two of them that have had the dyno's removed. They look pretty hefty with an 813 modulated for AM by a pair of 811A's. They have a removable cover on the front to manually change channels. It is simply a rotary switch with a screwdriver slot. The only source I found wants $75.00 for a manual for what is probably a $10.00 radio. Thanks all |
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