Hi All I've been offered a Racal 485-1, 1MHz frequency standard and distribution system. >From the photo it's basically a Racal 1MHz ovened oscillator with a 12 way distribution section based on TO92 style plastic transistors. I don't know that it's something I'd use these days as a lab standard but might be interesting just as a curiosity, and the distribution section does take an external input. I've never seen one before, nor even heard of it until now, so would be grateful for any information that might be available. regards Nigel GM8PZR
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