Hello All,
There is a Collins Radio 51S-1 receiver in very nice condition
available on eBay right now. This is a rack mounted receiver (51S-1F)
and has been fully checked out. In case anyone is interested, it is
item # 5881317911
http://cgi.ebay.com/ws/eBayISAPI.dll...MESE%3AIT&rd=1
Thanks.
Nanu