Photo of the Collins 30L-1 as received:
Reference documents:
Collins 30L-1 on AM by Owen Duffy
Collins 30L-1 parts on KE9PQ.com
Collins 30L-1 parts from frr24 ebay store
Service Tips for the Collins 30L-1 HF Amplifier by W5LAJ
Care and Feeding of the Collins 30L-1 Amplifier
Collins 30L-1 Upgrades by Young Kim – K6HM
More from W5LAJ:
I acknowledge this is not an amp builders site. But I thought this might be fun. On the right is my “30L-4” built by my friend W5LAJ (SK). Inside is a Svetlana 4CX-1600B. Covers 160-15 meters, has an external power supply. He also built what he called the “30L-2” with a pair of 4CX250Bs (self contained), and a “30L-3” with three Svetlana 4CX-400s. Yes, he got three 30L-1 unused cabinets and put them to use. Pretty cool.