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Collins 30L-1 DVD
This is a complete guide on DVD to the Collins 30L-1 HF amplifier. A widely copied design, the L-1 is still one of the most reliable and cost-effective HF amplifiers available. Topics in the 1-hour DVD include safety, updates, operation and maintenance of this great amplifier. There is also a discussion of the 811A triode amplifier tube used in the equipment, because not all of them are suitable for use in the Collins amplifier.