What Can You Do In a Vacuum? Build a Coax Switch Using Vacuum Relays by Jim Heath W6LG
Although B2B Russian relays were used, the smaller B1B relays are a better choice. The B1B relays can handle 5KW. The B2B relays are designed for more than 10KW. The larger relays were on hand, and so that what was used. The box is from Amazon and has the Vevor label. It was under $40 and well worth the price as it is water proof and built like a tank.
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