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#341: Ham tip: Safely using a coax switch to connect multiple rigs to a single antenna system

Duration: 10:19Views: 27.3KLikes: 1.8KDate Created: Oct, 2021

Channel: w2aew

Category: Science & Technology

Tags: nanovnaantennatektronixantenna switchisolationcoaxswitchradios21measurecoax switchham radiotekw2aewhf

Description: This video answers the question - "Can an antenna switch be used in reverse, to switch multiple radios into a single antenna system and, is it safe?" The answer is - YES, in most cases - as long as the switch grounds the unused inputs, which is usually the case. The video takes a look at the numbers, describes how much isolation is needed, and then shows how to measure the isolation using a NanoVNA, and finally shows the results using a couple of HF radios. Notes from this video are here: qsl.net/w2aew/youtube/coax_switch_isolation.pdf

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