w2aew | #341: Ham tip: Safely using a coax switch to connect multiple rigs to a single antenna system @w2aew | Uploaded October 2021 | Updated October 2024, 10 hours ago.
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
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
