VHF 6 Cavity Duplexer for Radio-Tone Repeater 136~180MHz SGQ-150D 50W. 136~180MHz. This frequency space of this duplexer need to be larger than 3.8mhz, it can not be tuned with split less than that. For example, if the low frequency is 140.00mhz, the high frequency need to be at least 143.8mhz.
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