Either term is equally correct. The prefixes di and du both indicate TWO, so it multiplexes two signals. A triplexer multiplexes three.
On 09-Apr-11 13:36, Gordon JC Pearce wrote:
On Sat, 2011-04-09 at 12:22 +1000, Andrew Rich wrote:
Duplexor = tx rx more than one freq Diplexor = rx only more than one freq
Not quite; a duplexer is typically used where you want to TX and RX simultaneously on quite close frequencies like in a repeater, and a diplexer is more commonly used where you want to TX *or* RX on two different bands.
So for combining a VHF and UHF aerial into a dual-band receiver, you'd use a diplexer. For separating the TX and RX frequencies at a repeater, you'd use a duplexer.
Gordon MM0YEQ (who is getting sick of having to tune 456MHz/461MHz duplexers)
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