What is a duplexer and how do you tune one?
I've tuned a lot of duplexers over the years. Since we install duplexers in our repeaters and sell duplexers as part of our system packages, I often get asked about them. How do they work? What are they used for? And how are duplexers tuned? To answer these questions, W2AEW, just put out a great video where he answers these questions and more. If you're interested, I encourage you to watch this video.
All the best,
Ron, KC0QVT
9 comments
Do you have experience duplexer tune with Aeroflex 8800s digital radio test set tool?
Is there a difference between the spectrum analyzer and the tracking generator for the duplexer tune?
I have a duplexer that was tune 467.6750 462.6750 it was to be on 462.550 467.550 how hard would it be to put on 462.550 and 467.550 it cant be that fare off what can I do to use it .?
Great work, thanks for the video
You might want to note in your video that when using a notch cavity duplexers you can’t use receiver preamps.
Like the Ar2 communications series preamps. The GaAsFET preamps are excellent devices, you just can’t use them with notch duplexes.
I’m glad you explain the difference between duplexers and diplexer. This drives me nuts when people (and even the manufacture) get it wrong.
TXRX makes (in my opinion) the best duplexers ….period! They are BpBr.
As a retired Motorola Sr. Field technician of 25 years I’ve tuned/worked on one or two duplexers!
Mark A. Lacy. W5TXR
PG 00043435
The duplexes training video was very good. My radio club has a dual stage duplexer in each direction, a total of four cans. Consider doing a training video on this type of setup in the future. Very good job.