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I do the same thing at one of my GMRS sites. I had a commercial LMR system (452.xxx) and combined our .650 repeater via a duplexer and isolators. In all reality if you look at a real transmit combiner all it is is a filter of some kind, alot of times the same exact filter that a duplexer is made of. My RX combiner is the same as I filter 457.xx and 467.xx only.1 point
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I've only seen VHF/UHF splitters/combiners, didnt know they worked in same band. But we be getting off topic, The more we learn each day1 point
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I see even the cheap $29 MFJ duplexers are advertised as a splitter/combiner. Seems reasonable that a high quality duplexer would, too.1 point
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Interesting to hear Corey, I would think that would still cause distortion in the RF signals when they hit the antenna. I know combiners exist (That is after all how trunking systems work) but I didn't think a duplexer would be able to do the same job.1 point
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As long as the duplexer covers that frequency range you can tune it any way you like. I have tuned a duplexer to work like a combiner for 2 transmitters. Works great as long as you include isolators in your design.1 point
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not at all. All duplexers use 1 lower frequency and one upper frequency. It doesn't matter which one is TX and which one is RX. All that matters is that those frequencies are isolated from one another which is what a duplexer does.1 point
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A Word of Caution - Posting Personal Info.
WSBY419 reacted to rdunajewski for a topic
What do you think about adding a private forum here just for registered users? It should be used sparingly because we want the search engines to index all the posts with excellent information so others can find us. I do think it would be nice to have somewhere to unload some members-only info though. Sent from my SCH-I545 using Tapatalk1 point
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