How To Tune a GMRS Duplexer Using the Rigol DSA815

Steven from Buy Two Way Radios demonstrates how to properly tune a GMRS duplexer with the Rigol DSA815. It is not recommended that you try this yourself without the proper equipment. If you have a duplexer that you would like to be tuned, don't hesitate to send it our way! Steven and Buy Two Way Radios have you covered. Hit us up on our online chat at
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#duplexer #twowayradios #howto #GMRS

[@PowderMill]

Great little video… Thanks! I try to never lend out expensive test gear to friends after I got back my HP/Agilent portable SA with a broken dc “barrel” type 5.5x2.5 mm connector. It cost more to have repairs made and for it to be recalibrated … Than a new entire Rigol SA w/TG. So, I bought one of them and assembled a “kit” with everything packed in a Pelican case. (UniDapt adapter kit / TeleWave 44 “no slug” watt meter, dummy loads up to 350w. and all sorts of pre-made RG400 cable assemblies) Now I can send the here to watch your video instead of getting stuck with multiple phone calls from my “I wanna get a GMRS repeater on the air and am too cheap to pay a shop to tune a duplexer” LOL

[@thonos1]

I like the idea of testing with a radio on the bench after tuning. Great video showing process of how it is tuned. Still have one of your XLT duplexers in use since 2021.

[@AllanteLexus]

Excellent video - thank you for posting this.

[@KA9DSL]

To tune a duplexer you got to sing to it first, it will resonate in harmony with your tuning rods.

[@USBP29]

Does this require the -TG model or will the dsa-815 model do this as well?

[@derekdauzat]

When will you get some more of these in stock

[@jorgezuni2818]

db to dbm how to change setting’s ?

[@davekeene5702]

What cables are you using on the Rigol

[@TractorWrangler01]

I am interested in setting up a 50-watt gmrs repeater. The antenna will be up at approximately 100 ft at the base. How do I get 50-watts to the antenna when the duplexer sucks up watage before it gets to the antenna?

[@BuyTwoWayRadios]

Hi, thanks for your question! To answer it, we would need more info on your situation. Where is your antenna located? Is it elevated at all or is it just a 100 foot antenna off the ground?

[@TractorWrangler01]

@BuyTwoWayRadios it's elevated. I have a higher piece of ground than most of the surrounding terrain, but I need to get it up another 100 feet to be above the tree tops.

[@mikant71]

You are always going to lose power in the duplexer.

[@klintcatalane.strom.skyway4807]

Hey