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
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.
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?
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?
@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.
You might want to use 7/8 inch heliax to eliminate feedline loss. Not cheap but you will not loose any power on that long run. You might be able to use 1/2 heliax for a cheaper alternative but you must look at the feedline loss for the frequency you are using to make the best decision as to cable type.
So this looks like a Cellwave notch duplexer with six cavities, great for up to 50 watts. Too bad that Rigol does not have the capability of creating presets for each phase of the tuning process. It would make the job so much more easier. Now with the advent of SDR receivers and transmitters why can’t someone create a SDR based service monitor with spectrum analyzer on the cheap. I have an IFR 1200S that needs to have power supply boards recapped. Just a minor inconvenience at the wrong time.
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
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.
Excellent video - thank you for posting this.
Does this require the -TG model or will the dsa-815 model do this as well?
What cables are you using on the Rigol
When will you get some more of these in stock
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?
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?
@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.
You are always going to lose power in the duplexer.
You might want to use 7/8 inch heliax to eliminate feedline loss. Not cheap but you will not loose any power on that long run. You might be able to use 1/2 heliax for a cheaper alternative but you must look at the feedline loss for the frequency you are using to make the best decision as to cable type.
db to dbm how to change setting’s ?
To tune a duplexer you got to sing to it first, it will resonate in harmony with your tuning rods.
So this looks like a Cellwave notch duplexer with six cavities, great for up to 50 watts. Too bad that Rigol does not have the capability of creating presets for each phase of the tuning process. It would make the job so much more easier.
Now with the advent of SDR receivers and transmitters why can’t someone create a SDR based service monitor with spectrum analyzer on the cheap. I have an IFR 1200S that needs to have power supply boards recapped. Just a minor inconvenience at the wrong time.
You'll have what's called a what? Reflected wattage? I don't want to say what it sounds like you're saying. But seriously, I'd like to know.
Hey