WRTA578
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Posts posted by WRTA578
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Just scored 500' of this for free to try out with 6 N Connectors hopefully it performs well
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I appreciate all the input here on this subject ... my main concern was if stacked or the side by side version was better? one would assume that the side by side may be more efficient of a radiating pattern but i do not know... I had considered many options and I have and are using a Fiberglass antenna at one location it is by far not crap... but I know it is not optimal but was what was in budget 1 year ago.. now that I have help and others wanting to help and contribute I want to move forward to something better.... with a total of 5 repeaters I own all TKR-851's I want to try and fill the gap around NE Iowa and NW Illinois... As for the duplexers the other gentleman pointed me to on Ebay... I sent a message but they are listed at 3Mhz split and while it is a savings will they be as good as TXRX? waiting on his reply if he can tune them and maybe discount if I purchase 5 then it is an option.
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I have an ARiUSB 4 radio interface... question 1 will any DB9 to DB25 adapter work hooking to a Kenwood TKR-851? and which PI should I use?
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overall I am above all terrain but some spots only 20' above a hill so backside of that area could be affected for an HH but most Mobile or base units shouldn't be affected
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This is the duplexer I am ordering and of course using 1/2 Heliax cable and the actual repeaters are Kenwood TKR-851K units
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These are the 2 designs both the same yet different just curious which will have the best overall reception... both locations are only 60' towers however one is 810' ASL and other is 799' ASL
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That will work bt being LMR400 and foil wrapped still I wouldn't use it... I would go with a Heliax Cable
"All HELIAX coaxial cables are jacketed for direct burial or for corrosive environmental conditions. Standard jacketing material is weather-resistant polyethylene suitable for use in extreme climates."
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30 minutes ago, tweiss3 said:
Yes, I tuned my duplexer with the PC app, and turned the resolution up as high as it goes (refresh rate takes a hit, but its not an issue). I then took it to a friend that had the shop equipment, and it left his bench untouched.
You are likely looking at very small changes to be made. You can move the screw less than half a turn until it pops out one side, then move it till it pops out the other, and end up in the middle of those two locations. It may be as little as 1/8 turn or less. You do, however, get the concept and did a decent job for a first go around. Will it work as tuned? Yep.
Thank You for your input.... Tuning a duplexer was something i steered away from for my whole life but thx to Cheap NANOVNA's and You Tube i was able to tackle it... I have 7 repeaters i bought at Gov Auction TKR-851's and all have duplexers I have tuned 2 for 462.6 and 2 for 462.7 so if a failure its a fast cable swap and in goes a whole new repeater.... still waiting on linking hardware so i can link my 2 running repeaters to make my group happy.... now if i could understand how to have 2 repeaters with duplexers on 1 antenna then i could offer to separate systems to my users
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6 hours ago, tweiss3 said:
The level of isolation is pretty good. It looks on the top side that you could align the the cavities a bit better, they should show only 1 combined dip. Similarly for the bottom, it appears only 1 of the cavities needs aligned with the other.
I am using a SAA-2N NANOVNA with the Nano VNA app for PC the notches vary from 85ish to 103ish i have tried to get them tighter but i believe my resolution just isnt good enough was just trying to save $200 for tuning from the shop I do like that my S21 was able to get to -0.96 so 1DB loss i assume for transmit and receive which is way better than my Chinese flat pack that is -2.3DB just wondering if you think it will be an improvement over my current installed Chinese Duplexer
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First time tuning one on my own so asking the Experts in here is this OK? I know I am not using a 15K piece of equipment to tune it but is this OK as is or should i take it to a radio shop and see if we can deepen the notches more? its an RFS flatpack
Node Connection
in Technical Discussion
Posted
I can connect to the IL Statewide Node and hear traffic with my repeater but it will not send outbound traffic from my repeater... I used the CONNECT button not Permanent Connect what is it that could be wrong ... I can connect with my other repeater image and works perfectly so why would it have an issue on MYGMRS?