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mpoole

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  1. On my Wouxun 805-G, I'm seeing a lot of busy channel screens on channel 15 & 23. When monitoring channel 15, I'm hearing a tone about every 15 minutes that must be coming from another radio (like a CWID tone). The rest of the busy channel notices have no modulation at all. I'm 70-80 miles from the nearest repeater using channel 23 (550) that is listed in MyGMRS but close to some Over-landing areas at Jocassee Nat'l Forest who I hear occasionally. A couple of questions: I do not see a menu item on the 805 radio to turn off the busy channel feature like the B-Tech GMRS-V1 has, does it not have the ability to turn it off? Should the busy channel feature open my squelch if the setting is "1"? I'm running a Vertex Standard 7000U repeater as well as my hand-helds listed above, no problems except for Wouxun 805-G. Ideas? Mike WRJE502 RMPOA 550
  2. I will look at this, may be good use for a junk duplexer.
  3. We are looking at this. If vertical separation isn't enough, we'll put the duplexer on the RX side only with a dummy load on the TX side and filter out the bleed-over. Should work fine and allow us with a full 50 watt TX instead of the 33 we were getting through the duplexer after being professionally tuned.
  4. Good info, just ordered a dummy load and will utilize this setup if I get bleed-over on the TX. Much appreciated!
  5. Running 1.85 currently as I'm using a dual tuned VHF/UHF antenna to TX. That will change with the move to another location and two GRMS tuned antenna. Hope to get below 1.5k SWR.
  6. Great idea, I'll utilize if I have bleed-over. Thanks!
  7. Thanks for this info. I've ordered a dummy load and will utilize this option if the 3 meter separation still causes problems. I'm currently running two antennas at 24' separation horizontally and have no issues at 50 watts. I'm not on a tower and in a wilderness area so I only have to cope with my own TX/RX.
  8. Thanks to everyone who responded to my inquiry, very good info here. I've just returned from taking the duplexer to a professional radio shop for tuning to 462.550. The Fumie duplexer still has a 20 watt lose on TX. It appear the Fumie is junk and the advise of the radio technician is to stay away from the cheap China duplexers.....all of them. His minimal recommendation was a ICOM at a cost of $395. I think I'm going to investigate using two antennas instead of a duplexer. As long as I have signal separation to prevent bleed-over it will be less expensive and provide full TX power from the repeater. We are moving forward to the next stage of our project. Thanks again for your support! Mike WRJE502
  9. Nice! I'm in a mountainous area at 2150 ft running a 50 watt radio. Because of a ridge interference that is 40 ft higher than my antenna I can't reach 1/4 mile in that direction. As such I'm moving my repeater to a neighbor's work shop that is 120 higher than I am. So yes, the higher the better.
  10. I'm using a SW-33 MarkII that has SMA-F fittings. I've check a GMRS Nagoya antenna that comes in at 4.5 on my hand-held. I've used the same meter to check a home made ground plain antenna tuned for 151MHz that tested at 1.06. I really think most of the hand-held rubber ducky antennas are pretty bad. I also took a Nagoya-771 that read at 3.5 and cut it down to get a 1.6 on GMRS channels but I had to cut it down to 1 cm......kind of ridiculous.
  11. Thanks for all the great information you guys provided. I'm taking the duplexer to a radio dealer to get it tuned next week. I will also have them check out the radio as they were a Vertex Standard dealer shop in years past. It will be an all day trip, but hey, road trips can be fun. Thanks again!
  12. Makes sense. If I get this duplexer tuned to 462.550/467.550 then I should see no power loss and the signal quality will improve? Thanks for your help!
  13. I recently purchased a used Vertex Standard VXR-7000U repeater and a Fumei Duplexer factory tuned to 462.000/467.000. The repeater is using 462.550 for community communications utilizing a Dr. Fong DBJ-UHF commercial antenna with 5db gain and custom tuned to 465MHz mounted 20 feet off the ground with 80 feet of Rg8x cabling. On my initial install of the repeater and duplexer, the SWR was 1.06 but wattage dropped from 52 to 33 using the duplexer. I started to notice the repeater signal showing a lot of static and quality lower than simplex TX with my hand-held radio. I rechecked the SWR this morning to find it now at 2.4 through the duplexer. My question to more experienced operators: Is it normal to loose 20 watts of power when using a duplexer? What would make the SWR change during 2 months of use? I have removed the duplexer and currently using 2 antennas, the TX being a Dr. Fong UHF/VHF DBJ-1 mounted on the opposite roof line of my house from the RX antenna. Any incites on how to address the quality issues would be greatly appreciated. PS....I do not have the equipment to re-tune the duplexer to improve SWR. Mike WRJE502
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