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Showing results for tags 'swr'.
Found 12 results
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I have a 2011 STVS and would like to know if I can use another CB radio that has a built in SWR meter to adjust the antenna for SWR on my Royal Star. Thanks Bob
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Hi all, I'm a bit stumped. :confused24: I recently upgraded my '86 to an '89 and am working through the bike making sure all is alright. The bike was missing the tip of the antenna so I'm trying to "fit" a new tip. I cut an antenna about 20" thinking I can step it down until I get the SWR correct. Hooking up the SWR I found that the reading is pegged past infinity. I started troubleshooting but have not found any obvious issues. I'm now stumped as to what to check next??? Items done: 1) SWR : it is pegged off the scale on ch1, ch40 and ch19 :confused: 2) Antenna mount has continuity to the negative on the battery. 3) The antenna when removed form the mount it has continuity from base to tip 4) the cable has continuity for the center conductor to the antenna mount post 5) the cable shield has continuity to the antenna mount body 6) there is no continuity between the center wire and the shield 7) tested with the matching box both connected and bypassed After this effort I was thinking on buying the stuff for the Marshal Mod but I'd like tofigure out if the CB is good or not prior to sinking the $$ into a new antenna setup. Any help or thoughts would be greatly appreciated. Thanks, Mike
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I installed a firestick antenna. To tune it I disconnected the cable from the antenna that goes to the radio and hooked it to the SWR meter so I have the cable running from the radio to the SWR meter. I then took the jumper cable that came with the SWR meter and hooked it to the SWR meter ANT connection and then to the antenna. Following the SWR meter instructions I then set the switch on the SWR meter to FWD. I then pushed the PTT button on the bike . The directions say to adjust the meter until it hits the set on the fare right of the meter. When I turn the knob all the way to adjust the needle it doesn't even move up to the 1.5 mark. A long ways from the SET mark. What am I doing wrong or does my CB not work. Any advise would be appreciated Thanks Norm
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I put the SWR and watt meters on the CB antenna cable today. I did not expect good readings on the stock antenna. Especially with the short little cable and RCA jacks it has. A good SWR is below 2-1 a really good reading is below 1.5-1. With the short cable on the stock antenna I was anticipating some very poor readings. Perhaps in the 2.5 or 3-1 range. So I was psyching myself up to have to purchase an aftermarket antenna and cable. On both channels 1 and 40 the SWR tested at below 1.2-1. Wow. No antenna adjustment needed. No new antenna needed. No new cable needed. So then I checked the power output. These units are rated at four watts. I tested mine at 3.85. Close enough. Very surprising. I am much happier with the stock units today than I was yesterday. Funny how that is. Mike
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Giving mad props to my home slice Bummer. He's good peeps. Ok now that I got that out.... I want to thank Bummer for helping this past weekend with getting the SWR adjusted on my firestik cb antenna and also for the connector on the firestik am/fm antenna. I was amazed at how easy it is to adjust the swr. Time consuming (especially if you mount the rubber ring on the underside of the antenna bracket ), but easy. Hopefully will be able to pay it forward to someone else soon. Heard some interesting stuff on the cb on the way to work this morning. Guy not happy about a Hopper not being cleaned out apparently. Oh yeah and like you suggested I did call diamondr. Patti said she will check the shop for an extra pin. They did have one and is sending it to me. Jerry.
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Hi CB experts! My CB has been nothing but a headache from start to...well...I haven't finished yet. Broken antenna, bad squelch and volume pots, SWR meter issues and now tuning problems. I installed a Wilson Flex 3' antenna with tunable tip. I like it better than the Firefly (or did like it better) because the Firefly is much fatter, achieving it's light weight by being hollow. I like the thin-ness of the Wilson aesthetically. I have the 203EZ folding mount. My bracket looks different from some I have seen and I think was adapted off something else. I modified it to move the antenna backward 3", placing it above the very back edge of the RH saddlebag so it the lid wouldn't bang into it when removing. The cable was already on the bike. I am intending to use a Firestik AR-1 duplexer/splitter. Went to tune it this morning, thinking this would be a slam dunk - just mess with the tunable tip and be done. Wrong! I was measuring with the splitter out of the loop, just the CB and antenna. SWR was super high, above 3 on all channels, but a little higher on 40 than on 1, so I lowered the tunable tip. Improved slightly. Finally removed the tunable tip entirely and got readings of 1.7 on 1 and just under 3 on 40. Ch 20 was somewhere in between, in the low 2's. Huh? What gives? Now I know that JB (lonestarmedic) used the same antenna on the same bike and got 1.5 at channels 1 and 40, I have something unique going on. I've studied this on the web, and here's what I already checked: - Bracket ground has 0 ohms to bike frame. Supposedly high SWR is caused by a bad ground plane 90% of the time. - Just for yuks, I added a ground wire from the bracket to the frame and SWR improved slightly, 1.5 on 1 and 2.5 on 40. The same happens if I hold the bracket with my hand. - Cable has continuity in the center and in the shield, but no short between the two - like it should be. - Putting splitter in the circuit made it worse - SWR way over 3 across the board. - Performed measurements in an open space. - Connecting the Wilson's "matching transformer" lead to ground made it worse. This makes sense. I don't understand this feature, but Wilson says it will lower the center freqency by 20 channels. My center frequency is already too low; I think it's below channel 1 in fact. - Tried removing fold-down mount - no change. - Double-checked how to connect and use the meter. So where do I go from here? Do I need to start removing material from the tip of the Wilson, even though it's supposed to have the full tuning range in the adjustment? What else? Frustrated, Jeremy
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The CB antena wire goes into the black box under the trunk where do U connect the meter to adjust the SWR Gambler:15_8_211[1]:
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Has anyone successfully installed a J&M handlebar CB on their RSTD. I've been working with a friend and fellow member here to install one of the units on his Tour Deluxe. It was fairly easy to install but there is an incredible amount of engine noise in the system. To the point of being unusable. Initially we connected the power through a relay triggered by the aux accessory wire under the seat with the ground directly to the battery. After contacting J&M they suggested not to connect directly to the batter and to tie the positive lead into the tail light circuit and the ground wire directly to the frame. We did that also and it made a slight improvement but the noise is still very annoying. The SWR has not been set and J&M says to set that also. Woud the SWR have any effect on picking up engine noise? I am not a radio expert but that seems unlikely to me. I would be interested in others experiences with this system. Thanks, Dennis
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Marshall Gammon was kind enough to send me this diagram showing how to properly use hook up a SWR meter if you have done the Marshall Mod to your radio. I am attaching two files. One is a regular .jpg file but the reduction in size makes it a bit hard to read. The other is a .ppt file. Very good quality if you have PowerPoint. If you don't know what the Marshall Mod is, here is a link to Marshall's page. http://bludolphintravel.com/gmg/marshallmod.htm Thanks go out to Marshall for the excellent diagram. 14145.ppt
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Marshall Gammon was kind enough to send me this diagram showing how to properly use hook up a SWR meter if you have done the Marshall Mod to your radio. I am attaching two files. One is a regular .jpg file but the reduction in size makes it a bit hard to read. The other is a .ppt file. Very good quality if you have PowerPoint. If you don't know what the Marshall Mod is, the attached document will explain it along with instructions. I've uploaded it as a word document as well as a .pdf file. Whichever you prefer, they are the same. Thanks go out to Marshall for the excellent diagram. Marshall Mod .pdf Marshall Mod .doc
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I would like to find a fellow venture rider in Central TX, who has an SWR meter and would be willing to help adjust my CB. BikerJohn
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I could spend a lot of time here typing various opinions and etc. about antennas, coax, connections, etc. The fact is though, there are smarter people with me who have already done it. One of those is Firestik Antennas. Great information regardless of whether or not you have that particular brand. Good articles on setting the SWR, Antenna selection, ground planes or lack of the same. http://www.firestik.com/Tech_Docs.htm Here is a great site regarding coax that was forwarded to me by George S. http://www.qsl.net/g3yrc/coax.htm
