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Found 19 results

  1. I was looking at the signalstuff.com site and was wondering which antenna to get. Single/dual band? Connector? Using mainly for hiking in dense forest areas of the Olympic Peninsula in WA.
  2. At 12 miles out (level ground; the West TX Plains) to-and-from another SBB-7NMO antenna mounted 25ft in the air at my house, ... I made a Real-World Performance Test between the two antennas ... AND ... My OPINION is that the SBB-7NMO (without any modifications) performs better than the CA-2x4SR. I was using 5 Watts Transmission from a BTECH-GMRS-V1 and got clear transmits and receives ... The CA-2X4SR transmitted with some-static that the SBB-7NMO didn't have ... (Note: This test was made 3 times by switching-out both antennas to verify this difference). So, I decided to check the SWR on the SBB-7NMO antenna sitting in the middle of the roof of a 1999 2-Door Tahoe ... the results are as follows using the Low Power Setting with a BTech UV-50X2 ... (NOTE: BTech Specifications say 10watts; I'm showing 20watts on my SureCom SW102 Digital SWR Meter): ----------------------------- SBB-7NMO - No Modifications ----------------------------- 462.5500 GMRS 15 1.40 462.7250 GMRS 22 1.42 467.5500 REPT 15 2.00 467.7250 REPT 22 2.01 151.8200 MURS 01 2.09 151.8800 MURS 02 2.11 151.9400 MURS 03 2.13 154.5700 MURS BL 04 3.71 154.6000 MURS GR 05 3.73 146.5200 2M 1.10 446.0000 70CM 1.00 ----------------------------- I contacted a Comet Representative about what needed to be done to tune the SBB-7 Antenna for Dedicated GMRS use ... His reply was the following: I have 4 of these antennas and decided to take a chance of destroying one to find out IF some modificaton(s) would improve the SWRs. I found the following adjustments (or cuts) accomplished My Goal ... as follows: -------------------------------------------------------- SBB-7NMO - Rods Cut Lower-3/4" Middle-3/8" Upper-3/8" -------------------------------------------------------- 462.5500 GMRS 15 1.00 462.7250 GMRS 22 1.00 467.5500 REPT 15 1.15 467.7250 REPT 22 1.15 151.8200 MURS 01 1.45 151.8800 MURS 02 1.51 151.9400 MURS 03 1.54 154.5700 MURS BL 04 2.96 154.6000 MURS GR 05 2.99 146.5200 2M 1.54 446.0000 70CM 1.09 -------------------------------------------------------- - In conclusion, I have shopped around for quite some time looking for a High-Gain GMRS Mobile Antenna ... but ... without finding anything to my satisfaction ... BUT ... with THIS Modification, My Quest has Finally Ended !!! The GMRS Transceiver that I will be dedicating to this modified Comet SBB-7NMO Antenna is a BTech GMRS-50X1 which has 3 power settings 50 Watts, 20 Watts, and 5 Watts. Just for completeness, the Mag Mount that I am using with all of my antennas is the "TRAM 1267R 5 1/2" Magnet NMO Mounting with Rubber Boot" that I have purchased from Amazon. Happy GMRS'ing !!!, FWI .
  3. I am new to GMRS and trying to get back into the ham hobby. I was involved with CB overseas for many years but when I came back to the U.S. everything has changed including my memory. I am living in an association and or course antennas are not permitted. (Let's leave it at that). I am up in Farmington MN and there is a repeater about 2 miles as the crow flies in an open direction on the side of my house that my deck is on. I currently have a Wouxun KG-805G that won't reach the repeater from my basement window even though its a straight shot to the repeater. I just ordered a Midland MXT-400 for my truck but would like to base-station it until I can get my hands on a KG-1000G. I want to try and put up an antenna, on my deck, that is so low to the rail that it is very hard to see so that the association won't complain. I was thinking of a small yagi antenna to point at the repeater and would like to hear your opinions please. I chose the yagi for the gain and small size. Also, If I had to run 50 foot of cable what would be your recommendation for cable. Many thanks! WRMG216.
  4. So I see that Nagoya now has a 701G HT antenna that is supposed to be tuned to GMRS frequencies only. Anybody got ahold of one yet?
  5. I am a newbie working on setting up my ribbon slim jim inside my apartment as I cannot mount an outside antenna. Everyone talks about keeping it away from metal objects but how far away? I need to use the antenna in my kitchen which of course has a refrigerator and range that are curiously made of metal. I also would like to know which part of the antenna radiates. The top or the bottom?
  6. Greetings, New GMRS license holder here. I belong to a number of jeep and offroading groups who are going more and more to GMRS radios along with CB. Toyed with the Baofeng UV-5R for trails until I read up on it. Decided to go legal with a proper radio. My choice is one of the Midland MXT275 MicroMobile. The radio is the easy part as I have a good location for the head unit. The question I have is the antenna location, I'd like to use one of the X-Clamps Mounted on the right rear Sport bar using the 3db Ghost antenna. Since the roof itself is fiberglass and I run with it on during the winter and with a soft top in the summer or top down I was wondering if this would be a good location and not cause a problem with reception over a longer distance.
  7. I have a Comet Ss460sbnmo on a Nagoya RB-50 base. I was told to get this setup. But now someone mentioned it may not be suitable for GMRS and may damage my radios. I don't have an SWR meter yet. Can anyone enlighten me if this is a safe setup? And if not what NMO antenna should I get? Thanks in advance
  8. Greetings everyone, Ok, I don’t claim to understand everything associated with RF. Heck, there’s a lot of it that’s just plain over my head (pun intended). But this particular surprise has me totally baffled. I was several new dual commercial band antennas that I just received in case any tuning was needed and since my mind was set to “dual band” mode I grabbed this inexpensive, lightweight, low power antenna and connected it to one of the Dakota Alert MURS 2 watt base units and decided I should check it also. I don’t mind telling you I couldn’t have been happier with my SWR reading, 1.0-1.1 right out of the package. I had a HUGE smile and thought perfectly, finally found an antenna that needed no tuning, not even a frogs hair amount needed to be trimmed off. I went back to testing the other dual band commercial antennas with several different mobile radios and it wasn’t until I finished and started putting my meters, adapters and various odds and ends away that I realized what I had done. I had connected a UHF only (433 MHz specific) antenna to a VHF transceiver, not only that but I got a picture perfect SWR & power level reading using it n a MURS channel (154.570). My radio tech ALWAYS stressed that I should only use band specific antennas for the band they were designed for and by using a VHF on UHF and visa versa, So, why is this UHF antenna working spot on with a VHF frequency ? I have included a pic of the antenna I’m referring to.
  9. Hi all, This is my first post so please be gentle. I decided the family needed an alternative means of communication and started reading about the options, deciding on GMRS. I'm a total newb - bought the Midland GXT1000 3 pack and the MXT115 for my car (and just got my GMRS license). I'm doing tons of reading to learn about how GMRS works and this forum is awesome... but I'm having trouble here and on the web/youtube finding something that shows how to do a clean radio install for an automobile, more specifically, the antenna cable. Since I'm seeing the cable and antenna for the MXT115 aren't that good, I'll certainly be replacing them before doing anything destructive to my car, but are there any tips for doing this and/or good links that walk through it? I'm mechanically inclined so should be able to do this myself but if the answer is "take to a radio shop" I'm open to that too because what I don't want is to end up with rattles and noise because I didn't put panels back in right (though I do find sometimes that the care I take for doing various jobs is better than the pros because I do lots of research and *care*). That's a lot of words to ask about an antenna (oh, any recommendations on the antenna are also welcome) but figured I'd introduce myself too. Thanks all, Bob
  10. I’m thinking of a new base antenna. The ones that I have in mind are as follow. If you know anything of them let me know I will mount on a 40 foot pole. I’m only doing GMRS. They range from $190 to $900. Do you own any? I live in Wisconsin so I can pick up the first two but the third I would have to pay shipping. https://www.shopwiscomm.com/DB404-B-Commscope-Omni-Exposed-Dipole-Antenna-450-470-Mhz-59-db-P5783211.aspx https://www.shopwiscomm.com/MFB4605-PCTEL-MAXRAD-Fiberglass-Base-Omni-Antenna-UHF-460-470-Mhz-5db-P2179087.aspx https://www.solidsignal.com/pview.asp?p=1151-4n
  11. Greetings folks. I'm new here and to GMRS in general, but I'm glad I found out about GMRS. I'm trying to set up emergency back-up communications between myself and my wife, for those times when power, internet, and cellular are out especially. Yes, not often, but it has happened. (We're in Virginia and have lived through 36+ hour power outages due to hurricanes, etc.) My goal is to work towards simplex communications with my wife, but for now, I'll settle for a local GMRS repeater. Her office is about 3 miles away, and the terrain is fairly flat suburban area. I'm working (for now) primarily with handheld radios. BaoFeng UV-5Rs. I plan to upgrade to at least having a base transceiver at home. (One that does 2M and 0.7M HAM as well.) But, for now, handhelds. I have a GMRS license (WRFC813) and am sitting for my technician class ham license in a couple weeks. (I will NEVER get my wife to go ham, so don't go there. Hence, GMRS for the two of us, but ham for my own hobbyist fun.) So, that in mind, here's my issue... I can communicate with a nearby repeater just fine. That is, just fine from one of the handhelds when I'm outside my house. I also have a mag mount antenna on my car roof and can hit the repeater pretty much anywhere in my area. But, when I step inside the house, I often can't quite get there. I tried the car antenna (Nagoya UT-72) inside the house, and it doesn't seem better than the whips (NA-771). Then again, inside the house, I do not have a good ground plane steel plate on which to mount the UT-72... I literally step out the front door or back door onto my deck and I can talk with the repeater. Inside, not so much. Suggestions for a home antenna rig that will improve this? I'm in a HOA, so I really don't want to bother with trying to get permission from the crown to install an outdoor antenna. I have an attic crawl space, but if I'm going to go that route, I want to be pretty certain it'll work. My preference is something that can sit here in my living room and still be enough improvement of the NA-771 that I'll be happy. Perhaps better mounting for a UT-72? Suggestions? Thanks. Cheers, Ken (WRFC813)
  12. I think I've found 2 viable candidates for an antenna that will suit my needs (attic configuration due to HOA): - Comet GP-1 - Diamond X50A Any first-hand experiences here with either, good, bad, or otherwise? Price is similar. Diamond is a little longer. Both seem to get excellent reviews. One other deployment option is to run either antenna outdoors on my deck using a pole I can extend during emergencies. If I keep it low, but still outdoors, the HOA won't be able to see it and I won't need to worry about them. (To recap, I'm in northern Virginia in a fairly suburban setting. Terrain is largely flat with a few rolling hills. Primary goal is to be able to reliably hit a repeater in Alexandria, but my secondary goal is to be able to communicate in simplex to my wife at her office, roughly 3 miles from home. I can reach her now via repeater only. I can reach the repeater from home, especially if I step outside. Hoping to improve indoor coverage as well as simplex to wife.) Thanks. Cheers, Ken van Wyk
  13. Hey guys and gals! I've got a big pile of 90s vintage Spirits and Talkabout Distances. The antennas have all gone brittle, and are exceeding the point of effective duct tape repairs. There's a mixture of Spirits, model SV-22, running on MURS in blue and green dot, and Talkabout Distance and Distance DPS units. The antennas are all going, and the decay is accelerating. I like handing these out to nontechnical family members, because there's not anything they can screw up other than changing the channel unintentionally. But RF burns are a bad thing, so ... Help me pick out some antennae, please! Ideally, they'll be visually distinctive; Motorola's latest ones are stamped with UHF and VHF, which is nice, but I'm open to third-party ones and have a mild preference for silicone jacketing. Thanks!
  14. We have a 40w Motorola repeater and I've got an ANLI-100 antenna about 15' over the house, connected with 50' of LMR400 cable. It's on a metal roof, the house is at about 3000' ASL. In the immediate valley, pretty much with 'line of sight' - but with dense foliage, they're around 2200'. I haven't measured SWR, do not have a SWR meter, but I think it should be close enough to work even considering the line loss and slightly out-of-band from ham dual band VHF/UHF antenna. When I first got repeater, in the winter time, without leaves on most trees, It worked well and as expected. I could go about 4-5 miles away... Now, in the summer, with very dense foliage, I can hardly make it a few hundred feet away! There is both a very steep elevation change, as this location is in mountainous area, and very very dense foliage. In my research, it seems that a "circular polarized omnidirectional" antenna has been tested and used successfully by Motorola - a long time ago - with use in UHF frequencies. I'm looking to see if anyone has experience building an antenna like one of these "cycloid dipole" antennas for the GMRS frequencies? https://ka7oei.blogspot.com/2013/08/a-circularly-polarized-omnidirectional.html http://www.wa7x.com/cycloid_info.html Anyone have helpful thoughts on if this would improve reception for me, in the foliage?
  15. I have a repeater, Motorola 50 watt, cellwave 6 cavity band pass notch duplexer - 38 watt output after duplexer. My brother now has a repeater 50 watt Motorola with vertex standard 6 cavity notch duplexer. Our frequencies will be about 14mhz apart. mine - 462's and his - 448's I use dx 400 max coax with a slim jim He will use lmr 400 not sure about antenna??? Looking for some opinions about antenna spacing??? I have a vertical 20' pole mount on the 20' roof Should we flip a coin and see who will be low man on a vertical split totem pole???? and how far apart? or can we go horizontal with another mount??? I've heard of two repeaters sharing an antenna... but commercial repeaters set ups by bridgecom... Any recommendations??? thank you 301
  16. I am sure that this has been asked a hundred times before, but now it's my turn. I need communication in a 50 to 60 mile radius from my base. Terrain is piedmont/upstate area of South Carolina, so mainly flat with some hills and small towns. I think GMRS will do what I need, but I need suggestions on equipment, tower height, etc. Looking at a budget of around $3,000.00 to $4,000.00 with 4 or 5 mobile radios. Thanks for your help.
  17. Hi guys, I'm a newbie when it comes to 2 way radios in general, I've done a lot of reading educating myself and I have learned a lot, The first thing I did was to get my GMRS license, here is the deal... I have a pair of vertex 160u that I use to communicate with my daughters (too little for cellphone plus is more fun) when I go to the grocery store or to my uncle's house located about 1.50 miles away from my house, the radios work well. I just bought a Kenwood 805d to get a little more range but I need help choosing an antenna , power supply and any connector and cable I may need, if you guys could help me with some advice I would greatly appreciated. I know is not going to be easy, that is what makes it fun. Thank you. William.
  18. Hi all. Need some help. New to the forums and i am thinking this is a good place to get some guidance. I have a Kenwood TKR-820 repeater that has been set up and tuned for GMRS 462.550/467.550. It is a turn key system and does not need any configuring by me. I also have a Comtelco BS450XL antenna that has been tuned for GMRS with a center frequency of 465.550. http://www.comtelcoantennas.com/PDF/BS450XL3.PDF Now to bring this altogether i need some solid guidance on what kind of feedline to use to connect this to the repeater. I need to know what kind of lightening surpressor i might need to use. I need to know anything that would help me successfuly mate the antenna and repeater together for a reliable station. The antenna will be mounted on the side of my house on a mast. It will be 26 feet above the ground. The antenna height is what it is and can not change. The feedline length between the repeater and the antenna is no more that 40ft and probably closer to 30 feet. I live in FL so its pretty flat. Not a Rocky Mountain in sight. Any help you can provide would be much appreciated. Regards, Kris
  19. OK, being new to base station and repeater building I have a very important question. What is the best way to ground a fiberglass antenna? To explain my setup: I will be installing a gable antenna mount which has a 6' extender pole on my single story home. The antenna is 3.7ft tall for an overall height of approximately 24.7ft above ground level. My location is 177ft above sea level which puts my antenna 201.7ft above sea level. I am on a hill which is at a higher elevation than a lot of the surrounding area. There are nearby trees which will extend to higher altitudes than my antenna. The antenna itself is grounded with a DC ground, but I need to know how to tie this in and create a proper ground. I do not wish to damage my home or radio equipment because I ignorantly installed my ground. Any and all help/recommendation is appreciated.
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