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Showing content with the highest reputation on 04/06/23 in all areas
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Without being more specific a complete list would span DECADES of approvals and that could be over a 1000 units.3 points
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I just posted the results of doing SWR sweeps on both the CA-2x4SR and a Larsen 150/450/800 on my truck yesterday in that other thread. I also have two triband base antennas on my house and I swept them as well. Here are the max SWR values on each band: Antenna 2m 1.25m 70cm GMRS MURS 6m Diamond V2000A 1.3 4.1 1.42 1.43 3.1 2.55 Comet CX-333 1.4 1.1 1.76 2.2 4.6 The CX-333 is a 2m/1.25m/70cm antenna and does well on all three of those bands. The SWR is above 2:1 at 151 MHz and well over 3:1 on 154 MHz, so not usable for MURS. SWR is between 2:1 and 2.2:1 at both 462 and 467 MHz so not great for GMRS but probably OK for limited use. The V2000A is 6m/2m/70cm. On 6m SWR starts at 2.55:1 at 50 MHz but is under 2:1 from about 50.65 through 54. I have mine tuned so the lowest SWR (1.12:1) is around 53 MHz. SWR is good on GMRS simplex and repeater inputs and is under 2:1 on 151 MHz but up around 3:1 on 154 so would be usable on some of the MURS frequencies. As others have stated, you are not going to find one antenna that will do "6m, 10m, 11m (CB), 2m (including MURS), 1.25m, 70m (including GMRS frequencies)". You also have to keep in mind that 2m doesnt "include MURS" nor does 70cm "include GMRS"; the frequencies are enough different that an antenna resonant for the ham bands may perform very poorly on MURS/GMRS. There are a number of local hams who use the IMAX-2000 (which is a CB antenna) for 10m so that would be an option for those. Diamond also makes a 6m/10m vertical. One unrelated comment ... you must not be using "LID" the way I understand it to mean. Hopefully you aren't one! ?3 points
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I always say "breaker 575 anybody got their ears on out there"3 points
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Making me jealous2 points
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New LID Question
WRWS304 and one other reacted to SteveShannon for a topic
I would suggest that you get some experience and education before building a rolling NSA station designed to cover every frequency. There might really not be any need and by adding all of the frequencies and limiting the number of antennas you want as bristles on your vehicle, you are constraining yourself to compromises somewhere. Why do you want to cover MURS? Why do you want to cover 1.25m? Are they truly important to you? Do you need to transmit on them all or just be able to monitor them? Especially for mobile use you probably don't need to cover that much. In any kind of communications plan for emergency use you will probably want to restrict your activities to one or two specific frequencies or you stand the risk of never finding someone. Another thought is that there are antenna systems where you swap out the element to concentrate on a single band at a time. They are available for 80 meters through 6 meters and can even be combined for greater versatility. They're sometimes called Ham Sticks. Shark is one of the vendors carried by Gigaparts: https://www.gigaparts.com/nsearch/?lp=SHARK2 points -
If you use too broad of search terms, it's usually times out. Like if you just fill in part95e and hit search. Eventually you will get lucky though and it'll come thru. If you refine the search a bit more it usually works better.2 points
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Are you testing power AT THE ANTENNA, or just off the back of the transmitter? How long is that coax? https://kv5r.com/ham-radio/coax-loss-calculator/ 50 feet of Belden RG-8X, with a 50W transmitter, at 465MHz, with an antenna SWR of 1.25:1, LOSES 63% of your power (50W transmitter -> 18.7W at antenna) Replacing the Belden with LMR-240 (an RG-8X equivalent) only loses 47% (26.7W at antenna). Belden 9913 (low-loss RG-8) nets 29% loss (35.6W at antenna); LMR-400 (RG-8 equivalent) 27% loss (36.3W at antenna) Don't even consider RG-8X for 100ft cable runs at UHF. You would need an antenna with 9dB of gain to counter the coax loss.2 points
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Don't hate on me folks for posting those pics! These were done with a NanoVNA, which is certainly not a precision instrument but is close enough for hobbyist use!2 points
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General GMRS question
WRTG259 and one other reacted to OffRoaderX for a topic
...just please.. for the love of Xenu, do not do it in the middle of a conversation - wait for them to finish.2 points -
Well, the install isn't done yet, but I am pretty excited. I figured I would share as I make some progress. I am at about 35%-40% complete after about 8.5-9 hours of labor. I guess over the next few weeks, I'll try to finish up, but it's going to be a lot of labor to finish running wires and to do some custom interior work.1 point
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I just bought two Baofang GM-15 Pro radios and have been trying to program at least one repeater channel and have not been able to do so. The manual leaves a lot to be desired on instructions which are poorly written. There are features on these radios which are not covered in the manual such as DIY (?) channels. Or how to change the power out from Low to High Watts at the appropriate freqs. I found out how to do this by chance. When it comes into entering a new freq to program a reapeater Chanel there is no menu listed in the menu for the input of a New Memory freq, "enter these two numbers in the menu " which is the only way to enter new data and the wrong menu pops up....worse yet you do get the correct menu item and enter lets say, the offset freq, and the radio says "denied " Never have I seen instructions so poorly written for step by step input of data into a radio. I had three other friends try on a Zoom meeting to help program these radios and we as a group could not get the radios to accept all the data needed to program one reaper. I ordered a programming cable with the correct chip in it and I'm hoping I can use these radios in the field soon.1 point
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is the CCP Baofeng spying ??
SteveShannon reacted to WRUU653 for a topic
Let’s go with that. That’s a good first instinct.1 point -
is the CCP Baofeng spying ??
Kyler reacted to OffRoaderX for a topic
Did they explain how the radios hack into and connect to a WiFi with a password? PS - I am not only a Navy Pilot, but also an Army General, so you should listen to what I say.1 point -
Or keep buying those lotto tickets. If you wait 20 years the APX model you want today might be a bit more affordable when you find it on eBay.1 point
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Rightfully so. If it was an apx8k series down right heart attack territory both in sticker shock and joy. Update. Spoke to the owner, will not let me borrow the cable, he uses on the xl series (newer line) as well as th3 xg series part of the reason they are expensive. He said he is very protective about his harris cables. But we will meet up to enable bluetooth programming. Configuration on the radio has to be enabled, so it needs the serial programming cable. I like this radio more and more. Till I can afford an Apx. Which should be in about 20 years. Sent from my SM-S901U using Tapatalk1 point
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The Outbacker series uses movable taps to change bands... Probably less messy than hauling a golf-bag full of HamSticks. Unfortunately the Perth Plus appears to have been discontinued (I have one, along with the Alpha Delta OutPost tripod mount -- for years it was the only way I could get on the air from my apartment in Sunnyvale). The regular Perth only runs up to 10m -- the Plus included 6m and 2m. Some of the rest of the series have options that go up to 6m. Random searching... https://www.dxengineering.com/parts/cma-uhv-6 https://www.dxengineering.com/parts/dmn-cr8900a1 point
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1 point
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Show offline repeaters and Show Stale Repeaters
kmcdonaugh reacted to WRUU653 for a topic
My understanding is you need to log into your repeaters on the map site and it will update and it goes stale after the web page doesn’t see activity for a year.1 point -
Hagerstown area always listening
WRUU653 reacted to SteveShannon for a topic
Are you having trouble finding a club? It would appear that the area is pretty active. In May the Hagerstown Hamfest will be held: http://www.arrl.org/hamfests/the-great-hagerstown-hamfest-41 point -
Note that the first 3 or 5 chars of the FCCID are the manufacturer code, and everything past that is manufactuer specified, some use the radio model number like Retivus, some just number their grants, like Wouxun does just WOUXUN19,WOUXUN20,WOUXUN21 etc, the 935G is WOUXUN26 so your gonna have to look at the actual grant document (change results to html and you'll get clickable links to the related docs) to find any model number it relates to. You also may get additional results by changing the application purpose to one of the permissive change ones as they tend to get a change grant and not original grant on an existing radio if it's really not much different, like a 935G plus.1 point
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100 Watt UHF Search
marcspaz reacted to SteveShannon for a topic
And that’s with Belden RG-8x, which is quality. It’s a characteristic of the cable and proportionate to length, and it’s simply not possible that you would have a 50 foot RG-8x cable that doesn’t have much loss at GMRS frequencies. There are lots of accounts of really terrible performance from the cheap gray RG-8x or RG-8 mini from Amazon.1 point -
Vertex EVX-534
wayoverthere reacted to WRWM850 for a topic
I just checked out his eBay page I'm going to buy from him, thanks for the recommendation1 point -
1 point
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This one is the Kenwood KPG-95DGN V8.30. I think this one was modified, or I used a wide band install key forget which, to allow wide and narrow band FM since I can freely enter either one.1 point
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Toy to play with Harris XG-100P
SteveShannon reacted to tweiss3 for a topic
That is Kenwood's stuff. All the kenwood softwares allow you to program a codeplug without the radio first. BTW, RPM14 from Harris is very interesting. Take what you know about motorola and kenwood combined, and toss it out the window.1 point -
Toy to play with Harris XG-100P
SteveShannon reacted to Lscott for a topic
It looks like it's done on an individual basis. I haven't played with the software extensively but that seems to be the way it was intended to be done. The other thing is the radio comes in I think 3 different hardware versions. Due to the above I have sort of lost interest in getting one even if it's a reasonably priced used P25 radio.1 point -
Toy to play with Harris XG-100P
SteveShannon reacted to kidphc for a topic
Don't have the RPM software or cable yet. So hard for me to answer this. But from what I get. You would create individual channels to assign to a zone and a bank. I believe, but until I play with it, I can't answer straight forward.1 point -
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1 point
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Vertex EVX-534
Lscott reacted to wayoverthere for a topic
To the point of band split: if the model number (on the back of the radio behind the battery) ends in -G7, it's the 450-512 model, and -G6 is the 400-470. There is also a -D0 that is a vhf range (136-174, iirc).1 point -
despite what everyone on the internet says the slim jim antenna is just a half wave ~3dbi antenna and isnt that good. Its really no different in performance than a $10 abbree 42". You already bought a radio but height means a lot more than power. buy this antenna next and some KMR400 off amazon. If you have a tree hang the antenna in the tree 35-65ft up. https://www2.randl.com/index.php?main_page=product_info&cPath=2_1500&products_id=69428 every 3dbi you add it effectively doubles your power. 6dbi quadruples power. This antenna will give you +8.5dbi in UHF over the N9TAX. Its big at 17.3ft in length but its economically priced and very good. Coax power loss goes up as you increase frequency. At GMRS freq with say RG-8X you're losing about 2% per foot of cable. 100ft of RG-8X will lose -8.5dbi. You should buy LMR400 or knockoff KMR400. Which will lose 2.7dbi per 100ft. This antenna and coax combo would make your HT the same radiated power as the DB-25G while having far more receive capability. Get the antenna as high as you possibly can1 point
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Questions about wattage versus antenna in my situation
Lscott reacted to SpeedSpeak2Me for a topic
N9TAX MURS/GMRS with 16' of RG-58A/U and PL-259 connector, that I purchased a month or two ago. Antenna hanging from tree branch that is about 8' off of the ground. Scanned with a RigExpert Stick Pro. YMMV 148-156 MHz (covering MURS), 200 data points: MURS Channels 1, 2, and 3: MURS Channels 4 and 5 (Blue Dot, Green Dot): 440-480 MHz, 200 data points - this is a broad 40 MHz sweep, so accuracy suffers just a bit. The following three screen captures provide better data for GMRS: 460-470 MHz, 400 data points showing minimum SWR: Same as above, but showing rough center of GMRS repeater inputs: And GMRS simplex:1 point -
Tram 1486 for GMRS use and tuning of it
WRWR489 reacted to OffRoaderX for a topic
I just did what the words on the direction-sheet said to do - dont over think it.1 point -
I’ll second that. I got two from him as well. Being a customer has another perk, if you ask nicely he’s a good source for radio programming software.1 point
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General GMRS question
marcspaz reacted to SteveShannon for a topic
Exactly. "WROM258 looking for a radio check. Does anyone copy?"1 point -
General GMRS question
AdmiralCochrane reacted to BoxCar for a topic
I would follow the ham repeater protocol and just state <call sign> is monitoring, anyone out there?1 point -
GMRS license cancelled by FCC
WRWP844 reacted to SteveShannon for a topic
Yes, every word matters with rules, laws, lawyers and official forms. The letter never said a license was canceled. It specifically said an application was dismissed. But (understandably) the OP read it as “license was canceled” and used that as the title of the thread.1 point -
Mobile or base, you are likely going to need at least 2 radios (possibly 3), a diplexer and best case, 3 antennas, if not more. As far as antennas go, I am not aware of any antenna that 'works' on 2m, MURS, 1.25m, 70cm and FRS/GMRS. Definitely none that cover all that AND HF. My opinion, regardless of what base antenna and tuner combo you use, you're not getting a single antenna to 'work' on all of those bands. I've tried. With decades of experience and a massive network of smart people, it's just never happened. Sure, a tuner will make the radio happy, but it will be like a dummy load... it's not going to radiate.1 point
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Unsightly antennas are bad. Put up only good looking antennas, the more the merrier! Your cabin will be gorgeous, and an envy of all neighbors. Your mother-in-law will be glad and will brag about your antennas on her facebook! That's would be tough to cover these bands with one antenna. Tri-band 6m-2m-70cm antennas do exist, but lumping 10m, 11m and 1.25m would be difficult. Antenna tuners also exist but mostly down to 6m. I'm not aware of auto-tuner for 2m and shorter. If it exists, it's going to be expensive. There are manual tuners for 2m - 70cm, but KAF6045 mentioned losses in the coax. 11m-10m-6m could be covered with one antenna, 2m-MUSR-70cm-GMRS with another, and 1.25 is an outlier. Any antenna can receive, but if you want to transmit, you likely will need a dedicated antenna for it.1 point
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View your post -- three *** (dots) in upper right. Should be an edit option at the bottom of the pop-up menu.1 point
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I would just comment that the letter, and FCC database are using the term "Dismissed", not "Cancelled". That should have signalled that the license that had been granted was still in effect and that something else was being processed at the time. Dating that letter/action for April 1 sure doesn't help (though I could understand it as "start of next month")1 point
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New LID Question
WRWS304 reacted to SteveShannon for a topic
There are ways to minimize the number of antennas. I think you could get by with a couple of antennas but you’ll be compromising performance. But if you figure out where you want to concentrate your attention (which bands are most important) you can manage. An end fed half wave can work well for the HF bands without looking like a n NSA station. It’s just a wire strung up and blends into the background, but it stops at 10 meters. Or, if you’re willing to compromise performance a little more the Diamond BB7V handles HF and 6 m. There are many decent multi band antennas. I would look for one for 2 meters, 1.25 meters and 70 cm, like the Comet cx333, but @marcspaz has had good success covering GMRS with a Diamond antenna. Otherwise you’ll need another dual band antenna for MURS and GMRS.1 point -
What you are proposing wont work in GMRS. Its commonly done in the ham community but using different bands. IE uhf portable to mobile then VHF to repeater. A lot of ham rigs actually support this feature. In the LMR field it is done with a DVRS or variety of mobile repeater or extenders. Rarely is the "extender" in the same band. I have a DVRS in my truck and while it was used in the past since I got a BT mic for my mobile 90% of my traffic is on that when outside of the vehicle.1 point
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Well a short follow up. RT97 5W. New max range from the fish bowl. I raised the Antena 5' to what should be 25'9" plus or minus some inches agl. I managed to still talk to it from 5 miles. 731' ground altitude at 5 miles, repeater 600', ground +25', plus trees and buildings, per google earth pro. So for a low power repeater in a fishbowl I would have to say it works pretty well. It is certainly impacted by other radios around the airport area and some areas on the north hill (extended over 6 blocks more). Too bad It was not the RT97s. Maybe a few more watts could have cut threw some of the interference, but I sure would not know if it works like that or not. My simple tests show a best case of +1 mile on a 5' increase in height. Mobile 50W, past test 15W and 50W on same mobile antenna no range change @ 4 miles, thus to me that was the repeater height primarily and likely some power limits too. So anyone wanting 5 miles, these little 5W repeaters are very capable. If you want 5 miles and public, sounds like the RT97s is the one you might be able to spit out a call sigh as most say you should or must. Who knows if it is better when on a hill, but I would bet it is. Such a simple device to deploy.1 point