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The Kraken system is like a child's toy when compared to what federal agencies and the military have. Even the equipment we had in the 90's was still better than the Kraken. We had no problems triangulating exact Iraqi positions back in 1991. And don't think for a minute that the feds are not using that kind of equipment right now. Transmitting briefly is standard SOP when using any military radio and has been for a long time. Transmit too long in a combat zone and you will get a missile or artillery rounds down your throat.

I have the Btech RT50 and it has a full spectrum GMRS duplexer. It says it's rated at .25µV at 12dB SINAD. Can't say I can prove it but it seems to receive well for the antenna and it's height. This is the replacement duplexer they sent me. The originals sensitivity was much worse than the replacement. Tuned full band.

that was the idea when using the AN/PRC-90. I just missed the AN/PRC-103 that was a pretty good improvement. There was a movie about a downed flyer. There radio discipline was pretty terrible and had they used the radio as much as they did in the movie it would have died or the flyer would have. The north Vietnamese knew what frequency to monitor.

All I got was a card and love from my family.

find a big huge round ground water tank and splatter your signal everywhere as you drive in circles around it .

It might be difficult even for a few krakens to locate FRS/GMRS radios especially if there are many signals on the same frequency. Lots of "ghost" signals that keep moving around. Maybe 3 airborn detectors triangulating with high power optical recorders might be able to do the job quickly. And I don't doubt they have such a system. But with lots of radios out in a relatively small area it might be difficult to lock on a single tranceiver and even harder to hear a single transmission in a sea of similar signals. Don't use a roger beep or any identifying transmission.

Transmit briefly and move frequently.

This! Absolutely nothing unusual about the results.

You need to look out for those krakens...

Unless your UV-5G is different from mine, it can't be changed from the radio. It requires editing in Chirp. The Shift-D set to "Off" is the same as blank in Chirp, which is the setting for simplex transmit.

And that's what I was talking about as well. Did you not see me mention FM in my post? Go back and read it again in case you missed it. And I also said that I know of three people who are using it in their dump trucks. So, someone (3 people actually) is using it.

Not Radio related but i got myself a 4Bay QNAP and 4 16TB NAS Drives. That should keep me busy for a week.

I guess I can justify my LMr400 cable as a Fathers Day gift (even if I ordered it last week).

Some Repeaters, I.e. my Hytera's, can be set in programing for IP transport basically linking them. Many Commercial repeater radios can also do this.. Although not legal in GMRS many commerical repeaters can be set in this fasshion but requires like systems.

People epoxy sheet metal to the underside of toppers all the time. And that works fine for a ground plane. Having good contact between the NMO mount and a sheet metal ground plane is what matters.

RG8X has around 86% loss over 100 feet while LMR400 has around 48% loss over 100 feet. Plus the fact that the center conductor, insulations (dielectric) and shield braid are bigger with LMR400 which helps reduce loss. @WRDJ205 your real world measurements are close to what most online coax loss calculators will show. While a j pole is not the best antenna, they work just fine. I've seen enough home made UHF j pole antennas built from solid copper wire that works well. No they won't have as much gain as other designs but nothing wrong with a J pole.

I do the same. I was just curious what bandwidth problem he thought we would be out of compliance on

It depends on the agency and what equipment they have available to them. I know that 20-30 years ago, we had equipment in the military that could triangulate a transmitter quickly. Even today's systems such as the Kraken SDR can pinpoint a transmitter fairly quickly, and two or more Krakens in different locations and the time to pinpoint a location goes down. One Kraken will get you pretty close and do so in a reasonable amount of time. 2 Krakens will do it quicker and with more precision. Three or more Krakens will be even more accurate and take less time.

The radios I have with GPS (Hytera) must be turned on in the program mode and programed how you want to xtmt/rcv GPS data. I can set GPS data to specific groups and not to other groups. If you dont have it set to send your GPS data to a specific group, nothihesng is sent, However i can set up in programing to receive GPS data from a certain group. . I have played with this but never really saw a need for it so i ignoree GPS in programing (off).. A local 4-wheeler group uses GPS in their readios to ping their locations when 4 wheeling.. Take note, Radios with GPS need to be 'like' radios as their GPS function are proprietary to the radio brand. My Hytera radios with GPS wont work with Motorola or ICOM and vis versa.

I set duplex to off on 8-14 so I can monitor them but not transmit. Should there be a legitimate reason to do so, I can pretty quickly restore the transmit capability on that frequency. It's hard to imagine a situation where that would be necessary, but I can do it if I need to. I just do all my GMRS communication on the other channels.

I dunno about everyone else, but I do it by selecting 20 kHz or 12.5 kHz when I program the radio, according to what's authorized for the frequency.

You more than likely may have a little Itty bitty wire strand shorting out to one of the connectors. Get a multi-meter and attached a probe to the center conductor and the other probe to the outside of the connector and set the meter for a continuity check and you should have either "OL" or 0.00 ohms for a perfect assembly of the connector(s). If you get any reading other than the aforementioned, you have a short. Or, your antenna is way out-of-band. Check the antenna with an antenna analyzer to determine the frequency center resonance. Who assembled the connectors? Where did you purchase thd LMR400 cable from? My first recommendation is scrap the J Pole and get a real professional grade antenna such as a Laird, Larsen, etc. and tune it accordingly.

Most radios have a physical off switch unlike phones which have electronic on/off switch. No power is no reception/transmission. They could sneak in a bypass resistor to keep the power on for the GPS.

Radios today are basically computers that transmit radio signals. If it has GPS it could store info without the user knowing. And as I posited a radio could include GPS and data storage the owner never knows about. And if so, it may not be possible to disable the GPS. And it would be quite possible to have it on even when the radio is "turned off". At least until the battery died.

so the car wash finally ate my nagoya magnet roof mount and mtxa25. which is wild since its been through several hundred washes. pretty sure an over agressive top roller got it and *yoink* go bye bye so its time to finally do a permeant mount . looking for a thru the roof option and i see two basic solutions https://www.amazon.com/Vehicle-Antenna-Installation-Extension-Kenwood/dp/B077P26SY3/ through mount with attached cable or something like this https://www.amazon.com/Anina-Connector-Assembly-Adapter-Mounting/dp/B0DFLMTLD4/ nmo->SO239 and just use a good quality pl259 cable with like a 90 degree adapter on it? i will be drilling the roof of both my silverado crew cab and a 2013 sonic hatchback and burying the cable under the headliner. am i missing a better option? any experience doing a mount like this - good, bad or indifferent? i do have steel offroad bumpers and could mount there on my truck, but i'd rather go thru the roof to get the antenna height, especially for around town when i dont have my MTXA26 whip on the roof and i'm running the little stubby. just trying to avoid losing *another* $50 antenna and $35 antenna mount, while not having to dismount it off the roof every time i wanna get a carwash also- i do have a fiberglass topper on the bed of the silverado, wouldnt be against mounting on there, but that would mean i'd need a ground plane of some type. i dont want to do a mount with the 3 ground plane stubs coming off it, and know that something as simple as a peice of metal (like even using a baking pan with a magnet mount for outdoor/non vehicle usage) can work as a functional gorund plane. would it be possible to mount said ground plane inside the fiberglass topper and have it functinal? or would it need to be external to be useful? Just making sure i'm not overlooking an easy option that allows me to skip drilling a hole in the cab of my truck if need be. TIA for all your feedback!