WRKC935

An 'In the weeds" explanation of a trunked radio system, at least the MSI P25 version. The way this all works, at least at 700/800 Mhz, is every frequency is assigned by the FCC a channel number. These channel numbers are set in steps of a specific channel spacing and start frequency. With VHF it's not that way, VHF requires the channels to be programmed into the radio with TX and RX frequencies and the channel number is assigned by that programming. So as mentioned there is a 'control channel' that is effectively a data channel. All radios use this to connect to the system. When a radio is turned on it finds the control channel of the closest site and then announces it's presence. The system will acknowledge that radio and do one of three things. It will OK the radio to be on the system, it will deny access or it will if told to by the system admin send a stun / kill command to that radio and disable the radio. If the radio is allowed on the system, that system will process the radios request for access to a specific talkgroup. The radio talkgroup is remembered by the system and the site it's connected to. When that talk group becomse active the control channel will tell the radio to go to the specific assigned channel for the traffic and begin listening. It will pick the channel in b ased on a couple things. First is the standard round robin assignment. The next available channel on the site is used. But certain channels can be set to NOT use that talk group, so it can skip certain channels. It can also use lowest channel TX time to equalize the TX loading on each channel based on total time of transmit for each channel at a site. Now, since you didn't mention that you had to reprogram your scanner, your not hearing different conversations on a specific channel that was only for police previously, or any of the other stuff. I am gonna say that you are probably NOT listening to a trunked radio system. Back to the programming and channel assignment. When you setup your scanner, if it's 700/800, you will only need to put in the control channels and the stepping information. The scanner will know what frequencies are assigned to what channel numbers with that information. If they used VHF or UHF frequencies, you may / will need to program all used frequencies manually. Refer to Radio Reference for programming information on your specific system for more information

You are STILL not going to be able to have them on the same frequency if they are linked. In order to do that, they need to be run by simulcast controllers. They need a GPS referenced timing standard and frequency standard. There is a lot more to it than just linking them together. And I promise you adding height to your tower will be cheaper. Not to mention that they will need a stable connection between them. THe Internet ain't gonna do it, you will need s Microwave shot between them so there isn't the changes in latency (link delay) that is present in Internet linking.

OH,, PA's are FUN. Driving past the football team and yelling out " RUN FOREST RUN" in a really goofy way. Rolling up on a deer in the road and barking at it. They fall on their ass while pooping all over the place. "Driver, put down the phone and drive your vehicle" in some sort of official sounding voice can get the phone tossed in the back seat, hands at 10 and 2 and the guy or gal looking around for the cop car. I skipped the CB PA setup and went right to the 100 watt siren for a cop car / fire truck. The air horn function also works very well to get peoples attention. Siren function was disabled, but the radio pass through was also handy for sort of what the OP was talking about. Far as his situation. The 4 watt amplifier in a CB radio driving a single speaker isn't going to put out much audio over a wide area. Find a few tripods, get some horn speakers attached to those tripods and find a 70 volt professional audio amp to drive them. Speaker horns should be 70 volt as well. Then plug a mike into it and run some wires. That would be your best bet. A single point PA speaker to cover a wide area doesn't work for two reasons. First is that the level of sound in close would be too high if you wanted it to carry very far. Second is tied to the first, you don't have control over the surrounding noise, so it would need to be really loud to overcome the baseline noise. Spread out speakers that are not crazy loud will get you heard without scaring the deaf and dead.

Yeah, hams are fun when they end up with commercial radios. It is technically legal to program ham stuff in a Part 90 radio since they can basically use anything for a radio that will work on the frequency band they are allocated. For a long time they wouldn't program anything ham into radios at my shop. Then they figured they would have me do it since I was a ham. I wrote a 1 page agreement and instruction sheet for getting a commercial radio programmed with ham stuff. It basically stated that the owner was required to provide a spreadsheet with the column's that were laid out for TX and RX frequencies, TX and RX PL/DPL tones, channel alias, a column for channels in the scan list for the zone, high and low power and a couple other things. Then if they wanted anything commercial with transmit, they would need an MOU on letterhead from the person listed on the license or a chief or high ranking official with the agency or department that owned the frequency. The MOU's and the channel lineup would be kept on file and if a programming discrepancy was noticed that the sheet would be checked against what was in the radio. If it matched what was provided, they would need to pay to get it changed. We weren't going to be researching PL /DPL, TX frequencies or any of that. What was on the sheet was going in the radio. IF the sheet was wrong, the radio would be wrong. It set a price for a single zone with 16 to 20 channels. If multiple zones were requested, and it explained how to create the spreadsheet for that, it would be done on an hourly rate with one hour minimum. Which was at that time 130 an hour. I had a copy of it laminated and put at the front desk for the greeter / customer service person to have them read when they came through the door. It also had the contact info for the state agency that was in control of the state radio system and that they would need to get a radio ID from them and an MOU for the talkgroups they wanted if they were requesting access to the state wide trunked system. I already knew that they wouldn't issue ID's to private citizens directly and that some agency that was on the system would need to sponsor them to have a radio on the system, so that wasn't gonna happen. But when you establish a policy, and put price tags to it. It stops them cold. Oh, and we charged $500 for codeplug creation for a state wide system subscriber. Which is what we charged everyone else. Most of them would leave in a huff, a few would do it, and we were happy to have their money and their understanding of what they were going to get for it. I finally decided we weren't going to do anything with the ham DMR stuff or it would be strictly hourly rate to program with a 2 hour minimum. Because DMR on commercial radios when they want a bunch of group calls and crap takes a LOT of time to create. And the codeplug was a one off. What one guy wanted in his radio wasn't going to be in 100 radios, just his. The next guy would want different stuff in different places and it was all a big PITA so they were going to pay for it. And we didn't and don't program ham radios, if it didn't say Motorola on it, we weren't touching it.

I don't disagree, but I'm not sure where the lies and misinformation statement comes from. There are regulations on the books that restrict the stuff we are talking about. The FCC choosing to ignore the enforcement of those rules doesn't void them. And there are things that many of us do that violate those rules. The big one is running channels 14-22 wither wide band of in a radio that will not turn down to the legal power level. Then there are the guys with high power XTL's and such that don't turn their power down, running 100 watts on GMRS, either simplex or through a repeater. Hell, I will admit to the fact my one GMRS repeater is putting 75 watts out the back of it. Mind you it's going into a high loss transmit combiner, and that 75 in results in 18 out the other side. But it matches the receive very well at that level so I don't talk out farther than I can hear with mobile coverage. Portables can hear it farther than they can talk back to it, but that's a 10dB difference in power output causing that. And since it says NO LINKING I can't even add receive sites to equalize the portable coverage at this point. And again to your statement, who would know or care if I put up satellite receivers that were linked and voted back to the transmitter. The point is there are rules. You should at least TRY to follow them. Even if others don't.

No strawman to it. It might NOT have been what you were referring to, but I can promise you that even today with statewide 700/800 radio systems the ARES guys STILL 100% believe that they should have access to that system and every analog public safety repeater on the air. And it's not just the ARES crowd. The number of average hams that 100% believe that little blurb in part 97 about 'any means at your disposal' means talking to the Po Po is completely acceptable and expected. I had this discussion with a couple hams about 10 years ago. They were adamant that was what it meant. I had to talk to the FCC on business related stuff and ask them as a side question about it and that is exactly what they said. Ham operators can use any HAM frequency in the ham allocation during an emergency. But that was it. They went further to state that modifying a Part 97 (ham) radio was against the rules and at no time should a part 97 radio be used on part 90 frequencies. They also said that even if they were using commercial part 90 radios, that without prior authorization being issued that they would be in violation. They emailed me all of this and I actually printed it out and had it laminated and would stuff it in the face of the hams that were convinced they were authorized by the regulation to talk to the public safety dispatchers on their channels, from their personal radios, if there was an emergency. I run into this about once a month. Someone will bring a radio into the shop they want loaded with public safety frequencies they got from radio reference. Half of the stuff isn't even on the air any more. Hell, some of it I pulled from service. We just tell them that they need letters from the fire chief / sheriff / someone on letterhead with an MOU and we will be happy to program them in. Without the MOU in hand they get nothing.

Here we go with the 'I need to mod my radio so I can talk to the Po Po, just in case." This has been asked and answered many times. That rule means that you as a Novice ham operator can get on the Extra class frequencies if you hear someone there and ask for assistance in the event of an emergency. Hammies think it means they need to MARS mod every radio they have so they can talk to public safety dispatchers. And that's not it. YOU ARE NOT SUPPOSE TO HAVE A RADIO WITH PUBLIC SAFETY CHANNELS IN IT. So regardless of any means, you aren't suppose to posses those means to begin with. Ham radios are NOT Part 90 and are NOT to be modified except for MARS operation. Again, I am agreeing with Randy here. And still can't believe it. What is Joe hammie gonna do when he tracks down that evil deplorable wanna be that's operating on their beloved local hammie repeater? Are they gonna march up to their door and beat on it with their ARES badge and bandoleer of radios so they look like a dork version of Poncho Via? Are they gonna wear their ARES yellow vest and puff out their chest and with all that fake authority tell them to stop doing it? Or are they gonna really take it too far. Pull the guy out of his house and beat the hell out of him on his front lawn? Then find out it was his neighbor doing it as he's sitting in jail for felonious assault? Maybe he will send him an real official looking letter with the ARRL logo and even his local club logo demanding they cease and desist. Cause the FCC ain't gonna do much unless it's pervasive and they get LOTS of complaints

In this sort of application, there is something to be said for commercial radios. It was mentioned 'did I just bump the channel knob' and that's a thing if you have one. Personally I would be looking at a CDM750 for this specific application and dealing with the 4 total channels that can be programmed in it. I realize that as you travel track to track and races to race that others might be on the same channel and you might need to move. But 4 channels should actually be enough to have something usable for the event. Of course the high dollar race teams all have a licensed frequency, so they don't tend to have issues with others interfering with their comms. The other thing with a CDM750 or similar radio is the quality of construction. Race cars are not luxury sports sedans with leather and adjustable 'comfort systems'. They beat you and vibrate and generally are a rough ride. I remember the difference in my Camaro just building in the cage and tying the subframes (unibody 2nd gen). Even with the mostly stock suspension system the car suddenly rode more like a log wagon and less like a pony car. And the solid motor mounts didn't help much either. CDM750's are dirt cheap since they are only 4 channels. No one wants them, they all want the CDM1250s and 1550s. I would be interested to hear how that radio holds up in a purpose built race car over time.

Does the radio work on other repeaters? That is as good as a watt meter for testing if the repeaters are similar distances away or the one that does work is farther.

Yep. me too. I understand doing it as needed. You never know who is on the other end and what ability to hear they may or may not have. Or if they can understand my voice. SO if they ask, I will give the call phonetically. But not every time. I got screwed by the FCC with a ham call of KB8VUL... now I get a TON of people thinking it's KD or even KE8.... but the VUL part, yeah, that's just a mess. So I do slow down giving my suffix. And it gets butchered a BUNCH. Now if I am on HF and trying to get a contact together for LOTW or something like that then I try really hard to let them know the correct call sign. If I am on the FM repeaters.... na. The only call sign you are REQUIRED to know per the FCC is your own. There is no requirement for logging contacts any more.

So there it is. Control, and the fact you have none. And other GMRS operators trying to move in on your woman. Maybe it is effecting things in the bedroom. Maybe I shouldn't have gone there. NAAA, your a control freak and want ALL GMRS users to conform to your interpretation of the service. That ain't happening. And worrying about guys that use phonetics for their call signs as a rule... your concerned about them? They ain't seen female reproductive parts since they were born and women don't speak to them like that unless they are getting paid to do so. That's who you are worried about. There are little blue pills for that if you aren't taking care of things yourself to the point those people are a concern. Because it is now an AOL chat room. It's being used as a social communications platform, like it or not. If you don't like it, call the FCC and turn them in. They will laugh at you same as we are. And they will do NOTHING. And telling me to take MY repeater down.... again, keep hoping, but I will tell you that ain't happening either. I invite all users and all types of traffic to my machine. If YOU don't like the content, the channel knob is right there on the front of your radio. Go elsewhere.

Well, I am with Randy,,,, yet again,, and this REALLY needs to stop. You are going to find clowns that think they are calling for the release of nuclear weapons from NORAD when they get on the radio. And that sort of operational technique does need to be called out so it can be corrected. This can be done politely, by gently reminding the operator that their call sign as issued is WRKC935 and NOT Whiskey Romeo.... you are operating on an FM repeater with good quality audio and the phonetics are not needed. Or, 'YOU AIN'T CALLING FOR THE RELEASE OF NUCLEAR WEAPONS YOU CLOWN. STOP WITH THE FING PHONETICS ON THE FING REPEATER AND TAKE YOU SORRY A DOWN ON THE HAM BANDS WHERE THE REST OF THE CLOWNS ARE HOLDING COURT.' One of course is a bit less direct than the other. And occasionally the phonetics are needed from the guy that rattles his call sign off like he's selling cattle at an auction. Of course, 'HEY DUMBSHT, this ain't a Barrett Jackon auction and you ain't selling a Superbird. You wanna repeat that for the rest of use that don't speak auctioneer?' Again, the phonetic route in this case is probably better. Depends on if you own the repeater or not, and if you want anyone using it or not. Do that on someone else's repeater, especially to the owner of that repeater and he might decide that you need to tune to a channel other than his and kick rocks.

Why do I catch this nonsense first thing in the morning and feel compelled to even bother to say something? First off WTF are you talking about? Are you referring to someone putting out there call sign on a repeater to see if others are also on the repeater? You answered that question in your own before anyone else ever could, THEY ARE BEING SOCIAL It's sort of HOW THEY CHOSE TO USE THE SERVICE. WTF do you care? You decided to post about it here so it must really effect you. Do you loose sleep at might over it? Does it plague your dreams? Is effecting your performance in the bedroom? The cure for any and all of that is tuning your radio to a channel without a repeater and turning off the scan function. Then you will NOT hear those pesky SOCIAL GMRS users calling out their ID's morning noon and night being social. And Randy, if you are looking for a topic for a video how about No being a TROLL

I will agree with Randy (OffroaderX) and others. Don't put all your egg's in the GMRS basket. But I think the off road guys will agree, more is better. IS GMRS good for off roading, yes, most likely. But it can't be the only radio or method of communications in your rig. A CB radio is a great addition, and possibly a ham radio, if you have the motivation to get the license. But, repeating what others have said, A Garmin InReach is going to be king. But you need to understand the differences in what and who you are calling, and what level of 'emergency' you are in the middle of. A flat tire, if you don't have any ability to change it is a problem. If you are in a creek bed and there a flood warnings then it's an issue. If your rig has flipped, and you are stuck under it in the creek bed and there is a flash flood warning, then you need IMMEDIATE assistance. That's the InReach, forget GMRS and all the rest. The other thing to consider is are you wheeling with others. As many have said, never wheel alone. And that's really sound advice. But it's not always reasonable, or we sometimes choose to ignore it for whatever reason we can come up with. We don't know your rig, setup, or what level of extreme wheeling you are doing. Trail running on groomed trails is far different from rock bouncing in Moab. And we don't really know how remote you are running. If your trails run behind family homes that are occupied all year long, it's not the same as there being one cabin in the woods for 5 miles in any direction that while could be broken into in an extreme circumstance for shelter, would otherwise only be occupied one week a year during some hunting trip. Gauge what you are doing with what you are needing. Ultimately it's cheap insurance to have more than you need than not enough communication ability. And even then, the InReach, as far as I know, will work anywhere at any time. Something else to consider as well. And this goes against the historical thought process. T-Mobile is now partnering with StarLink to offer cell service via satellite. That might be an option worth considering as well. The phone of course should have some app on it that will pinpoint your location via satellite, like your GPS does. Again, something below the InReach. You have to understand that the InReach is like calling 911 without saying anything. They just send people to that location and they will come quickly. Inreach has some text function, but it's mostly a distress beacon. A 911 call will generate a similar response, but with more information being given to the 911 dispatcher, they can send a proper response to the actual situation. If they don't know what or who to send, everyone gets sent, and it's treated as a life and death situation.

Again, where are you placing the surge suppressor's? They typically are inside the structure, either directly mounted to or wired to a ground bar located right at the entry point. Surge suppressors are a serviceable item, so they need to be exposed to be replaced after they fire and short. Not wrapped in putty and tape outside. Where do you come up with this crap?