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Florida also has the largest linked NXDN UHF Ham repeaters in the country I believe. https://ni4ce.org/nxdn-digital-communications/
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WSGL775 reacted to a post in a topic: Just passed my General class test on Saturday!!!!
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SteveShannon reacted to a post in a topic: Password Expired Notice ???
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Hey folks, we are hosting a get-together on Sunday, July 13th starting at 02:00 PM at Carrabba's Italian Grill in Centreville, VA. We will meet in the main lot and spend some time socializing and working with anyone who may need some guidance on their gear. When everyone is hungry, we can head inside for some ice cold beverages and some food. As always, this will be a family-friendly event. Feel free to bring family and friends. Any questions, just post them below! https://www.facebook.com/events/744340581470568/?active_tab=discussion https://locations.carrabbas.com › Virginia › Centreville 5805 Trinity Pkwy Centreville, VA 20120
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Just returned from out of country travel and got the same smack... Was concerned but I change it....
- Today
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Question re: grounding for lightning protection
LeoG replied to WRTC928's question in Technical Discussion
16' between ground rods. Putting a coax in a glass jar etc. Lighting is going to do what it wants even with grounding. The grounding is a preventative measure to take care of as good as it can. There is no 100% it's going to follow any cable, it's the least path of resistance but because of the huge voltage potentials it can leave that path. Certainly better to have grounded the crap out of something than nothing at all. But it doesn't mean the lightning is going to go where you want it. I pretty much figure a direct hit is a death strike most of the time for equipment. Near misses is where the grounding really shines. -
WSIW871 joined the community
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Do a report to export them to CSV and then use Chirp to import them to your radio.
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Question re: grounding for lightning protection
SteveShannon replied to WRTC928's question in Technical Discussion
You’re wrong, Leo. Air, and what’s in it, is the conductor for lightning, not an insulator. There are better conductors and better insulators but ionized air is actually a pretty good conductor. But who’s arguing about a couple feet? -
Antenna mount for 2025 Jeep Gladiator Mojave?
Lscott replied to WRTC928's topic in General Discussion
I tried the Comet CA-2x4SR and the Diamond NR240CA on my roof rack mount. Both antennas are 5/8 wave designs and need a ground plane. When I tested them, just for fun, on the rack mount I didn't expect them to work for crap. Big surprise both worked rather well. Apparently there is enough coupling, likely capacitive, from the mount to the rack rail and car body to work. https://forums.mygmrs.com/gallery/image/613-nr240ca-roof-rack-mount-swr-and-photojpg/?context=new The steel band holding the mount to the rail has a sheet of rubber under it so there is no direct metal to metal contact. https://forums.mygmrs.com/gallery/image/473-close-up-of-mobile-mount/?context=new The SWR sweep for the Comet was very similar but with a bit higher values. -
Yes, but you asked how to stop those notices that appear at the upper level and the only way to do that is to change your password at the MyGMRS level.
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Question re: grounding for lightning protection
LeoG replied to WRTC928's question in Technical Discussion
Lest you forget that a lightning strike starts on average about 20,000 feet in the air and travels to the ground with air as an insulator. Arguing about a couple feet is moot. -
Wow,,,,, Checking the new report today... WRZC921 added 16 repeaters this week.. That's being very busy.. Hell that would take me a week just to add them into the database.. Is this for real??
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WSBW595 started following Base Station Setups...
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WSIP539 joined the community
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I am able to log into the forum with my current password. Thanks for the quick response
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Yes, change your password.
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Antenna mount for 2025 Jeep Gladiator Mojave?
marcspaz replied to WRTC928's topic in General Discussion
Just remember the corner caps are plastic. You should have the mount forward on the hood about 6 or 7 inches for a good ground plane. -
I just received this today it's getting very annoying I was tempted to change my password but thought otherwise lucky I didn't because I tried again to log in with my current password and was able to use my current password to login. Do anyone know how to stop these notices from popping up?
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KAE8433 joined the community
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Please disregard the post I sent on this issue I was able to sign into my account without changing my password
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Question re: grounding for lightning protection
SteveShannon replied to WRTC928's question in Technical Discussion
The rule of thumb is that the distance between ground rods should be twice the length of the ground rod. Anything less results in minimal additional protection. The wire is used for bonding, equalizing the potentials of the different ground rods, not carrying the full current of a surge. The nearby ground system takes the brunt of the current surge. A water jet might be able to do it, but maybe cutting the asphalt is easiest. -
WRTC928 reacted to an answer to a question: Question re: grounding for lightning protection
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Question re: grounding for lightning protection
WRTC928 replied to WRTC928's question in Technical Discussion
Okay. For some reason, I was thinking 8'. That's still a lot of ground rods for a 200' run. The code is a minimum. My thought was that for such a long run, a heavier wire might be preferable. If so, I'm okay with absorbing the extra cost. I can't think of any way to go under 30' of asphalt without cutting it. -
Question re: grounding for lightning protection
SteveShannon replied to WRTC928's question in Technical Discussion
Exactly. Best is to disconnect it before it enters the house. -
Question re: grounding for lightning protection
SteveShannon replied to WRTC928's question in Technical Discussion
If you use 8’ ground rods they should be driven every 16’. There’s no benefit from placing them every 8 feet. Code doesn’t require 4 gauge. It requires 8 awg. I wouldn’t cut the asphalt, but I would go under it. Burying the ground wire is fine, even preferable. Look at this document: https://reeve.com/Documents/Articles Papers/Reeve_AntennaSystemGroundingRequirements.pdf -
Question re: grounding for lightning protection
WRTC928 replied to WRTC928's question in Technical Discussion
My question really is whether it's safer to leave the antenna connected to the radio or to disconnect it. I assume a direct strike may fry the coax even if it's properly grounded. I can replace an antenna and coax; it's my house and myself I'm concerned about.