
tcp2525
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Everything posted by tcp2525
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If we didn't learn our lesson with all this during the COVID fiasco we never will. China should be the world supplier cheap trinkets and other toys, not medicine and food. We need to get our priorities straight before it's to late.
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That's sounds awesome! Maybe all of us will use this exercise as a friendly reminder that it's time to start weaning ourselves off of all this throwaway junk we are so heavily addicted to.
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And all this time I though hams were the cheapest people on the face of the earth. I never thought us GMRS'rs would beat them and throw a fellow member aside. Shameful.
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Does yours come with a signed COA from Harry S. Chung, the Minister of Commerce? This document greatly increases the value of the UV-82.
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I listed my original first edition Baofeng UV-82 on eBay for $350 since it's now a pre-tarrif classic..
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NOAA was working perfectly for me and I didn't notice any interruption of signal. I don't even think it is possible as they have to many redundancies built in.
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Nice!! now you're making progress.
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This is a common problem when you don't set your time zone to your location and leave it set to Beijing.
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While it's a good question and one that can be fun to ponder upon, I let the people that get paid to worry about these things earn their salary. Of course you'll always have your traditional forum creatures with way too much time on their hands worry about splitting hairs that nobody cares about.
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The point is it is uncommon, but it is a possibility that they are concerned about. Do they even know how to diagnose an issue of a pacemaker that was affected by RF? Bottom line, it's possible, but you might have a better chance of winning the Powerball jackpot. Here's on I cherry picked. Yes, pacemakers can be affected by spurious radio frequency (RF) emissions, but modern pacemakers are generally well-shielded, and interference is uncommon. Here's a more detailed explanation: Pacemakers and Electromagnetic Interference (EMI): Pacemakers are susceptible to electromagnetic interference (EMI) from various sources, including radio frequencies. Potential Effects of EMI: In the unlikely event of EMI, a pacemaker could experience: Stopping or irregular pacing: The pacemaker might stop delivering the stimulating pulses that regulate the heart's rhythm or deliver them erratically. Ignoring the heart's rhythm: The pacemaker might ignore the heart's natural rhythm and deliver pulses at a fixed rate. Asynchronous pacing: Some pacemakers incorporate protective algorithms that cause a temporary reversion to asynchronous pacing in response to prolonged inhibition from spurious signals. Modern Pacemakers and Shielding: Modern pacemakers have improved shielding and protective algorithms to minimize the risk of EMI. Sources of EMI: Radiofrequency sources: Cell phones, radio transmitters, and other devices that emit radio waves can potentially cause EMI. Magnetic fields: Strong magnetic fields from certain devices or medical procedures (like MRI) can also interfere with pacemakers. Interrogation Telemetry: Interference with interrogation telemetry (the process of reading data from the pacemaker) may still occur, especially with older pacemakers. 5G Networks: The risk of EMI between modern smartphones connected with 5G networks and pacemakers is considered low. Ionizing Radiation: Repeated exposure to ionizing radiation can alter electromagnetic components of cardiac pacemakers, leading to transient or permanent damage. Risk Assessment: An individual risk assessment is often necessary after pacemaker implantation, a change of its generator, or major modification of its programming settings. Avoiding Interference: Maintain a safe distance from strong electromagnetic sources. Be aware of potential interference from devices like cell phones, metal detectors, and certain medical equipment.
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Hey, you're a smart chap and you know Google is your friend. While I hate doing research for others I'll do it for you since I watched one of your YouTube videos and thought you were funny. Just cut and paste "are pacemakers affected by spurious rf emissions" and you'll find what you seek. The short answer is "most" aren't affected, but you don't want to be that one person that it does. There are also some other good reads on the topic.
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Simple answer is if the transmitting radio is FCC type accept you can be assured that the radio tested and its design has passed basic tests for such emissions. As for low powered transmissions, they can be just as harmful as the high powered ones if it is in close proximity of the receiving device. Some implanted medical device can be effected. On a side note: If your neighbor has her Lush inserted and turned on, spurious emissions can be loads of fun.
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Of course, if you're going to have multiple repeaters in this scenario they should be open to the public without restrictions, just as long as they follow good etiquette and don't cause interference. If someone want to drop a lot of coin to do this, more power to them. If one is smart about it and use their head they can get great high-end equipment dirt cheap. If you know the right people and have a streak of good luck you can get access to a good location and electricity and internet for free. I think the biggest problem with GMRS repeaters are the owners that have them closed to the public and not being used for years.
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Very nice construction and a good idea, and I'm glad you used an N connector instead of an SO-239 for prevent water from getting into your coax. One thing I can never figure out is why do so many people gravitate to copper for VHF/UHF antennas? I used copper to build a 6m 5/8 wave ground plane for my ham station at work 30 years ago. The only reason I used copper was because it was free and, of course, soldering is easy and makes a permanent weather seal. Many years ago, I made a 2m J-pole using 1/4" aluminum rod. Easily made and adjustable. Of course, 3/16th or 1/4" rod would be a better choice for UHF than 1/2" or 3/4" copper pipe, which is 5/8" and 7/8" OD respectively, as it wouldn't so broad-banded reducing what little gain you would have with a perfectly built J-pole.
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Never accept failure when the power of getting the ultimate base setup is in easy reach. If all the great innovators and inventors throughout history used this mentality they would have simply went to Radio Shack to buy blister pack crap and feel sorry for themselves. Short answer, you're on the right track by learning how to build antennas. Since you have the skills you will be able to perfect your station with a little more research and persistence.
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There's definitely nothing wrong with a single licensed user to put up a repeater on each of the repeater channels. Of course, you have to have the resources and sites to support them. Best to cover every available frequency to prevent congestion. Nothing worse than having someone using the repeater when you're ready to pick up the mic.
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Follow the instructions when cutting and your antenna will work perfectly and yield great performance. I have one and it works great. And if you want to gain an extra 2db, polish the brass rods to a mirror finish with Brasso. This is an old RF engineer trick.
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Probably one of the biggest misconception is people assume that just because they go to an "established" brick and mortar car stereo shop they will get a two-way radio installed properly. Do they even have an SWR meter? You'll possibly burn more time and stomach lining dealing with these shops to even get the job remotely done correctly. My suggestion for you is to Google commercial two-way radio installers in your neighborhood. They will probably be more expensive than a car stereo shop, but your chances of getting quality work in a timely fashion is greatly increased. Of course, if you DIY you might find out your install will most likely be better than a stereo shop's.
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Sweet!! Looks like you have some unused real estate that can accommodate 5 more.
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Agree, but this is why I follow up with a nice thin fender washer on the inside of the roof to distribute the force more evenly when the antenna hits something. I never had any bent sheet metal or antennas ripped out of the roof.
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Damn, you made it 6 days without punching a hole in it? That's got to be a new worlds record for having the willpower. You're going to drill, so get it out of your system now.
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LOL! Just a little. But it did show an increase in gain. Was it due to the material or the the way the antenna was constructed. It could have been atmospheric conditions changing in the short time it took me to switch antennas. It was a fun experiment that I did when I was bored. Either way, I didn't notice a decrease in performance that would make me to not want to use it for an antenna. Other than cost, if I had to buy it at retail price, it would make for a decent corrosion resistant material that would be perfect for salt water locations. I'm not sure if I would see any performance difference in a double-blind test.