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kidphc

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kidphc last won the day on May 11

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About kidphc

  • Birthday 04/04/1974

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    Potomac, MD

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  1. If you ever get the want to be able to mount without leaving too much of a trace. I would suggest looking at pro clips. I used one for a while with my HT, I needed somewhere to clip the hand mic to. It now has a magnetic amp pattern mount on it to clip a cellphone to for APRS. https://www.proclipusa.com/product-finder/vehicle
  2. Think I misunderstood your original post. I had always thought that mounting one upside down also accomplished the something. Reading your second post I think we are on the same page. Sent from my SM-G975U using Tapatalk
  3. Don't you get more isolation by mounting it below and to the otherside? Sent from my SM-G975U using Tapatalk
  4. Nmo weren't designed to have the back side exposed to the environment (weather). I searched for a while and found water resistant ones but they aren't much different from the regular one in design. My hood mount bracket, the nmo doesn't seal well on both sides. I ended up pulling the plastic cover back, had to because the center pin broke connection. The manufacturer used hot glue to seal it up. After soldering. I ended up using hot glue to quickly fill the cap on and pressed and clamped till set. I purposely used too much so it oozed out. Then covered the whole backside with water proof rtv silicone. For the topside (way more then I normally use) I used a lot of conductive contact grease. You do not want to use to much or you will short the outer to inner. So some cleaning up is necessary. Sent from my SM-G975U using Tapatalk
  5. So does the Kydera dr-880 uv. 5 watts probably not as effective for crossband repeat but notice the current options are basically Chinese. Any reason an ht and not a mobile unit. Just curious as to the use case. I do have a friend that his house acts like a Faraday cage. So he bought a kenwood 71a to cross band to hit repeaters with his handheld in the house (when cooking during nets). He choose that one because of the autoid function on crossband repeat. Sent from my SM-G975U using Tapatalk
  6. Not many handhelds that I know of with crossband repeat. Almost all the ones that I know of are higher end mobile units not ht. Most of the hams I know will only use it when walking from their truck/car to get some extra range. Say walking down the hill but trying to hit the repeater on the otherside. Personally, I found it tiresome throwing out the call sign with the mention I am cross band repeating and what frequencies. But eh I am lazy. Really only i know of capable is the Yaesu Ft51r. Not sure if even hts with true duplex are capable nowadays. Sent from my SM-G975U using Tapatalk
  7. 77 years young. Got 90 year olds comming in all the time for me to work on their cars. The way they bounce around, they make me feel old and I am only 47. I am going to recommend you find a local ham club. They will help, at a store they are alot of times trying to sell you stuff. Worst with a ham club you can pay some dues make a bunch of friends without ever taking the test. You are going to want to regardless. Hope you have fun where ever you take this hobby. Some of the greatest people I have met. Sent from my SM-G975U using Tapatalk
  8. I hope the can help. Keep in mind many hams are GMRS and cb user. We are constantly trying to convert others into amateur radio. So get use to the question "when are you taking the test?" Sent from my SM-G975U using Tapatalk
  9. Mostly going to be ham stores. Best bet hro, ham radio outlet. It's a franchise so chances a location close by. Many of 70cm 440mHz properties are close to GMRS. There is always us here to try and steer the train wreck. Sent from my SM-G975U using Tapatalk
  10. You logging in with the same login? You might need to contact the admin for help.
  11. It can. I know terrible answer. But no definitives. Sent from my SM-G975U using Tapatalk
  12. Right angle jumpers are serious hit or miss. Especially, the premade ones. Some times they are barely soldered on the center pole. Rf doesn't like right angle bends much either. We use loops and the mid point of the loop for long wire antennas (refer to fold backs). Well guess what you can adjust then fold back lengths to tune antenna. Even with a foot hang off the fold back. So much so that my random wire came with specific instructions to use pulleys to create curves in order to minimize bend radius that will be seen as the electronically the end of the antenna. Sent from my SM-G975U using Tapatalk
  13. I'd leave good enough alone. If it bothers you 213x is a little more flexible. For most of my jumpers the are either rg58 or lmr200. Under a foot not much of a difference. 100 feet yeah, notice losses are by the 100 feet? Sent from my SM-G975U using Tapatalk
  14. Might have been my pics. All equipment grounded to grounding buss. Buss grounded to outside exit point, it hand a ground point why not use it. Outside exit point grounded to grounding rod. Utility box grounded to grounding rod. It is where the poly phasers are located. I try to avoid daisy chaining as much as possible. I also like to keep ground leads as straight and short as possible. Sent from my SM-G975U using Tapatalk
  15. No direct range calculation for wattage. It is just more umph to get through the noise floor. So it will get you some more distance, in perception. If you took all three in an airplane and cranked then at max wattage. All three would get the same distance. But the highest powered one would come in stronger and louder at the edges due to the umph making you heard over the noise floor (if you use squelch, it would open the squelch depending on the setting). Hence, the monitor button on most radios. When search for weak signals you turn off the squelch. Most of the time you can barely get any copy but sometimes, sometimes. Through trees and such yes a little power can help. But trees do a great job of attenuationing vhf/uhf signals. They do an even better job of blocking signals when wet. Also when you double the power you only net 3db worth of signal strength. In theory. The gain of the antenna also will affect what you perceive. The 3db antenna is probably better in hilly terrain. The 3db antenna is more like a sphere in radiation pattern. Where the 6db it is more akin to a platter. That is why you have higher gain. You don't get something for nothing. With a yagi yet get 10-12 db in gain but it is highly direction like a pie wedge. Hope that helps a little. Antenna and radio theory are fun aren't they. That is why you need to experiment. All this is why in Lone Survivor Murph gave his life to try and get as high and as clear as he could. He probably knew he was going to silhouette his entire body to every living thing for miles. In an attempt to get help. Sent from my SM-G975U using Tapatalk
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