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Everything posted by axorlov

  1. You absolutely can use channel 16 for simplex. They do not own the air. If somebody does not need an access to this repeater system he is not required to pay anything.
  2. Starlink is going to help with that. But yes, strange that rangers do not have offline maps. I'd expect them to have a paper topo maps of good quality too. These work when batteries are empty. Could be a dramatization by media.
  3. Your dish mount should be grounded already. But if it is not grounded, you should ground it. Ideally to it's own ground rod with #4 wire (according to the code) or at least to something that's already grounded. That would not be by the code, but it will allow static electricity to discharge through something other than your radio. Static is generated in surprising amounts just from the wind.
  4. axorlov


    Haha, sorry for the off tangent. But that bolded remark is very much needed, and this very thread is a proof of it. We have people here (we will not point fingers) who might go to Starbucks with the shiny macbook in hand and say: "Oh cool! I'll take my first bite at 8am, and then blabber till noon with no mask. Because noon is when I'm taking my next bite".
  5. axorlov


    I say a little different thing. I say that there is no requirement that equipment for different services must be in a different rooms or separated anyhow. You can operate your TK-880-1 under Part 90 license and be station in LMR service, and then operate the same (or another one) TK-880-1 sitting on the same chair under Part 95e license and be a station in GMRS. Equipment itself can be foreign, when it is under jurisdiction of the foreign rules and laws. It is not related to physical separation of stations intended for different services. And regarding buying 3 radios, yes, that's the letter and the spirit of the law. Want to be clean in the eyes of the law, then buy three radios, because the terms of your license require that you operate within the rules. If you think you're above the rules, it's fine with me too, I'm not your mom or your neighbor or cop. Just do not mislead others, like Lscott pointed out above. I'm a little irritated by some people (we will not point fingers here) who suggest that it's perfectly ok to have GMRS<->Amateur communications when it's very clearly not allowed, or use 18W AT779UV on MURS.
  6. axorlov


    There is no requirement that transmitters for different services were in different rooms or vehicles. "Station" is an equipment, not a location.
  7. axorlov


    One fool can ask more questions than one hundred wise can answer, but I'll answer this: Specifically prohibited by 95.1733 (9). And I'm too lazy to look up an identical line in Part 97, but I'm sure it exists. Edit Ah, what the hell, here it is: 97.111 (b) and 97.113 (b)
  8. Emailed you firmware that I use. You should remove your email addr from the post.
  9. There are DTMF mics for Kenwood on ebay from China for around $20. I bought two, one of them quickly stopped working, another one is still good. The genuine Kenwood mic is bigger and heavier, but seems to be more reliable. Programming cheat sheet, meaning buttons on the front panel? We were chatting about possible options in this thread, on the second page: But it's mostly up to the user. Whatever you find good, convenient.
  10. This is what is strange. I have a big zipfile with kenwood firmwares, there is no one with checksum 0ADE. The one I'm using has a checksum E613. Want to try it out?
  11. What about the label on the back of your radio? Does it say "Ver 2.0" like here: If not, you have unversioned, or what is called "Ver 1.0" radio. The latest firmware for Ver 2.0 is E613, that's what I run in my radios. The latest for Ver 1.0 is E4B3. I have both firmwares (although I only have 2.0 radios). If you PM me with your email, I can send them to you. So, if I read you posts correctly, you can upload firmware with FPro when turn on the radio with the SCN down, correct? If yes, your cable and port are fine.
  12. Or, read this: http://w6nbc.com/articles/2016-03QSTdishslot.pdf You would need to do some calculations to adapt the design to the 462MHz. And NanoVNA to properly tune the contraption. I will try this myself one day, too damn clever.
  13. I think this kind of dish will not be an efficient reflector for the GMRS frequency (65cm). Too small for that. Too much trouble with marginal results, in my opinion. I would go with n4gix suggestion and use the angled pipe to mount antenna that does not require ground plane. Something like Browning BR-6140, or Diamond X50 or similar. I experimented myself with that kind of setup, but with 2.5GHz wifi, using USB wifi dongle. It certainly works with shorter wavelength, if you know where the focus point is and how to find direction. And if you do not, glue/tape a bunch of kitchen foil on the dish and use sunlight and a flat piece of cardbooard to find where the focus point is and how to aim the dish. Just be careful doing that. This old star in the sky together with the old dish in your hands will very quickly burn your eyes out if you are not careful.
  14. And one more thing, important one! Disregard posts from idiots.
  15. Start with steps outlined in Service Manual (http://www.repeater-builder.com/kenwood/pdfs/tk-880h-svc-man.pdf), Page 16. Basically, make sure that your COM port number is correct and KPG-49D and radio operate on the same serial port speed. The default should be 57600. Read the posts from WRAK968 in this thread to determine if you need to reflash the firmware. Remember, that firmware for v 1.0 and 2.0 are NOT interchangeable.
  16. One of my TK-880 had a different (non-Kenwood) firmware, and required software called WinSJI to communicate with radio. I also used this software to flash the Kenwood firmware back. Maybe worth investigating. I think you confirmed that your cable is good and your PC is good, by communicating with other 2 radios. Edit: This what I've found: http://www.repeater-builder.com/kenwood/passport2conv.html
  17. That's exactly why SWR meter is not providing any useful info about HT antennas. Measuring SWR of HT antenna is a totally meaningless exercise.
  18. They are more expensive because UHF is more challenging from technical standpoint than 27MHz. There is a thread here where we were discussing getting SWR meter vs NanoVNA. NanoVNA is much more advanced, and costs less than a good SWR meter, but it much less newbie-friendly. SWR meter worth getting (together with quality UHF-capable dummy load!) if you are doing home or car installs. For HTs, you cannot really use SWR meter to obtain meaningful data.
  19. Yep, what Radioguy said. Page 26 in Service Manual. https://www.manualslib.com/manual/779398/Kenwood-Tk-880.html Or send me PM with your email, I can send you manual pdf.
  20. I'd go with Alinco DJ-MD5, that was mentioned above. Being legit (almost, it's Part 90) worth something, no?
  21. On forums some people ask questions to hear the answers, some people ask questions to hear their glorious selves. No difference from the real life.
  22. I have to correct myself, when I said 10 times reduction for RG58U I was thinking of 100 ft length of the cable. Still, 50 ft is nothing to sneeze about. Use LMR-400 if possible. It's a 3/8-inch cable, fairly rigid, and depending on how you're going to pull it, it could be a good thing. So, what everybody said, and the calculator provided by JeepCrawler98 is very useful tool. I totally agree. You're putting up Yagi, means you want to put all power you have in a small sector, so makes sense to not waste this power to heat the cable and surroundings. I, myself, never use RG58U. For car installs, where the cable run is shorter than 10' and I need a thin cable, I tend to use LMR-240. Or RG8X if space is very tight, because it's more robust than LMR type. For home base I'd pull thicker LMR-400. It is a popular cable, available everywhere (I usually buy from DX Engineering, they have 400MAX which is an LMR-400 knock-off with a similar characteristics), connectors for it are no problem, and you can buy correct length with connectors already attached. And if you're a newbie, you should seriously consider getting cable with connectors. Go to reputable vendor (Antenna Farm, DX Engineering, people will share their favorite places), order pre-made assembly with N connectors if the antenna has N connector on it. You can use N-to-PL259 adapter inside home and keep much better weather-proof N connector outside on the antenna.
  23. RG58U is a wrong cable to use for 50' length. You reduce power of your signal 10 times. Use LMR-400. Coax attenuation chart: https://www.w4rp.com/ref/coax.html If you have to have thin cable, at least opt for LMR-240 or RG8X.
  24. I'm far from Lane A and Line C, but my take on it, if license states the restriction, and this restriction was never specifically rescinded, it is still active. Just two channels lost, should be no biggie. Line A, B, C detailed description (you're likely aware of it): https://www.fcc.gov/engineering-technology/electromagnetic-compatibility-division/frequency-coordination-canada-below For GMRS, my license updated in 2020 still states the restrictions: no transmission on 462.650, 462.700, 467.650, 467.700. There is no mentioning about this restriction in Part 95. For ham, no transmission in 420-430MHz segment, 97.303(m): https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D/part-97#p-97.303(m)
  25. There are tones that are susceptible to external interference. The 136.5 is one to avoid. The radio that sends DCS does it at 134.4 baud, and if you have nearby repeater or radio using DSC (no matter which one), your radio may mistakenly think it's 136.5 it's hearing. 110.9 is little too far from the second harmonic of 60Hz, but who knows, tone decoder on your radio may not be tuned properly. There is a thread here, comment from n1das explains it well:
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